Tuesday, August 3, 2021

Climate Change Henchmen: Storm, Flood, Heat, Smoke and Fire

As climate change strikes with ever greater ferocity, five henchmen dominate the news: Storm, Flood, Heat, Smoke and Fire.


During the first 6 months of 2021, there have been 8 separate billion-dollar weather and climate disaster events across the United States. The U.S. has sustained 298 weather and climate disasters since 1980 where overall damages/costs reached or exceeded $1 billion (including CPI adjustment to 2020). The total cost of these 298 events exceeds $1.975 trillion. The total cost over the last 5 complete years (2016-2020) exceeds $630.0 billion — averaging more than $125.0 billion/year — both new records.

The image on the right shows very high temperatures over North America end July 2021, with fire radiative power as high as 247.3 MW.

The NASA Worldview satellite image below shows large smoke plumes on July 7, 2021, reaching Hudson Bay. Furthermore, large smoke plumes are also visible over British Columbia.


The NASA Worldview satellite image below shows smoke traveling from the West Coast to the East Coast of the U.S. on July 26, 2021.


The Copernicus image on the right shows Siberian fires spreading aerosols over the Arctic Ocean on August 2, 2021 

The NASA Worldview satellite image underneath on the right shows fires (red dots) in Siberia spreading smoke over the Arctic Ocean on August 2, 2021. 

Mainstream media do cover such disasters, often with sensational footage and while pointing at the extensive damage and loss of life caused by such events. 

However, mainstream media rarely point out that climate change is getting worse and and even more so due to feedbacks that can amplify extreme weather events and can further speed up how climate change unfolds.

One of these feedbacks is albedo loss, i.e. decline of the snow and ice cover resulting in less sunlight getting reflected back into space. 

Fires also come with soot that can settle on snow and ice, resulting in surface darkening that will speed up melting and albedo loss. 

The rapid thinning of Arctic sea ice was discussed in an earlier post and is again illustrated by the Naval Research Lab animation on the right. 

As the temperature difference between the North Pole and the Equator narrows, the wind flowing north on the Northern Hemisphere slows down, which changes the Jet Stream, resulting in more extreme weather events, including heatwaves and fires. 

One of the most dangerous feedbacks is that, as temperatures in the Arctic rise at accelerating speed, this will destabilize sediments under the Arctic Ocean where huge amounts of methane are stored, threatening to cause huge quantities of methane to erupt the atmosphere. 

This threat has been discussed in many earlier posts such as this one and this one. 

[ from the feedbacks page ]
This threat becomes dramatically larger as the latent heat threshold gets crossed and the buffer constituted by Arctic sea ice disappears, so further heat entering the Arctic Ocean from the Atlantic Ocean and the Pacific Ocean can no longer be consumed in the process of melting the subsurface sea ice. 

Ominously, the MetOp-2 satellite recorded methane levels as high as 2839 ppb at 469 mb on July 30, 2021 pm, as the image on the right shows.

The image underneath shows how methane levels over the Arctic Ocean at 293 mb on August 1, 2021 pm, while a mean global methane level of 1940 ppb was recorded. At a 1-year Global Warming Potential (GWP) of 200, this translates into 388 ppm CO₂e. 

This 388 ppm CO₂e is almost as high as the mean global carbon dioxide level is at the moment. 

A GWP of 200 for methane is appropriate in the light of the danger of a huge burst of methane erupting from the seafloor of the Arctic Ocean, which would, due to the abrupt nature of such an eruption, make its impact felt instantaneously. 

Methane levels are already very high over the Arctic, so additional methane erupting there will be felt most strongly in the Arctic itself, thus threatening to trigger even further methane releases.

The situation is dire and calls for immediate, comprehensive and effective action as described in the Climate Plan.


Links



• NOAA Billion-Dollar Weather and Climate Disasters: Time Series

• Copernicus - aerosols

• MetOp methane levels

• Heatwaves and the danger of the Arctic Ocean heating up 
https://arctic-news.blogspot.com/2021/06/heatwaves-and-the-danger-of-the-arctic-ocean-heating-up.html

• Arctic sea ice disappearing fast

• When will we die?

• Most Important Message Ever


Posted by at
Labels: , , , , ,

Tuesday, July 6, 2021

Arctic sea ice disappearing fast


Above image, from the National Institute of Polar Research in Japan, shows Arctic sea ice extent at a record low for the time of year, on July 4, 2021, at 8.4 million km².


