2018 to see Third Consecutive Mass Coral Bleaching Event for the Great Barrier Reef?

One point two degrees Celsius hotter than average (1.2 C). That’s the temperature threshold where 50 percent of the world’s corals are likely to die off according to a scientific study written in Nature during 2013.

The El Nino year 2016 was about 1.2 C hotter than 1880s averages. Meanwhile 2017 was about 1.1 C warmer than normal despite a shift toward La Nina.

We are thus entering a very harmful period for the world’s corals. One in which corals are bleaching and dying off at unprecedented rates. The global bleaching event of 2014 through 2017 was the longest lasting and most damaging in the historical record. Many reefs around the world suffered severe losses. Reefs that had never bleached before experienced bleaching and mortality. And this event included severe damage to the majestic Great Barrier Reef of Australia.

Bleached Staghorn corals on Keppel Island Reef during 2016 event that impacted 93 percent of the Great Barrier Reef. Image source: UNESCO.

Unfortunately, despite an official end to the 2014 to 2017 global bleaching event, ocean temperatures across widespread regions remain at thresholds that are likely to result in stress to corals. And it is arguable that if bleaching were so widespread as it is now in past decades, then the present 2018 period would still be considered a global bleaching event.

Regardless of how we parse official declarations, reef systems are obviously still under stress. Just this past week, reports were coming in that sections of the Great Barrier Reef were bleaching for the third year in a row. The bleaching was rather widespread for this time of year. It was occurring earlier than normal — generating concern that 2018 bleaching could be worse than expected come February and March. It was hoped that the large reef system would be given a bit of respite from the heat. But now that particular hope is in doubt.

Corals around the world are still under threat from extreme ocean heat despite the fact that the 2014-2017 global coral bleaching event was officially ended during summer of 2017. Image source: NOAA.

Corals are one of the many canaries in the climate change coal mine. These organisms are a vital aspect of global ocean health and the reefs they build are the present home for upwards of 2 million species. Humans depend on corals for the food chains they support and for the natural beauty they provide. And a global ocean with less corals provides both less food and support for human beings and for ocean life as a whole.

Because corals are so sensitive to temperature change, it is expected that about 90 percent of the world’s corals will be lost if the Earth warms by 1.5 C. Meanwhile, virtually all of the corals (more than 95 percent) could be gone if the world warms by 2 C. With global temperatures at around the 1.1 C threshold and rising, we are in the danger range for corals at this time. And the world stands at the brink of losing the majority of this vital species with the potential to see 90 percent or more of the world’s corals lost over the next 3 decades under various scenarios in which fossil fuel burning continues.

Warmer than normal sea surface temperatures are again threatening Australia’s Great Barrier Reef (GBR). Jan 15, 2018 sea surface temperature anomaly image provided by Earth Nullschool.

Danger to corals is, today, a very immediate issue. And we are in the period of risk and damage now. This reality is highlighted by the fact that what should be a relative respite period for corals is still seeing abnormally high levels of bleaching.

During 2018, La Nina in the Eastern Pacific has generated relatively cooler surface waters in a number of locations. And we would normally expect La Nina to beat back global coral bleaching severity. However, an anomalous hot blob of ocean water between Australia and New Zealand is causing an unusual spike in ocean temperatures for the zone east of Australia (see image above). The result is that the GBR is again at risk.

Early bleaching for the Great Barrier Reef in 2018 is definitely a bad sign. However, scientists aren’t yet stating that this year will see bleaching intensity hitting levels similar to 2016 and 2017. Let’s hope that remains the case. But so long as fossil fuel burning and related warming continues, the road ahead for corals is one of existential crisis.


2017 — Second Hottest Year on Record as Climate Troubles Escalate

The world continues to warm. In the geological context, it is warming very rapidly. Likely more rapidly than at any time in at least the past 200 million years. And as long as this very swift warming trend continues, as long as it is not bent back, it spells serious trouble for the world’s weather, for stable coastlines, for corals, for ocean health, for stable growing seasons and for so, so many more things that we all depend on.

2017 was the second hottest year in the global climate record. It was notable due to the fact that it followed the strong El Nino year of 2016 with ENSO neutral trending toward La Nina conditions. The short term conditions that emerged during 2017 would tend to variably cool the Earth. But the resulting cool-down from 2016 to 2017 was marginal at best — representing about half the counter-trend drop-off following the strong 1998 El Nino. Instead, much warmer than normal polar zones kept the world in record hot ranges even as the Equator tried, but failed, to significantly cool.

(Rate of global warming since the 2010s appears to have accelerated in the above graph following a strong El Nino during 2015-2016 and a very mild counter-trend cooling during 2017. Temperatures in 2018 are likely to be similar to those seen during 2017 if the present prediction for ENSO-Neutral conditions is born out. Image source: NASA.)

Overall, warming above historical baselines remains quite acute in the NASA graph. And global temperatures for 2017 were 1.12 C warmer than 1880s averages. This is comparable to the 1 to 2 C warmer than Holocene range last seen during the Eemian — when oceans were about 20 to 30 feet higher than they were during the 20th Century.

Present rate of warming appears to be at the higher end of the observed 0.15 to 0.20 C warming per decade increase since the mid 1970s. This rate of warming is approximately 30 to 50 times faster than the warming that ended the last ice age. During that time, it took ten thousand years for the Earth to warm by about 4 degrees Celsius. Now we are at risk of seeing a similar warming within 1 to 2 Centuries or less if a switch back to business as usual fossil fuel burning occurs.

(This is what a world featuring temperatures hotter than 1 C above late 19th Century averages looks like. All-in-all not a very cool place. If present levels of atmospheric greenhouse gasses simply remain and do not rise, we are likely to see 2 to 3 times this level of warming long-term and over the course of multiple centuries. Present policy pathways for additional greenhouse gas emissions will likely achieve 2-3 C warming or more by the end of this Century unless more rapid energy transitions, carbon emission curtailment, and atmospheric carbon capture are undertaken. Image source: NASA.)

NASA and other top scientific agencies point toward human CO2 and other greenhouse gas emissions as the primary cause of present warming and a related growing disruption to the Earth’s climate system. Action to switch energy systems away from fossil fuels and to, as a follow-on, draw down a portion of that climate warming CO2 now in the atmosphere is presently necessary to prevent ratcheting levels of harm and disruption on local, regional and global scales.

Though mild compared to the potential impacts of future human-forced warming, present warming and presently elevated CO2 levels in the range of 407 ppm and 492 ppm CO2e are enough to generate climate disruptions of serious consequence over the short, medium and long term that negatively impact the health of human civilizations and the natural world. Meanwhile, continued fossil fuel burning and related dumping of carbon into the atmosphere is increasing the risk of catastrophic events and related mass loss of human shelter, forests, fertile growing zones, and earth system life support services. The need for response and a rapid energy transition to renewables is therefore both considerable and growing.

Toasted — California’s 2017 Foreshadowing of the Monster Fires to Come

Part One: The Story of How Global Warming Turned California into Toast.

The Thomas Fire as seen by a webcam located atop Santa Ynez Peak, a 4300′ mountain 17 miles northwest of downtown Santa Barbara on December 10th.


I want you to indulge me for a minute. I want you to put on your scientist hats with me and engage in a bit of an experiment.

Take a bagel. Cut it in half. Dip about 1/3 of it in water for a couple of seconds. Then put the bagel in the toaster oven for about 5-10 minutes. Remove and see the results.

What you’ll find is that the part of the bagel that hasn’t been dipped in water is, well, toast. The dipped part — significantly less so. If you continued to toast the bagel, eventually the heat from the oven will cause the undipped side to burn. Take even more time and the heat would overcome the moisture on the dipped side and cause it to burn as well.

Here was the result of my at-home experiment after about 10 minutes in the oven at 425 degrees. Can you guess which half was dipped in water?

The more heat, the faster both sides of the bagel burn. But the drier side always first. The wetter side always second.

It’s a simple fact that moisture — whether loaded into bagels or soaking into vegetation and the ground — adds more resiliency and resistance to fire. And this year, given the massive amount of moisture that fell across all of California during the winter and spring of 2016-2017 we didn’t really expect summer and fall to be all that bad of a fire season.