[ for earlier animations, see discussions ]
Subsequently, the NSIDC also indicated that Arctic sea ice was at record low extent for the time of year, on July 5, 2021, at 8.867 million km² (image above). 

Arctic sea ice is getting very thin rapidly, threatening the latent heat tipping point to get crossed soon. 
     
The U.S. Navy animation on the right shows Arctic sea ice thickness (in m) for the 30 days up to July 31, 2021, with eight days of forecasts included. 

The very thin Arctic sea ice featuring on the University of Bremen image further below on the right indicates that there is now virtually no buffer left to consume further incoming heat. 

Is the Buffer is gone?

[ disappearing sea ice north of Greenland ]
An often-used threshold for a Blue Ocean Event (BOE) is that a BOE occurs when sea ice extent falls below 1 million km². Similarly, a threshold for the latent heat tipping point of Arctic sea ice could be sea ice thickness.

Disappearance of the buffer constituted by subsurface sea ice could be measured by a threshold of most sea ice becoming less than 0.5 meter thin. By that measure, the buffer is now virtually gone, implying that virtually no further heat arriving from the Atlantic Ocean and the Pacific Ocean in the Arctic Ocean can be absorbed in the process of melting of the sea ice.

The NASA Worldview image on the right shows the sea ice on July 29, 2021, north of Greenland, where once the thickest sea ice was located. 

The combination image below show forecasts for July 16 run one day earlier for Arctic sea ice in 2014 (left) and 2021 (right). 



As sea ice gets thinner, ever less ocean heat gets consumed in the process of melting the subsurface ice, to the point where there is only a thin layer of ice left at the surface. While this thin layer of ice may remain at the surface for as long as air temperatures are still low enough, and this ice will still consume some heat at the bottom, at the same time it acts as a seal, preventing heat from the Arctic Ocean to enter the atmosphere.

Albedo loss, latent heat loss, storms and changes to the jet stream can add up to dramatically amplify the temperature rise of the water in the Arctic Ocean, which comes with the danger of destabilization of hydrates at its seafloor, resulting in eruption of huge amounts of methane from hydrates and opening up pathways for release of even further amounts of free gas from underneath these hydrates, as illustrated by the image below.

 
And while the situation in 2021 is dire, the outlook for the years beyond 2021 is that things look set to get progressively worse. 

Outlook is getting worse

This situation in 2021 is the more remarkable given that we're in a La Niña period, as illustrated by the NOAA image on the right showing a forecast issued July 5, 2021, that indicates that La Niña is expected to reach a new low by the end of 2021. 

El Niño events, according to NASA, occur roughly every two to seven years. As temperatures keep rising, ever more frequent strong El Niño events are likely to occur. NOAA anticipates the current La Niña to continue for a while, so it's likely that a strong El Niño will occur somewhere from 2023 to 2025.

Sunspots are on the rise. We were at a low point in the sunspot cycle late 2019/early 2020. As the image on the right shows, the number of sunspots is rising and can be expected to rise further as we head toward 2026, and temperatures can be expected to rise accordingly. 

According to James Hansen et al., the variation of solar irradiance from solar minimum to solar maximum is of the order of 0.25 W/m⁻².

Temperatures are currently also suppressed by sulfate cooling, and their impact is falling away as we progress with the necessary transition away from fossil fuel and biofuel, toward the use of more wind turbines and solar panels instead. Aerosols typically fall out of the atmosphere within a few weeks, so as the transition progresses, this will cause temperatures to rise over the next few years.

So, the outlook is grim. The right thing to do now is to help avoid the worst things from happening, through immediate, comprehensive and effective action as described in the Climate Plan.


Links

• National Institute of Polar Research (NIPR) in Japan
https://ads.nipr.ac.jp/vishop

• The National Snow and Ice Data Center (NSIDC) at the University of Colorado Boulder
https://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph

• NOAA ENSO Evolution
https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/enso_evolution-status-fcsts-web.pdf

Posted by at
Labels: , ,

Saturday, July 3, 2021

A Temperature Rise Of More Than 18 Degrees Celsius By 2026?

On July 1, 2021 pm, the MetOp-1 satellite recorded a mean methane level of 1935 ppb at 293 mb.

[ from earlier post ]
This mean methane level translates into 387 ppm CO₂e at a 1-year Global Warming Potential (GWP) of 200. 