That famous Pineapple Express kept delivering storm after storm after storm. Dams were strained to bursting and over-spill. Roads were washed out. Water rescues were performed. And when all was said and done, California had experienced its wettest water-year in all of the last 122. Given such an obscene amount of water flooding the state, we certainly didn’t expect what happened next. All that moisture soaking into lands, soils, trees, vegetation told us a story. It told us a story that we thought we knew.

Accuweather’s California flood forecast from January 9, 2017 is easy to forget given the record fires we see today. But the temperature and moisture extremes experienced are an aspect of a warming climate. These floods inflicted more than 1.5 billion in damages. Source: Accuweather/Wikipedia.

What we didn’t count on was the oven-like heat that followed. Nor the simple fact that resiliency, no matter how strong at first, is not limitless.

Environmentally speaking, heat is the primary factor in fire hazard so long as fuels are present. Drought is also a factor, though a somewhat less certain one because eventually most fuels are consumed if drought sets in for long enough. As with the bagel, enough heat will eventually blast through any moisture loading so long as that moisture is not recharged to great risk of consuming and conflagrating the fuels that soaked up the moisture in the first place.

At its most basic level, this is why global warming promotes fire hazard. If you bake the forests, grasses and shrubs enough, they will burn.

If there is one thing we know about climate change and weather it is that it promotes extremes. Particularly extreme swings between cooler+wet and record hot+dry as the water cycle is thrown through the atmospheric equivalent of a hyperloop. And the level of extremity California experienced from winter to summer ran a six month race from wettest to hottest. For following the early year deluge, 2017 rapidly rocketed into the hottest summer in California history. Temperatures in many places regularly soared to well above the scorching 100 degree mark. Records for all-time hottest days fell like trees before the wild hurricane.

Large sections of the west, including California, experienced their hottest summer on record. Image source: NOAA.

And given so much excessive heat, it didn’t take long for the fires to arise even following a record wet winter.

We won’t go through all the exhaustive numbers of that grim tally of burning. But we will say that more than ten thousand homes and buildings burned. That many souls perished in the blazes. That billions in damages were inflicted. At times, ash and embers rained down across California as if from a volcanic eruption. The skies — marred by great pillars of smoke erupting from a blasted Earth. To say it was merely the worst fire year California has ever experienced would be to do the nightmare of it all an illiterate, unfeeling, lack-compassion injustice.

The summer fires that came with the heat burned mostly the north. The rains, that were so strong in winter took a bad turn once the heat blazed through the lands enough to dry out all that new forest and grass regrowth. Here we were witnessing, before our very eyes, the kind of new conditions 1.1 degrees Celsius worth of global warming was capable of producing.

Firefighter battling the Thomas Fire, which is just 500 acres away from being the largest in California history. Image source: Campus Safety.

Because of that warming, we know now that fire season never really ends any more in California. A point that was driven viciously home as summer proceeded into fall and the fires still raged in October. By December, the heat and dryness had not relented. Not enough at least. The normally wet month had been transformed. And the carry over of that damage done by the furnaces of summer had prepped the land for more burning.

Howling winds from the longest burst of fire fanning winds ever seen for California fed into a new fire. A fire that is now within 500 acres of becoming the largest fire ever to burn in California history. In December. During what should be a wet, cool month. But one that is hotter and drier and fire blasted.


But if we don’t turn back from the warming that caused this, the worst is yet to come.


Hat tip to Wharf Rat

November of 2017 was the Third Hottest on Record Despite La Nina

According to NASA GISS, November of 2017 was the third hottest such month in the 137 year global climate record. This continues a trend of warming that began with fossil fuel burning at the start of the Industrial Revolution and that has recently hit new intensity during the 2014 – 2017 period.

NASA warming trend growing more extreme

(NASA color coded warming trend since 1901. Note the very extreme departures in the recent period since 2014. Image source: NASA GISS.)

Counting in November, 2017 is now solidly on track to be the second hottest year in the global climate record — trailing 2016 and edging out 2015. This new record was achieved despite the fact that La Nina emerged later in the year.

La Nina is a periodic cooling of Equatorial Pacific surface waters that also has a cooling influence over the Earth’s atmosphere when it emerges. The fact that we are on track to be experiencing the second hottest year on record, despite La Nina the cooling influence of La Nina which has been largely over-ridden, should be setting off at least a few warning lights.

Overall, temperatures for November were 0.87 C warmer than NASA’s 20th Century baseline and 1.09 C warmer than 1880s averages. Taking into account temperatures during early to middle December — which show a continuation of November ranges — it is likely that 2017 overall will average around 1.1 C warmer than 1880s averages once all the tallies are counted. Edging out 2015 by 0.01 to 0.03 C (see Dr Gavin Schmidt’s graph above).

By contrast, 2015 was a year in which the Pacific was ramping up toward a strong El Nino. So the La Nina signal for 2017 is important by comparison — validating numerous observations from climate scientists and climate observers that global temperatures have taken another step up (one of many due to human based heat forcing, primarily due to fossil fuel burning) without any indication of a step down.

(November 2017 sea surface temperature [SST] anomaly map at top shows evident La Nina pattern over the Equatorial Pacific. This should be creating a relative cooling signal. November 2015 SST anomaly map shows build up to El Nino type conditions. The fact that we will likely experience a warmer year in 2017 than in 2015 despite this contrast is a notable indicator for human-forced climate change and a continuing warming trend. Image source: NOAA.)

Regional analysis for November (see NASA map below) shows a very strong polar amplification signal with the highest Latitudes in the Northern Hemisphere displaying the most extreme temperature departures. Latitude 80-90 N showed the greatest zonal anomaly at around 5.5 C above average. While the global hot spot in NE Siberia hit an amazing 9.3 C above average for the month. Polar amplification was also more evident over Antarctica during the month with temperatures ranging from 1.5 to 2 C above average in the region of 75 to 80 S Latitude. This was significant given the fact that anomalous polar warming relative to past temperature trends tends to take a step back during late spring and summer months (it was late austral spring in November).

(Global anomalies map shows very extreme polar warming during November of 2017 with few regions of the globe experiencing below average temperatures. Image source: NASA GISS.)

It is worth noting that very few regions experienced temperatures below NASA’s 20th Century baseline. That regions experiencing temperatures below 1880s averages were even more scarce. And that the global cool spot at 4.1 C below average was less than half the amplitude of the most extreme warm departure (9.3 C).

The last time temperatures were globally below average during any month was in 1985. Which means that if you’re younger than 32, you’ve never experienced a below average month globally. Presently temperatures are so extreme now that globally below average single days are almost entirely a thing of the past. Warming has thus thrust us well outside the typical range of variability. And as a result, we are experiencing temperature, rainfall, fire, drought, snow, sea level, and storm conditions that are increasingly outside the norm, that are increasingly difficult to manage and adapt to. A trend that will continue so long as we keep burning fossil fuels. So long as the Earth keeps warming.

Record Renewables Growth in 2017 as New Global Solar + Wind Installations are Projected to Hit Near 175 GW 

Last year, global growth in new solar energy installations hit a new record of 56 gigawatts (GW) in a single year. This year, growth could nearly double to 108 GW installed according to recent reports from IHS. Meanwhile wind appears on track to add another 68 GW of clean power generation. In other words, the age of the renewable energy revolution is in the process of overtaking us. None too soon considering the fact that we are now facing serious ramping harms due to fossil fuel burning and related human-forced climate change.

Rocketing Global Growth For Solar Despite Trump/Republican Efforts to Throw a Wet Blanket on a Key Industry

Such amazing growth comes on the back of rapidly ramping solar markets in China, India and around the world. A ramp that’s happening despite anti-solar policy by the Trump Administration feeding a trade case that has injected uncertainty and distortion into the U.S. market. And even as the same Administration is waging an Orwellian-styled war on the employees of the Environmental Protection Agency who are still doing their best, despite rising odds, to protect the health of U.S. citizens from polluting industries.

The upshot is that the U.S. will lag behind these two emerging solar energy leaders as republicans in power put energy policy in retrograde following years of rapid advancement and clean energy leadership under Obama and the democrats.

(U.S. sees shrinking pie of new solar additions under Trump. Image source: PV Magazine/IHS.)

But despite harmful policy stances by republicans and related nonsensical litigation, the U.S. market is still expected to see 10-12 GW of new solar added in 2017 — or the second highest levels of solar installation on record.

Solar’s resilience in both the U.S. and around the world is primarily due to low photovoltaic panel prices combined with broad popular support by states, cities, businesses, and individuals. These low prices are evidenced by numerous solar tenders and purchase agreements that now range below the 5.5 cent per kilowatt hour level, that can often hit below the 4 cent threshold and sometimes dip as low as 3 cents or less. A recent solar purchase agreement in Arizona, for example, sold for less than 3 cents per kilowatt hour or lower than half the price of nuclear for that region. As mentioned above, trade case uncertainty has since driven solar prices in the U.S. marginally higher. Despite this counter to the global trend, U.S. solar sales are still beating out every prior year except 2016.

(Policies like the Sun Shot Initiative under President Obama and major investments by countries like China helped to rapidly reduce the cost of photovoltaic solar panels globally. Recently, major cost reductions have also been realized in concentrated solar power (CSP). Image source: PlanetSave.)

Concentrated solar power (CSP), which has the inherent advantage of offering both clean, renewable energy and storage in a single application, is also seeing falling prices. For ACWA Power is building a 700 MW CSP facility in Dubai that will provide clean solar energy for just 7.3 cents per kwh. This compares to natural gas prices which range as high as 24 cents per kwh for the Gulf region. If such low prices can be widely duplicated globally, CSP, which employs reflectors to gather solar heat into an oil based medium that is used to boil water to spin a turbine, then this additional form of solar is also likely to see broader use.

Wind Continues Steady Gains

Even as solar energy rockets to record gains, wind energy is also expected to see considerable increases. Forecast International now predicts that 68 GW of new wind capacity will be added globally in 2017. Wind installations at this point are quite widely distributed around the world. However, increased growth in Asia is a major factor in the continued steadily rising rate of adoption.

(Globally, wind energy is projected to continue its steady growth trend of recent years. Image source: Forecast International.)

Prices for wind energy range from 3.1 to around 5.5 cents per kwh, according to Lazard. Unlike solar, the price for wind has been on a slower decline curve during recent years. This means that at this time prices for both wind and solar are presently comparable for most regions. It also means that in places like Alberta, where a recent 600 MW wind project is expected to cost an average of 3.7 cents per kwh, prices for wind are less than half that of nuclear and less than most existing coal or even many new gas projects.

Major Growth in Renewable Energy as Coal Stagnates

If IHS and Forecast International projections for new solar and wind growth bear out, then we’ll see about 176 GW of these forms of renewable energy installed in 2017. That’s a tremendous rate of add that will considerably outpace new coal and gas installations even as it helps to reduce overall demand for power from these polluting sources and major contributors to climate change, related sea level rise, and similarly related worsening extreme weather. We are already seeing these effects as the world’s largest coal terminal is seeking to diversify on lowering demand forecast and as GE — a major provider of turbines for the gas industry — is cutting its fossil fuel based equipment sector.

One major aspect of the larger global shift can be seen in China. During past years, China rapidly added new coal and gas capacity. But non fossil fuel power generation additions were the major story for China in the first half of 2017. For by July China had added 24.4 GW of new solar capacity, 7.3 GW of new wind capacity, 6.69 GW of new hydro capacity, and 1.09 GW of new nuclear capacity. The total new add was 39.48 GW of non fossil fuel based electrical power generation vs 18.84 GW of new thermal capacity primarily coming from coal and gas. In other words, renewables outpaced fossil fuel generation in China by more than 2 to 1.

This comes as China is seeking to reduce coal use in an effort to clean up its air quality and fight climate change, as the price of coal burning rises to the point of producing losses in regions like Europe, and as predictions abound that the near term coal market is stagnating and long term future coal prospects, without the addition of costly carbon capture and storage, look bleak.


Hat tip to Greg

Hat tip to Vic

Hat tip to Suzanne

Worsening Weather to Feed Monstrous Thomas Fire Through Sunday

It shouldn’t be happening in typically wetter, cooler December. But, due to human-forced climate change, it is.

The Thomas Fire, at 242,000 acres, is now the fourth largest fire in California history. Alone, it has destroyed 900 structures — a decent town’s worth gone up in smoke. And today it threatens pretty much all of Santa Barbara’s 62,000 buildings. For future days promise conditions that could expand the monstrous blaze into the largest fire ever seen for the state.

(Persistent western ridge formation is an expected upshot of sea ice retreat in the Arctic. A feature that will result in a drier, warmer, more fire prone California if the trend toward sea ice melt and global warming continues.)

Firefighters battling the blaze have faced insane odds to manage a herculean feat — achieving 35 percent containment as blowtorch like Santa Ana winds consistently billowed through the region over the past two weeks. These winds have been both abnormally strong and persistent. And they’re run over dry lands through a season that is typically known for its more prevalent rainfall — not the expanding drought we see today.

Given these presently very abnormal conditions, fire officials don’t expect to achieve full 100 percent containment for three more weeks. And that’s with over 8,144 firefighters on the ground assisted by 1,004 fire engines and 27 helicopters.

(The 2012 to 2017 California drought was slaked by rains last winter. However, it appears to have returned in force with southern portions of the state again facing an extended dry period.)

Present weather conditions for California are extraordinary. A persistent ridge of high pressure has hovered over the region. And this high has helped to spike local temperatures, speed a re-emergence of drought, and drive very powerful Santa Ana winds through the region. The high formed as sea ice advance in the Chukchi and Bering Seas far to the north lagged. Open water that is usually ice covered at this time of year radiated more heat into the local atmosphere — providing a slot of warmer air that assisted this drought, heat, and wind-promoting high pressure ridge in forming.

The intensity of these highs, influenced by climate change, out west has consistently risen into the 1040+ hPa range. Highs that have been juxtapposed by a strong low further south near Mexico. And a steep pressure gradient between these two persistent weather systems has helped to drive the very strong, fire-fanning, Santa Ana winds through the region. As the Thomas Fire blossomed last week, fire conditions achieved extremes never before seen in state history as those hot, dry winds roared over hills and through valleys.

(GFS model runs show the fire fanning Santa Ana winds strengthening through Sunday. Hat tip to Dan Leonard.)

Unfortunately, weather models for the next few days show this Santa Ana wind producing pressure gradient either persisting or strengthening. Today, this gradient is producing winds with gusts of up to 55 mph. By Sunday, the high over the Pacific is predicted to face off against a low over Northwestern Mexico. And the gradient between these two systems may further intensify these fire fanning winds. Wind speed and fire hazard are not expected to be as extreme as last week. But the re-intensifying winds will do firefighters no favors.

In addition, and perhaps more importantly to the long range picture, there is not even a hint of rain in the forecast through at least the next week. Dry, warmer than normal weather is expected to remain in place at least through that period. And hope for wetter, cooler weather has only begun to emerge in the longer range, less certain forecast.

New Science Confirms that Harvey’s Record Rains Were Made Much Worse by Climate Change

Hurricane Harvey barreled into Texas on August 25th of 2017. Over the next six days, it dumped 52 inches of rain across parts of the state, resulted in 800,000 emergency calls for help, caused 80 souls to be lost, and inflicted over 190 billion dollars in damages.

Harvey was the most damaging storm ever to strike the U.S. It was more costly than Katrina and Sandy combined. And recent studies now show that this damage, in large part, was due to climate change’s influence over the storm.

(Harvey just prior to making landfall on the Southeast coast of Texas. Image source: NASA.)

According to base climatology, we can expect this kind of event to occur once every 9,000 years. But living in base climatology we are not. Due to fossil fuel burning, atmospheric CO2 levels are above 405 parts per million — levels not seen in at least the past 2.5 million years. Meanwhile, total greenhouse gas forcing (after you add in methane and other heat trapping gasses) is at levels not seen in around 15 million years. So we’re now in a world that’s pretty different from what we are used to. A more dangerous world.

How different and how much more dangerous is a measure of some debate. More to the point, the question of how much the presently serious alteration to the world’s climate impacts the world’s weather is a pretty hot topic. What we already know is that the weather is becoming more extreme, more damaging, and that the most intense storms and droughts are growing worse.

(Incidence of record breaking daily rainfall events are increasing as the Earth warms. New science is starting to attribute aspects of individual extreme events to human caused climate change. Image source: Increased Record Breaking Daily Rainfall Events Under Global Warming.)

But boiling it all down to a single storm like Harvey, how much can you blame on climate change? Well, that’s starting to become clearer thanks to a pair of new scientific studies.