This GWP is appropriate in the light of the danger of a huge burst of methane erupting from the seafloor of the Arctic Ocean, which would, due to the abrupt nature of such an eruption, make its impact felt instantaneously.

Carbon dioxide on July 1, 2021, was 418.33 ppm, as illustrated by the NOAA image below.


Together, this CO₂e level of methane and this carbon dioxide level add up to 805.33 ppm CO₂e, which is 394.67 ppm CO₂e away from the 1200 ppm clouds tipping point which on its own could increase the temperature rise by a further 8°C, as discussed in an earlier post.

This 394.67 ppm CO₂e, again at a 1-year GWP of 200, translates into 1973 ppb of methane. In other words, a methane burst of 1973 ppb or about 5 Gt of methane would suffice to trigger the clouds feedback, adding a further 8°C to the temperature rise, as depicted in the image below. 


A 5 Gt seafloor methane burst would double methane in the atmosphere and could instantly raise the CO₂e level to 1200 ppm and trigger the clouds feedback (top right panel of above chart).

[ from earlier post ]
Even without such a huge eruption of methane from the seafloor, there are further pollutants than just carbon dioxide and methane, such as nitrous oxide, nitrogen oxides, CFCs, carbon monoxide, black carbon, brown carbon and water vapor, and they haven't yet been included in the above CO₂e total. The levels of all these pollutants could rise strongly in a matter of years and feedbacks could start kicking in with much greater ferocity, while the resulting extreme weather events would cause sulfate cooling to end, resulting in an 18.43°C temperature rise that could be reached as early as 2026 (left panel of above chart). 

To further illustrate this, the image on the right shows a trend that is based on NOAA 2006-2020 annual global mean methane data and that points at a mean of 3893 ppb getting crossed by the end of 2026, more than twice the 1935 ppb mean methane level of the image at the top.

Such a high mean methane level by 2026 cannot be ruled out, given the rapid recent growth in mean annual methane levels (15.85 ppb in 2020, see inset on image). And, as said, there are further pollutants, in addition to methane, and additional feedbacks to take into account. 

As discussed in an earlier post, humans will likely go extinct with a 3°C rise, while a 5°C rise will likely end most life on Earth. The temperature rise from pre-industrial to 2020 may well be as large as 2.28°C, as the bottom figure in the bar on the left of above chart shows and as discussed in an earlier post.

Will the IPCC get its act together?

Meanwhile, the IPCC plans to release its next report, the Working Group I contribution to the Sixth Assessment Report (AR6), on August 9, 2021, in the lead up to the COP 26 UN Climate Change Conference, from October 31 to November 12, 2021 in Glasgow, UK. Given their track record, the IPCC and politicians may be reluctant to even consider the information in this post, but it clearly is high time for the IPCC to get its act together. 



The IPCC said, in SR15_FAQ, that the "global temperature is currently rising by 0.2°C (±0.1°C) per decade, human-induced warming reached 1°C above pre-industrial levels around 2017 and, if this pace of warming continues, would reach 1.5°C around 2040." 

Sam Carana: "The temperature rise for the most recent decade (2011-2020) is 0.41°C (NASA data) and the rise from pre-industrial may be 2.28°C, so if this pace continued, 3.11°C could be reached by 2040 and humans will likely go extinct with a 3°C rise. Worse, the rise is accelerating and a rise of as much as 18.43°C could occur by 2026."

Potential temperature rise from pre-industrial to 2026

We face the threat of a potential temperature rise from pre-industrial to 2026 of 18.43°C and the eventual disappearance of all life from Earth, as illustrated by the image below. NASA data shows a 1920-2020 temperature rise of 1.29°C. To calculate the rise from pre-industrial, 0.29°C is added for the 3480 BC-1520 rise, 0.2°C for 1520-1750 and 0.3°C for 1750-1920, while 0.1°C is added to reflect higher polar anomalies and 0.1°C for air temperatures, adding up to a rise of 2.28°C from pre-industrial. A temperature rise of a further 16.15°C could happen by 2026, adding up to a total potential temperature rise of 18.43°C from pre-industrial to 2026. Most species will likely go extinct with a 5°C rise, but humans will likely go extinct with a 3°C rise and eventually, all life would disappear from Earth, as discussed in an earlier post.



In the video below, Guy McPherson comments on the IPCC.