According to a recent study in the Geophysical Research Letters, human-caused climate change increased Harvey’s devastating rainfall intensity by at least 19 percent and likely by around 38 percent. Enough of a human caused influence to tip the scales between a relatively rough event and an epic deluge for the history books. Meanwhile, another study led by World Weather Attribution, found that Harvey was also three times more likely to have formed in the present human-altered climate.

If these peer-reviewed studies are correct, their findings point toward a rather stunning conclusion — the storm was much more likely to form due to climate change and the storm was made much more intense after it formed due to climate change.

In essence, the new science finds that climate change’s finger prints are all over Harvey’s devastating impact. Folks around the world take note. Your severe weather has been hyper-charged.


Hat tip to Eleggua

NOAA’s 2017 Arctic Report Card Shows Transition Toward Not-Normal Polar Environment Continues

The Arctic shows no sign of returning to the reliably frozen region of recent past decades. — NOAA

Reading this [Arctic Report Card], I feel physically sick. I feel so anxious. I’m not sure how many more years or months I’m going to be able to work daily on climate change. — Eric Holthaus


During 2017, the Arctic experienced much warmer than normal winter and fall temperatures. Meanwhile, according to NOAA’s 2017 Arctic Report Card, somewhat cool late spring and early summer temperatures did little to abate a larger ongoing warming trend.

NOAA notes:

The average surface air temperature for the year ending September 2017 is the 2nd warmest since 1900; however, cooler spring and summer temperatures contributed to a rebound in snow cover in the Eurasian Arctic, slower summer sea ice loss, and below-average melt extent for the Greenland ice sheet.

(NOAA’s Arctic Report Card shows a Polar environment experiencing serious and harmful changes.)

This warming trend was evidenced by continued systemic long term sea ice losses with NOAA stating that sea ice cover has continued to thin even as older, thicker ice comprised only 21 percent of Arctic Ocean coverage compared to 45 percent during 1985.  NOAA noted very slow Chukchi and Barents sea ice re-freeze during fall of 2017 — which was a feature of much warmer than typical sea surface temperatures during late August. Temperatures which ranged up to 4 C above average for this time of year and that created a kind of heat barrier to typical fall ice cover expansion.

Sea ice is a primary indicator of Arctic health. But losses over recent decades have been quite precipitious as indicated by the graph below:

Sea Ice Coverage Loss

(Arctic sea ice loss since 1978 during September [red] and March [black]. Image source: NOAA.)

NOAA also found evidence of ongoing increases in ocean productivity in the far north — which tends to be triggered by increasing temperature and rising ocean carbon uptake (also a driver of acidification).

Other observations of systemic warming came as permafrost temperatures hit record levels during 2016.  Decadal rates of permafrost warming as measured at Dead Horse along the North Slope of Alaska proceeded at a rate of 0.21 to 0.66 degrees Celsius every ten years.

(Changes in Arctic ground temperature [20 meter depth] at varying locations shows widespread movement toward permafrost thaw. Image source: NOAA.)

Tundra greening trends also continued over broad regions:

Long-term trends (1982-2016) show greening on the North Slope of Alaska, the southern Canadian tundra, and in the central Siberian tundra; tundra browning is found in western Alaska (Yukon-Kuskokwim Delta), the higher-Arctic Canadian Archipelago, and western Siberian tundra.

Rapid warming of the Arctic, loss of sea ice, permafrost thaw, greening tundra, changes in ocean productivity and other factors are all starting to seriously impact the people of the Arctic. Coastal towns have been forced to move inland due to erosion and sea level rise. And a number of communities have lost access to key food sources due to sea ice loss or migration of local species away from warming regions. Subsidence has generated harmful impacts to infrastructure. Meanwhile, the increased incidence of Arctic wildfires presents a rising hazard to Northern Communities:

High latitude fire regimes appear to be responding rapidly to environmental changes associated with a warming climate; although highly variable, area burned has increased over the past several decades in much of Boreal North America. Most acreage burned in high latitude systems occurs during sporadic periods when lightning ignitions coincide with warm and dry weather that cures vegetation and elevates fire danger. Under a range of climate change scenarios, analyses using multiple approaches project significant increases (up to four-fold) in area burned in high latitude ecosystems by the end of the 21st century.

Taken together this is tough news — a technical report written in the lingo of science but that, in broad brush, describes evidence of a world fundamentally changed. For those of us with sensitive hearts, it’s a rough thing to write about:

Overall, NOAA calls for increased efforts to adapt to climate change in the far north. In addition, the need for mitigating harms from climate change by speeding a transfer to renewable energy could help to preserve cryosystems and ecosystems that are now under increasingly severe threat.

Record Warmth Blankets Alberta

Extreme warmth associated with a powerful western high pressure ridge and conditions related to climate change has broken temperature records across Western Canada during recent days.

On December 9, the southern Alberta cities of Lethbridge and Grand Prairie saw temperatures rising to record highs of 14 C or 57 degrees Fahrenheit. Meanwhile, Calgary experienced 15.4 C temperatures (60 degrees F) — which shattered the previous record of 14.4 C that had stood for 127 years. Four other cities in southern Alberta also saw record warm temperatures on Saturday.

For context, temperatures for this region typically range between -1 to -13 C this time of year.

(The first 11 days of December show far above average temperatures for most of Western North America and the Arctic. Image source: Global and Regional Climate Anomalies.)

The primary feature driving such extreme temperatures is a power high pressure ridge that has been anchored in place during November and December. The ridge has been drawing warm air north and generating unusually warm weather for regions from the U.S. West through central and western Canada and on up into the Northwest Territories and Alaska.

Very slow reformation of sea ice in the Chukchi and Bering Seas is a likely contributing factor to the ridge. A physical feature associated with human-caused climate change. La Nina is likely also enabling the synoptic transfer of heat into both the Arctic and the North American West through a very pronounced Rossby type wave pattern in the Jet Stream. But present Arctic warmth in the range of 3-5 C above climatological averages is well beyond 20th Century norms during La Nina years. It is instead primarily an upshot of polar amplification — where human-forced warming due to greenhouse gas emissions generates more warming at the poles than in the lower latitudes. So climate change related factors are also influencing this overall warmer than normal pattern.

(Above freezing temperatures aren’t typical for Alberta this time of year. But the region was blanketed by 40-60 degree [F] highs on Saturday. That’s 9 to 27 degrees [F] above average. Image source: Earth Nullschool.)

As a result, places like Calgary haven’t received any snowfall so far this year during December. A situation that is likely to continue for at least the next five days as warmer than normal conditions are expected to persist.

December is typically a rather snowy month for Calgary — receiving 8 days of snow during a normal year. But this year isn’t really that normal and the climate, with global temperatures exceeding 1 C above 1880s averages, isn’t normal anymore either.


Hat tip to Dobby

Southern California Fires Expand to Over 255,000 Acres as Conditions Worsen

On Sunday, driven by above normal temperatures and fanned by warm winds, the Thomas Fire in Ventura County, California rapidly expanded. This resulted in a loss of containment as the blaze jumped fire breaks — placing parts of Santa Barbara under seige.

(Smoke plumes from the Thomas fire as seen by a webcam located atop Santa Ynez Peak, a 4300′ mountain 17 miles northwest of downtown Santa Barbara.)

This single fire, as of Monday morning, covered 230,000 acres. At that time, it was the fifth largest fire in California history. It was burning in December. And, at the time, the fire was continuing to swiftly grow.

Five other fires burning in Southern California together cover an additional 25,000+ acres. As a result, approximately 255,000 acres are now burning in this region of the state.

The 6,000 firefighters now engaged in battling these blazes had hoped that predicted milder Santa Ana winds would afford them a chance to gain an advantage over these fires this weekend. But this didn’t happen. The western high pressure ridge strengthened. Local temperatures increased to well above the seasonal average. And though winds subsided somewhat, very dry conditions dominated.

Due to the worsening situation, 25,000 structures are now threatened by the fires — up from 20,000 earlier this week. More than 790 structures have been burned or destroyed. More than 95,000 people remain under evacuation orders. And more than 85,000 people are without power. Tragically, the fires have now claimed their first human life as well.

Unfortunately, warmer than normal, dry and windy conditions are expected to continue through at least Friday, December 15th. Resulting in a long running period of heightened fire danger. These climate change related features are driven by a very persistent high pressure ridge over the North American west. A feature that has been linked to loss of sea ice and a warming Arctic in some climate studies.

Overall, climate change is worsening fire danger out west. During summer, hotter and drier conditions are intensifying the California fire season. And during fall through winter, the climate change associated warming, drying and strengthening of the Santa Ana winds is enabling the eruption of very large city-threatening fires during the winter months.



Hat tip to Colorado Bob

Hat tip to Eric Holthaus

Hat tip to Wili

Hat tip to Titania Baildon

Rise of the Fimbul Fires: Climate Change Enhanced Jets of Flame Rage Across Southern California

Some say the world will end in fire. Some say in ice. From what I’ve tasted of desire. I hold with those who favor fire… — Robert Frost

I am Lorn Sparkfell, guardian of First Frost, without which the world will burn. — Luthiel’s Song, The Death of Winter


Fimbul is an old icelandic word for mighty, giant, great. It is an archaic word that has fallen out of modern use. But considering the fact that the fires now ripping through Southern California are both out of the context of recent milder climates and have explosively expanded to gigantic proportion, it is perhaps time that we should re-introduce the term.

(Photograph of Southern California Fires taken from the International Space Station on December 7 of 2017.)

Sections of Southern California are now experiencing never-before-seen levels of fire hazard as winds gusting to near 80 mph across the region are fanning five out of control blazes. The fires are burning during what should be the cooler month of December. But cool conditions have eluded that part of the state. And the blow-torch like Santa Ana winds that are fanning the flames are being enhanced by conditions consistent with human-caused climate change.

Today, the fire index for Southern California is 296. The threshold for an extreme fire index is 165. And 296 is the highest fire index So Cal has ever experienced according to local firefighters. Fire index is a measure of fire risk. So, if these reports are correct, this region has never seen fire danger hit such an extreme intensity.

(Hurricane Force Winds Fuel Massive Wildfires in Southern California from ClimateState.)

Five fires now burning across Southern California have consumed upwards of 120,000 acres — or a region larger than Atlanta. The Thomas Fire in Ventura County is the largest at approximately 96,000 acres. The Rye Fire, Creek Fire, and Skirball fire all continue to burn. And a new fire — the Horizon Fire in Malibu — has recently ignited. None of these fires are more than 15 percent contained. So all are effectively still out of control.

In total, approximately 20,000 buildings are threatened by fire with more than 300 homes and businesses burned already. 200,000 people are under evacuation orders — enough to fill a relatively large city. Thankfully, there have been no reports of loss of human life so far. But animals, including these horses, haven’t been so lucky.

(Average temperatures across the U.S. West were around 4 C above normal for the entire past 30 day period. This is not at all typical. Image source: Global and Regional Climate Anomalies.)

Climate change skeptics and deniers will try to say that such events are normal for California. That fires always happen. That weather is variable. And tell you five or six or seven other kinds of hogwash.

But the fact is that these conditions are not normal. That California has just experienced its worst fire year on record. That the incidence of large fires in the West has risen fourfold since the mid 1980s. And that report after report after report are linking presently worsening fire conditions in the region to climate change.

Other politically motivated individuals will tell you that now is not the time to discuss climate change — by stating that responding to the disaster itself is more important that examining causes. This is also a red herring — as any effective disaster response will include a responsible review of causes.

To this point, if we are to be effective in both responding to this disaster and in reducing future harm, we should look seriously at the underlying causes that are making fires in places like California worse. And if we are exploring why these Fimbul Fires are happening now, then the big issue is climate change — writ large.


Hat tip to Colorado Bob

Hat tip to Andy in San Diego

Hat tip to ClimateState

U.S. Electrical Vehicle Sales Rose by 30 Percent in November, Likely to Hit Near 200,000 by Year End

Good news continues in the U.S. on the renewable energy front where electrical vehicle sales increased by about 30 percent in November of 2017 vs November of 2016.

In all, 17,178 electrical vehicles sold on the U.S. market in November. This number compares to 13,327 sold during November of 2016. Top selling brands for the month were the Chevy Bolt EV, The Tesla Model X, the Chevy Volt, the Toyota Prius Prime, and the Tesla Model S. The Chevy Bolt topped the list of monthly best sellers with nearly 3,000 vehicles going to owners during the month. The top annual seller remains the Model S (at 22,085 estimated sales so far) — which the lower-priced Bolt is unlikely to surpass this year.

(Over the past few years, the performance of electrical vehicles has been steadily catching up to or outpacing that of conventional fossil fuel vehicles. The Tesla Roadster by 2019-2020 will have a 620 mile range, hyperfast charging, a top speed of 250 mph, and be able to go from 0-60 in 1.9 seconds. A combined set of specs that no gas guzzler could hope to match. By 2022, most EVs will cost less and perform better than their comparable fossil fuel counterparts. Image source: Tesla.)

Total electrical vehicle sales for the year so far has hit nearly 174,000 through November. This compares to 158,614 for all of 2016. Given that December is often a top sales month and that Model 3 production is continuing to ramp, it’s likely that final sales for 2017 will hit close to or exceed the 200,000 mark for the year in the U.S.

Model 3 Production Ramp Rate Still a Mystery

Model 3 sales will likely continue to ramp through December as Tesla works through scaling production. Considering the fact that there are more than 500,000 Model 3s on order, the big question is — how fast? For even if Tesla were able to produce 10,000 Model 3s per week, it would take more than a year to fill all the orders.

Production is presently considerably lower. But it more than doubled in November to an estimated 345. A similar rate of increase would result in 800 of the vehicles being sold in December. Meanwhile, the company plans to be making 5,000 Model 3s per week by Q1 of 2018.

There are some indications that Tesla is preparing for a start of mass market releases. It is filling an LA Model 3 distribution site even as it has opened up ordering to customers outside of employees. Meanwhile, Panasonic recently announced that battery production issues will soon clear. Which raises the possibility of a faster ramp going forward.

Updated Nissan Leaf Begins Mass Production

New developments also include the start to mass production of the 2018 Nissan Leaf in the U.S during December. The 2018 Leaf features longer range (150 miles), lower cost (700 dollars less) and higher performance (more horsepower) than the previous Leaf. And it will be followed on by a (higher-priced) 225 mile range version in 2019 which will put it in a distance capability class similar to that of the Bolt and the base line Model 3.

Electrical Vehicles — Key Aspect of the Renewable Energy Transition

In context, solar energy, wind, and battery storage are the triad of new renewable energy systems that have the serious potential to really start cutting down global carbon emissions as they replace fossil fuels.

All these energy systems are getting less expensive. All have what they call a positive learning curve. And all can work together in a synergistic fashion while leveraging technological advances. Economic advantages that fossil fuel based systems lack.

In addition, renewable energy sources help to drive efficiency, even as they clean up transportation, power generation, and manufacturing chains they are linked to by producing zero carbon emissions in use.

(By transitioning to renewable energy as the basis for economic systems, we can dramatically reduce global carbon emissions. In order to stave off very harmful impacts from climate change, this transition will have to be very rapid. In the best case, more rapid than the scenario depicted above. Video source: IRENA.)

On the battery storage side, electrical vehicles are a crucial link in the battery development chain. As electrical vehicles are mass produced, this process drives down the cost of batteries which can then be used to store electricity and to replace base-load fossil fuel power generators like coal and gas plants. Meanwhile, battery electrical vehicles are considerably more efficient than gas or diesel powered vehicles and those linked to wind and solar or other renewable energy sources emit zero carbon in use.

Both electrical vehicles and other renewable energy systems have a long way to grow before they provide the same level of energy produced by dirty fossil fuels today. This large gap represents a great opportunity to cut back on the volume of harmful gasses hitting our atmosphere in the near future.

Deadly California Wildfire Erupts in December, Forcing Thousands to Flee

Last night a 500 acre fire exploded to massive size — raging over the hills of Ventura County in Los Angeles. Fanned by strong Santa Anna winds, the fire ballooned to over 45,000 acres by Tuesday morning forcing the evacuation of several thousand homes.

Already there are reports of homes and structures destroyed as the fire rages in or near a number of populated areas. Late last night, power was cut off to upwards of 200,000 people as the fire crossed utility lines. And as of early this morning, the fire was reportedly advancing toward Ventura with 500 firefighters on the scene trying to beat the blaze back. Thankfully, as of yet, there are no reports of injury or loss of life.