EPA could and should act now

In the US, Joe Biden could simply instruct the EPA to enforce tighter standards. The US supreme court ruled on June 26, 2006, that the EPA has the authority to set standards for greenhouse gas emissions. In 2009, the EPA confirmed that greenhouse gas emissions are pollutants that endanger public health and welfare through their impacts on climate change and admitted that the EPA has the responsibility and the duty to regulate greenhouse gas emissions, and it took until August 3, 2015, for the EPA to issue the Clean Power Plan, giving states a number of choices how to reach set targets for CO₂ emissions. In the light of recent scientific findings and in line with the Paris Agreement, adopted on 12 December 2015, it now makes sense for the EPA to strengthen these targets and enforce this without delay.

Conclusion

The situation is clearly dire and calls for more immediate, more comprehensive and more effective action, as described in the Climate Plan.


Links

• Climate Plan
https://arctic-news.blogspot.com/p/climateplan.html

• Could temperatures keep rising?

• Confirm Methane's Importance
https://arctic-news.blogspot.com/2021/03/confirm-methanes-importance.html

• When Will We Die?
https://arctic-news.blogspot.com/2019/06/when-will-we-die.html

• Overshoot or Omnicide?
https://arctic-news.blogspot.com/2021/03/overshoot-or-omnicide.html

• NASA, Goddard Institute for Space Studies (GISS)
https://data.giss.nasa.gov/gistemp

• IPCC:  Frequently Asked Questions, Special Report on Global Warming of 1.5°C
https://www.ipcc.ch/site/assets/uploads/sites/2/2018/12/SR15_FAQ_Low_Res.pdf

• Possible climate transitions from breakup of stratocumulus decks under greenhouse warming - by Tapio Schneider et al.
https://www.nature.com/articles/s41561-019-0310-1

• Most Important Message Ever
https://arctic-news.blogspot.com/2019/07/most-important-message-ever.html

• Heatwaves and the danger of the Arctic Ocean heating up

• Science Update: Continued IPCC Conservatism and Lies - by Guy McPherson


Posted by at
Labels: , , , , , , ,

Monday, June 28, 2021

Heatwaves and the danger of the Arctic Ocean heating up

 Heatwaves and Jet Stream Changes

Heatwaves are increasingly hitting higher latitudes, as illustrated by the forecasts below. The background behind this is that the temperature rise caused by people's emissions is also causing changes to the jet streams. 

[ click on images to enlarge ]

These changes to the Jet Stream are increasingly creating conditions for heatwaves to strike at very high latitudes, as also illustrated by the images on the right.

The first image on the right shows that surface temperatures as high as 48°C or 118.3°F are forecast in the State of Washington for June 30, 2021, at 01:00 UTC, at a latitude of 46.25°N. At the same time, even higher temperatures are forecast nearby at 1000 hPa level (temperatures as high as 119.4°C or 48.6°C). 

The next two images on the right show what happened to the jet stream. One image shows instantaneous wind power density at 250 hPa, i.e. at an altitude where the jet stream circumnavigates the globe, on June 26, 2021 at 11:00 UTC. The image features two green circles. The top green circle marks a location where the jet stream is quite forceful and reaches a speed of 273 km/h or 170 mph. The bottom green circle marks the same location where the 48°C is forecast on June 30, 2021. This shows how heat has been able to move north from as early as June 26, 2021.

The next image on the right shows the situation on June 30, 2021, 04:00 UTC, illustrating how such a jet stream pattern can remain in place (blocked) for several days (in this case for more than five days). The green circle again marks the same location where the 48°C is forecast (in the top image on the right).

This illustrates how a more wavy jet stream can enable high temperatures to rise to higher latitudes, while holding a pattern in place for several days, thus pushing up temperatures over time in the area.  

As said, these changes in the jet stream that are enabling hot air to rise up to high latitudes are caused by global warming. Accelerating warming in the Arctic is causing the temperature difference between the North Pole and the Equator to narrow, which in turn is making the jet stream more wavy.

The next image on the right shows that a UV index reading as high as 12 (extreme) is forecast for a location at 51.56°N in Washington for June 28, 2021, illustrating that such an extreme level of UV can occur at high latitudes, due to changes in the jet stream.

Accelerated Warming in the Arctic


As the temperature rise is accelerating due to people's emissions, it is speeding up more in the Arctic than anywhere else on Earth. 