Climate conditions on the ground have been very conducive to out-of-season wildfires. During the past month, temperatures across the region have trended between 2 and 4 degrees Celsius above average. Southern California is settling into drought. And over the past day, a strong high pressure system gathering to the north helped to send 40-60 mph Santa Ana winds rocketing over the hills and valleys around Los Angeles.

(Powerful high pressure ridge north of California sent strong Santa Ana winds over a region of California experiencing a warmer than normal fall and falling into drought. Image source: Earth Nullschool.)

Due to human-forced climate change and a related warming of the U.S. Southwest, the fire season for California now never really ends. Global temperatures have increased by 1.1 to 1.2 degrees Celsius since pre-industrial times, and climate zones are moving north. Both warmer temperatures and more extreme ranges of precipitation due to climate change aid wildfires in the west — first by allowing for rapid growth of vegetation during more intense wet periods and second by drying out these growths more swiftly as the climate regime switches to dry.

Since the 1980s, the number of large wildfires out west has quadrupled. But if fossil fuel burning continues, warming will also continue and the already difficult conditions we see will further worsen.

We are entering a time when a region of the west from California all the way north to Alaska and Alberta are starting to see wildfires capable of threatening cities with increasing frequency. If we are to dampen this trend, we need a change to less harmful energy sources and fast.


Hat tip to Andy in San Diego

From Record Floods to Drought in Three Months: Unusually Hot, Dry Conditions Blanket South

Back during late August of 2017, Hurricane Harvey dumped as much as 60.48 inches of rain over southeast Texas. Harvey was the wettest tropical cyclone on record ever to strike the U.S. — burying Houston and the surrounding region under multiple feet of water, resulting in the loss of 91 souls, and inflicting more than 198 billion dollars in damages.

Harvey was the costliest natural disaster ever to strike the U.S. Its tropical rains were the heaviest ever seen since we started keeping a record. But strangely, almost inexplicably, just a little more than three months later, the region of southeast Texas is now facing moderate drought conditions.

(Just three months after Harvey’s record rains, Southeast Texas is experiencing drought. No, this is not quite normal despite a mild La Nina exerting a drying influence. Image source: U.S. Drought Monitor. Hat tip to Eric Holthaus.)

How did this happen? How did so much water disappear so soon? How could an instance of one of the most severe floods due to rainfall the U.S. has ever experienced turn so hard back to drought in so short a time?

In a sentence — climate change appears to be amplifying a natural switch to warmer, drier weather conditions associated with La Nina.

Climate change, by adding heat to the Earth’s atmosphere and oceans fundamentally changes the flow of moisture between the air, the ocean and the land. It increases the intensity of both evaporation and precipitation. But this increase isn’t even. It is more likely to come about in extreme events. In other words, climate change increases the likelihood of both more extreme drought and more extreme rainfall.

Of course, climate change does not exist in a vacuum. Base weather and climate conditions influence climate change’s impact. At present, with La Nina emerging in the Pacific, the tendency for the southern U.S. would be to experience warmer and drier conditions. But in a normal climate, these conditions would tend to be milder. In the present climate — warmed up by fossil fuel burning — the tendency is, moreso, to turn toward an extreme. In this case, an extreme on the hot and dry end of the climate spectrum.

For the region of Southeast Texas flooded so recently by Harvey’s record rains, it means that a turn from far too wet to rather too dry took just a little more than 3 months.

(Both temperature and moisture took a very hard turn over the past 30 days. Such extremely warm and dry conditions increase the likelihood of flash drought. A climate feature that has become far more frequent as the Earth has warmed. Image source: NOAA.)

South Texas, however, is just one pin in the map of a larger trend toward drought that is now blanketing the South. Over the past month, precipitation levels were less than 50 percent of normal amounts in most locations with a broad region over the south and west experiencing less than 10 percent of the normal allotment of moisture. Meanwhile, 90-day precipitation averages are also much lower than normal across the South.

Precipitation is a primary factor determining drought. But temperature can mitigate or worsen drought conditions. Higher temperatures cause swifter evaporation — driving moisture out of soils at a faster rate. And average temperatures across the south have been quite warm recently. With one month averages ranging from 1 C above normal over most of the south to a whopping 8 C above normal over parts of New Mexico. As with lower than normal precipitation, higher than normal temperatures have also extended into the past 90 day period across most of the South.


(Moderate drought conditions are widespread as severe to extreme drought is starting to crop up in the South-Central U.S. With La Nina likely to continue through winter and with global temperatures in the range of 1.1 to 1.2 C above pre-industrial averages, there is risk that conditions will intensify. Image source: U.S. Drought Monitor.)

The upshot is that moderate drought is taking hold, not just in southeast Texas, but across the southwest, the southeast, and south-central U.S. Severe to extreme drought has also already blossomed from northern Texas and Louisiana through Oklahoma, Arkansas and Missouri. This is relatively early to see such a sharp turn, especially considering the fact that La Nina conditions have only lasted for a short while and have, so far, been rather mild on the scale of that particular climate event.

Furthermore, like Texas, many of these drying regions experienced extreme rainfall events during spring and summer. Such events, however, were not enough to stave off a hard shift to drought in a world in which human-caused climate change is now driving both droughts and more extreme rainfall events to rising intensity.

(Predicted temperature and precipitation variance from normal over next three months. Climate change is likely to enhance this variability related feature. Image source: NOAA.)

With La Nina likely to remain in place throughout winter, the typical climate tendency would be for continued above average temperatures across the south and continued below average rainfall for the same region. Present human-caused global warming through fossil fuel burning in the range of 1.1 to 1.2 C above pre-industrial averages will tend to continue to amplify this warm, dry end of the natural variability cycle (for the southern U.S.).

In other words, there is not insignificant risk that the hard turn away from record wet conditions in the South will continue and that severe to very severe drought conditions will tend to spring up and expand.


Hot Blob off Southeast Australia Fuels Life-Threatening Rain Bomb Event

Hot Blobs. These pools of severe warmth at the ocean surface have, during recent years, fueled all kinds of climate change related extreme weather ranging from droughts to floods to record hurricanes.

(Hot blob southeast of Australia features ocean temperatures as high as 8 F [4.5 C] above average. This is an extreme climate and severe weather-triggering feature related to climate change. One that has also been associated with strong, persistent atmospheric ridges and related high pressure systems. Image source: Earth Nullschool.)

The blobs themselves often form under persistent and strong high pressure systems which lock-in both heat and high rates of evaporation. These highs, sometimes called resilient ridges, are thought by a number of experts to be an upshot of changes to both atmospheric circulation and energy balance as a result of the Earth warming. They are an example of the kinds of extreme climate and related severe weather triggering outliers you would tend to expect in a warming world. A new kind of weather phenomena producing new effects.

Today, sea surface temperatures between Australia and New Zealand are ranging as high as 8 F (4.5 C) above average. A very significant warm temperature departure for this area of ocean. One that well meets the qualification for the term ‘hot blob.’ The large blocking high associated with the blob has, for some time now, been circulating very high volumes of moisture evaporating off these much warmer than normal waters over Eastern Australia. This moisture loading provides fuel for powerful storms in the form of both more explosive atmospheric lift and higher rainfall potential.

(Ridge-tough dipole triggers extreme weather in region prepped by moisture venting off an ocean hot blob. Image source: Earth Nullschool.)

All that heat and moisture bleeding off the hot blob just needed a catalyst to produce the kind of climate change related event I’ve been calling a ‘rain bomb.’ And, unfortunately for Southeast Australia, just this kind of catalyst in the form of a sharp facing trough in the Jet Stream and related upper level low forming over South Australia is on the way.

From today through late Friday, this low will generate added atmospheric energy that will produce very severe thunderstorms over Southeast Australia. Ones capable of generating extreme rainfall amounts in excess of 2 inches per hour over certain locations. With total rainfall amounts hitting between 4 inches (100 mm) and 12 inches (300 mm) between now and late Friday.

(Predicted extreme rainfall event is being fueled by very warm sea surface temperatures to the east.)

The storm system will also generate strong winds, lightning, and tidal flooding for some locales.

This is a dangerous event risking loss of property and life with a number of climate change related factors involved. Those in the areas affected should stay tuned to local weather (BOM) and government emergency management for storm and response information.


Hat tip to Colorado Bob

Hat tip to Vic

54 Fahrenheit Above Average: Extreme Warming Event For Greenland, Baffin Bay Underway

At the mouth of Baffin Bay just off the West Coast of Greenland today hurricane force wind gusts are blowing in from the south.

This roaring invasion of warm air originates from the Central Atlantic along a latitude line south of the Azores. It climbs hundreds of miles north to where it is intensified between a grinding 975 mb low off Labrador and a massive 1042 mb high squatting over Central Greenland. Temperatures in this warm air mass range from near 50 degrees (F) over Southwestern Greenland to around 40 degrees (F) over the mouth of Baffin Bay. Or between 9 and 36 degrees (F) above normal for this time of year.

(Hurricane force wind gusts are driving a wedge of above freezing air into Baffin Bay and over Western Greenland at a time when these regions should be seeing well below freezing conditions. Image source: Earth Nullschool.)

This warm wind driven air mass is expected to move north over the next 24 to 48 hours. It will steadily blanket both glaciers and areas typically covered with sea ice. And as it does so, it will push temperatures above freezing for large sections of both Baffin Bay and Western Greenland with above 32 F readings progressing as far as the Petermann Glacier.

What this means is that temperatures will likely hit record ranges of up to 54 degrees Fahrenheit above average in some locations near the far northern extent of this expected warm air invasion. Overall, Greenland itself is expected to see 15 degree (F) above average readings for the entire island. This will generate brief surface melt conditions for parts of Greenland during late November.

(Large region of 20 to 30 C, or 36 to 54 F, above average temperatures is predicted to blanket Greenland and the Canadian Archipelago after moving north through Baffin Bay over the next two days. Image source: Global and Regional Climate Anomalies.)

Strong warm air invasions of the Arctic at this time of year are a signal coming from human-forced climate change. As the northern pole darkens with winter, a global warming related phenomena called polar amplification ramps up. In addition, during recent years, we’ve seen warm air slots tend to develop beneath strong ridging features in the upper level Jet Stream. This year, the warm air slots have tended to form over the Bering Sea along the Pacific side of the Arctic and progress northward into the Chukchi. This has resulted in a large zone of ice free waters for a typically frozen region between Alaska and Siberia as warm winds and storm force waves have continuously beat the ice back.

The present warm air invasion for Greenland may be a signal that a similar warm air slot is attempting to develop over Baffin Bay going forward. Or it may be a fluke in the overall pattern. Watch this space.

UPDATE 11/29/2017: As predicted, temperatures over the Petermann Glacier hit above freezing at around 2200 UTC yesterday. According to climate reanalysis, temperatures for the region are ranging between 50-54 F above average in present model estimates for 11/29. In other words, the warm air invasion progressed as expected and resulted in above freezing temperatures for brief periods across Western and Northern Greenland.

Overall temperatures for Greenland are presently 15.5 F (8.6 C) above average in the models while the Arctic as a whole is 9.9 F (5.5 C) above average.

Just One More Reason Why Fossil Fuels Suck Tailpipe — The Cost of Wind and Solar is Now Lower Than Pretty Much Everything Else

During October, in Australia, something rather strange and hopeful happened. Grid prices for electricity rose. Power customers, fed up with this, en masse decided to purchase 100 megawatts of rooftop solar in a single month.

How and why did this come to pass?

Conservative allies of fossil fuel based utilities are currently in control of the Australian federal government. And they have been working to provide captive grid-tied energy consumers for their political backers — polluting power system owners. Because these systems are more expensive than their renewable energy counterparts, the price of electricity went up.

The Australian public, who generally supports renewables and who likes to pay less for electricity, wouldn’t have any of it. They didn’t like being forced to purchase more expensive, polluting energy. So more than 15,000 of them decided to tell fossil fuel backers to go suck tailpipe and went on ahead and bought solar energy directly.

(Guess what? That green glass you see on the school in this image comes from hundreds of solar panels. Solar is versatile and increasingly inexpensive. You can put it on rooftops, building sides, car roofs, fuel station overheads, build it in traditional utility arrays, construct it on co-generating farms, or float it on reservoir surfaces. Image source: Inhabitat and EPFL.)

This choice, enabled by falling renewable energy prices, is one that people around the world will be more and more able to make as time moves forward. And it’s the case even in instances where national governments of western democracies are heavily influenced by fossil fuel special interests — as is presently the case in Australia. The primary reason is that when conservative governments support fossil fuels and nuclear over renewables, power prices to society rise.

The cost of both wind and solar energy are now less than every traditional power source even in more mature markets like the United States. In this major market, according to Lazard, the levelized price of nuclear is 14.8 cents per kWh, coal is 10.2 cents per kWh, gas is 6 cents per kWh, solar is 5 cents per kWh, and wind is 4.5 cents per kWh. That’s right. Renewables are about 1/3 the price of nuclear, half that of coal, and 10-20 percent less than gas in the U.S.


(The levelized cost of wind and solar energy keeps falling. This is making continued fossil fuel development an expensive and untenable prospect. Image source: Lazard.)

But in places like Australia and in the developing world, this price difference is even greater. In the developing world, there are less legacy fossil fuel power systems — which makes it a no-brainer just to go ahead and build less expensive renewables. And islands like Australia traditionally suffer from higher import costs for fossil fuels and clunky or inefficient fossil fuel energy system components.

Levelized cost is a way of measuring total life-cycle costs. It includes such costs as fuel, transmission and construction. Because renewables do not require fuel and because they are based on technologies that benefit from both advancement and economies of scale, they are able to continuously increase efficiency and reduce cost over time. Fossil fuel based power systems are mated to very inefficient combustion and to mining and extraction of fuels that grow more scarce over time. As such, the power systems they are based on tend to have difficulty reducing costs  and are subject to market shocks and scarcity of feedstocks.

These simple economic facts put the political backers of fossil fuels at a disadvantage on the issue of base economics. But these direct cost related factors don’t even begin to count in the terrible external costs of fossil fuels ranging from ramping damages due to climate change and direct health impacts by adding toxic particles to the air and water. As such, fossil fuels are both economically and morally untenable. But such simple and easy to understand facts haven’t stopped republicans like Trump in the U.S. and LNP members like Turnbull in Australia from trying to ram these harmful and expensive energy sources down the throat of an increasingly outraged public.

From Ice Apocalypse to Mega-Thunderstorms, Continuing to Burn Fossil Fuels Makes the World Scary as all Hell

So I’ve got to say I feel for Eric Holthaus.

Here’s a smart guy. Probably a few years younger than me. A meteorologist by degree and a climate journalist by trade. A guy with two kids that, as is clear from his twitter comments, mean all the world to him. And he’s finally gotten to that point in his study of climate change where he’s thrown his hands up and said — this stuff scares the crap out of me, can we please all just do something about it?

(The calving front of the Pine Island Glacier as seen by a NASA DC-8 aircraft. Image source: Commons.)

For him, as with any of us, the point of existential realization can come through overexposure to a wide range of worsening climate problems. Declining ocean health, rising extreme weather, how much faster we are warming the world up than during the worst hothouse extinction, can all weigh heavily on the heart and mind of any compassionate, feeling person who takes these subjects seriously enough to actually read the science. For Eric, the big deal, and it is a very, very big deal, was sea level rise.

Ice Apocalypse

Yesterday, Eric penned this seminal article on the issue of ice cliff stability as explored by glacier scientist Robert DeConto entitled Ice Apocalypse.

Ice cliff stability is a pretty technical term. One that may make the eyes of your typical reader gloss over. But when we consider that the glaciers of Greenland and Antarctica can be upwards of two miles high, then the question of whether or not the cliffs of those great ice mountains are stable may start to generate a flicker of warning. May conjure up a phantom of the titanic roar set off when such ice giants tumble away into the sea as has happened throughout the deep history of Earth whenever the world warmed up by a certain amount.

When I think of the words ice cliff stability, my mind’s eye pictures a vast wall of numbing white-blue stretching hundreds of feet high. It expands both left and right as far as I can see. And it looms over an endless warming ocean. Waiting for a colossal fall if just that right amount of extra heat is applied.

Ice is fragile. It’s not like stone. It doesn’t flex much. It doesn’t give much. And even minor stresses are enough to make it shatter. We see this with ice cubes in a cup of water at home. Put an ice cube into relatively warmer water, and that little 1×2 inch block will snap and crack. Now just compound that fragility. Set it on the massive scale of a mile-high glacier. Not too hard to image what can happen.

(2012 filming of massive calving event at Jakobshavn Glacier.)