The Arctic is heating up faster than elsewhere, as numerous feedbacks and tipping points are hitting the Arctic, including:

• Albedo loss goes hand in hand with decline of the snow and ice cover. Albedo is a measure of reflectivity of the surface. Albedo is higher as more sunlight is reflected back upward and less energy is getting absorbed at the surface. Albedo decline can occur as snow and ice disappears and the underlying darker soil and rock becomes exposed. Even when the snow and ice cover remains extensive, its reflectivity can decline, due to cracks and holes in the ice, due to formation of melt ponds on top of the ice and due to changes in texture (melting snow and ice reflects less light). Calving of the ice can take place where warmer water can reach it, and such calving can increase as storms strengthen and waves get larger.

• Furthermore, albedo loss can occur as dust, soot and organic compounds that are caused by human activities get deposited on the snow and ice cover, reducing the reflectivity of the surface. Organic compounds and nutrients in meltwater pools can lead to rapid growth of algae, especially at times of high insolation.

• Latent heat loss. As sea ice gets thinner, ever less ocean heat gets consumed in the process of melting the subsurface ice, to the point where - as long as air temperatures are still low enough - there still is a thin layer of ice at the surface that will still consume some heat below the surface, but that at the same time acts as a seal, preventing heat from the Arctic Ocean to enter the atmosphere.

• Wind changes including changes to the Jet Stream can further amplify the temperature rise in the Arctic. As the temperature difference between the North Pole and the Equator narrows, the Jet Stream becomes more wavy, spreading out widely at times. The changes to the jet stream cause more extreme weather, including heatwaves, forest fires, storms, flooding, etc. This can cause more aerosols to get deposited on the snow and ice cover. Stronger wind and storms over the North Atlantic can also speed up the flow of warm water into the Arctic Ocean.

Albedo loss, latent heat loss and changes to wind patterns can dramatically amplify the temperature rise in the Arctic. The temperature of the Arctic Ocean is rising accordingly, while there are a number of developments and events that specifically speed up the temperature rise of the water of the Arctic Ocean, as discussed below.


Arctic Ocean heating up

The temperature of the water of the Arctic Ocean is rising, due to a number of events and developments:
                 [ from the insolation page ]
  • Solstice occurred on June 21, 2021. The Arctic is now receiving huge amounts of sunlight (see image on the right, from the insolation page).

  • Sea surface temperatures and temperatures on land are very high in Siberia, Canada and Alaska. Strong winds can spread warm air over the Arctic Ocean.

  • Arctic sea ice extent is low for the time of year, but at this stage, there still is a lot of sea ice present (compared to September). The sea ice acts as a seal, preventing ocean heat from entering the atmosphere, resulting in more heat remaining in the Arctic Ocean.

[ Lena River, Siberia ]

  • Warm water from rivers is flowing into the Arctic Ocean, carrying further heat into the Arctic Ocean. Above image shows that on June 23, 2021, sea surface temperatures were 22.3°C or 72.2°F at a spot where water from the Lena River flows into the Arctic Ocean. The image on the right shows that at a nearby location the sea surface temperature was 20°C or 36°F higher than 1981-2011. 

  • Warm water from the North Atlantic Ocean and the North Pacific Ocean is flowing into the Arctic Ocean and the amount of ocean heat flowing into the Arctic Ocean is rising each year.

  • As mentioned above, latent heat loss is contributing to the rapid temperature rise in the Arctic. The remaining sea ice acts as a buffer, consuming ocean heat from below. Sea ice is getting thinner each year, so ever less ocean heat can get consumed in the process of melting the sea ice from below.

  • Changes to the jet stream can also cause strong storms to dramatically speed up the amount of heat flowing into the Arctic Ocean, as discussed at the Cold freshwater lid on North Atlantic page.

The danger of the temperature rise of the Arctic Ocean

The danger of the temperature rise of the Arctic Ocean is that it can cause destabilization of hydrates at its seafloor, resulting in eruption of huge amounts of methane from hydrates and from free gas underneath the hydrates.

[ The Buffer has gone, feedback #14 on the Feedbacks page ]

In conclusion, changes to the jet stream could cause a huge temperature rise soon, while a 3°C rise could cause humans to go extinct, which is a daunting prospect. Even so, the right thing to do is to help avoid the worst things from happening, through comprehensive and effective action as described in the Climate Plan.

• Insolation

• Cold freshwater lid on North Atlantic

• Most Important Message Ever
https://arctic-news.blogspot.com/2019/07/most-important-message-ever.html

• Could temperatures keep rising?

• Latent Heat


Posted by at
Labels: , , , , ,
Subscribe to: Posts (Atom)