It’s happened already at Jakobshavn Glacier in Greenland. The ocean warmed. The ice shelf protecting the glacier dissolved. And the front of the gigantic glacier fell like great, enormous, white dominoes. We’ve seen it happening in films like Chasing Ice. And we’ve struggled to grasp the enormous scale of it.

Our burning of fossil fuels did this.

Jakobshavn is, even now, contributing to a more rapid rate of global sea level rise. But the amount of ice held back by Jakobshavn is small when compared to the vast volumes kept in check by the Pine Island and Thwaites Glaciers of West Antarctica. What Robert DeConto did, and what has apparently scared Eric Holthaus so much, was apply a computer model based on observations of Jakobshavn ice sheet collapse to these larger Antarctic ice masses.

The DeConto study unearthed results that, indeed, looked apocalyptic. From Grist:

A wholesale collapse of Pine Island and Thwaites would set off a catastrophe. Giant icebergs would stream away from Antarctica like a parade of frozen soldiers. All over the world, high tides would creep higher, slowly burying every shoreline on the planet, flooding coastal cities and creating hundreds of millions of climate refugees.

All this could play out in a mere 20 to 50 years — much too quickly for humanity to adapt…

Instead of a three-foot increase in ocean levels by the end of the century, six feet was more likely, according to DeConto and Pollard’s findings. But if carbon emissions continue to track on something resembling a worst-case scenario, the full 11 feet of ice locked in West Antarctica might be freed up, their study showed.

The DeConto study is just one scientific exploration of what could happen in West Antarctica this Century. And, already, reassurances to a worried Eric Holthaus are forthcoming.

But the problem with the DeConto study, as with any other form of serious climate risk, is that there are plausible scenarios in which terrible catastrophic events are possible even if their degree of likelihood is still somewhat debatable. And reasonable precaution would dictate that even if there were just a 10-20 percent chance of DeConto like events coming to pass, we would do everything we could to avoid them. The risk of this scenario emerging, however, is probably a bit higher. As numerous studies have identified the potential for 6, 8, or even 12 feet of sea level rise by as early as 2100.

The Future of Mega-Thunderstorms Looks Grim if We Continue to Burn Fossil Fuels

Eric’s appeals to his Twitter friends related to his article were touching to me in that I feel like I go through similar shocks with each passing week. And what should be a time of national thanksgiving even as more than half of Puerto Rico’s population is still in the dark 63 days after the climate change amplified blow of Hurricane Maria is no exception.

For a model study recently produced by Nature Climate Change and explored by Bob Henson at Weather Underground has found that the rate of rainfall in large thunderstorm clusters could increase by 80 percent this Century if fossil fuel burning proceeds along a business as usual pathway.

To put this in context, an 80 percent increase in the amount of rain that fell in the Ellicott City Flood in Maryland last year would have produced nearly ten inches of rain in an hour and a half.

(The rainfall intensity in large thunderstorm clusters was found to be greatly enhanced under worst case fossil fuel burning scenarios [RCP 8.5] according to a recent Nature Study. Image source: NCAR, Nature, and Weather Underground.)

As with ice cliff instability, we find ourselves faced with another scientific term in the new study — mesoscale convective systems (MCS). And to translate this term we can simply say that MCSs are gigantic clusters of thunderstorms. The study found that rainfall amounts in the largest of thunderstorm complexes were greatly enhanced as warming proceeded along a business as usual track.

From the Study author’s statement to Weather Underground:

“These new simulations of future MCS rainfall are concerning, because they show very large increases in the amount of rain that a given MCS is likely to produce. The MCSs that we would today consider to be ‘extreme’ in terms of precipitation would become more commonplace in the future. There are also some regions that currently don’t see a lot of MCS activity that might start seeing some of these heavily raining MCSs in the future.”

These increases are on top of already elevated rates of rainfall intensity we presently see today in destructive events that our infrastructure and disaster planning is clearly not prepared for (as seen during Harvey). So as we take the time to give thanks for the great bounty that many of us still have, perhaps we should also take the time to think of the things we can do to keep safe what we have worked so hard for and care so much about and to do our best to help those who are less fortunate. Who have already fallen casualty to a time of troubles.

The Equatorial Pacific is Going Through its Variable Cool Phase, But 2017 is 94 Percent Likely to be the Second Hottest Year Ever Recorded

During late 2016, the Pacific Ocean started to cool off along its Equatorial region after experiencing one of the strongest warming events for that zone ever recorded. But despite this late cooling phase, the year ended up being the hottest ever recorded in the 137 year climate record — topping out at around 1.22 degrees Celsius above preindustrial temperatures. A longer term warming trend that has been directly driven by human burning of fossil fuels and related greenhouse gas emissions.

This year, the periodic Equatorial cooling known as La Nina is again taking place in the Pacific during fall following a very mild warming during winter and spring. But despite the appearance of a second such periodic cooling event, according to NASA 2017 is 94 percent likely to be the second warmest year ever recorded (see above).

October readings have come in and at 0.9 C above NASA  baseline (1.12 C above 1880s averages), temperatures are disturbingly high. The month is now the second hottest ever seen by modern humans. With only October of 2015 coming in warmer at 1.08 C above the 20th Century baseline (1.3 above 1880s).

(Heat transfer into the polar zones is increased during La Nina periods. This effect is enhanced by polar amplification related to human caused climate change. This week, very high relative temperature departures are expected for the Arctic. Image source: Climate Reanalyzer.)

Over the past two years, La Ninas (cooling Pacific) appear to have been at least partly off-set by very strong warming in the Arctic and Antarctic. Atmospheric circulation tends to transport more heat into the polar zones as the Pacific cools. This is due to the fact that temperature differential between Equator and poles during La Nina is less and the lower temperature differential causes the upper level winds to slow and meander. Coupled with polar amplification due to human-caused climate change, the result can be some pretty extreme temperature departures. This week is no exception as Arctic temperatures by Thursday through Saturday are expected to be between 4 and 5 degrees Celsius above average for the entire region above the 66 North parallel.

Such record warm temperatures do not occur in isolation. They help to drive extreme weather events such as severe droughts, rainfall, and powerful hurricanes. They are also accelerating sea level rise by melting glaciers even as both warming temperatures and related increasing ocean acidification contribute to dead zones, coral reef deaths and declining ocean health. Global temperature rise coupled with rising CO2 is therefore producing a major systemic crisis the world over.


Sudden Severe Flood Leaves 14 Dead in Athens, Forecasts Show Up to 15+ Additional Inches on the Way for Greece

Extreme drought. Extreme floods.

Unfortunately, with human-caused climate change, these kinds of devastating events have become far more frequent. With the Earth warming by around 1.1 to 1.2 C above pre-industrial averages, there are now four times as many instances of extreme weather than there were as recently as the 1970s.

What this means is that anywhere around the world now, the hammer of severe weather and related damages is four times more likely to fall than in the past. That the tempo of such events is now greatly increased. All thanks to continued fossil fuel burning, atmospheric CO2 levels that will average around 407 ppm over the coming months, the heat that these greenhouse gasses are continuing to add to the Earth’s climate system, and a failure to transition swiftly enough to more sustainable practices and zero carbon energy sources to prevent ramping damages.

Major Rain Event Strikes Athens — With More Severe Weather in the Forecast

Today, the major blow appears to have fallen on Greece. To the west of this country, over the Mediterranean, a cut off low is creating instability throughout the region. An intense, thick, moist warm air flow is moving in from the south. This warm and very water dense air is then colliding with a colder air mass to the north. Upper level instability is feeding powerful convection erupting in the atmosphere above Greece. And this convection is producing some mountainous thunderheads.

Last night, torrential downpours dropped 2-15 inches of rain over the outskirts of Athens. A biblical flood of water ripped through the region — rocketing vehicles down roads, prompting more than 600 calls for water rescues, killing 14 people, and leaving streets flooded or buried in mud while depositing cars into trees or on the tops of dwellings.

The rains stretched over a broad area from Greece to the Turkish coast — spurring declarations of emergency throughout the area. As with many of the increasingly fierce new disasters, it will take weeks or more to get a final tally of the total damages. But this event is probably not over.

Unfortunately, the cut-off low is expected to continue to circulate near this already flooded region for the next 3-4 days. Forecasts call for additional rainfall totals of up to 15 inches as the low churns and continues to generate outsized convection over an already hard-hit area.



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