Showing posts with label action. Show all posts
Showing posts with label action. Show all posts

Saturday, January 18, 2025

Why downplay the need for action?

The 2024 global average surface temperature was 1.55°C above the 1850-1900 average, according to WMO’s consolidated analysis of six datasets. 

[ click on images to enlarge ]
Differences between datasets are mainly due to the ways temperatures are measured, e.g. ERA5 measures the temperature of the air above oceans, whereas NASA and NOAA measure the surface temperature of the water, which is lower. There can also be differences in how temperatures are measured in areas with sea ice - the sea ice can be measured, or the water underneath the sea ice, or the air above the sea ice. Also, in some areas there once was sea ice that has meanwhile disappeared. Different ways of measuring things can raise the temperature record by as much as 0.2°C and even more in case of earlier years, where the margin of error is also larger. 

Importantly, the temperature rise in the above image is compared to the period 1850-1900, which is not pre-industrial. When using a genuinely pre-industrial base, the temperature anomaly may already have been above the 2°C threshold in 2015, when politicians at the Paris Agreement pledged that this threshold wouldn't be crossed.

[ from earlier post ]
“Individual years pushing past the 1.5 degree limit do not mean the long-term goal is shot", UN Secretary-General Antóno Guterres says: “It is important to emphasize that a single year of more than 1.5°C for a year does NOT mean that we have failed to meet Paris Agreement long-term temperature goals, which are measured over decades rather than an individual year", WMO Secretary-General Celeste Saulo adds. 

However, for this argument to hold, the average anomaly would need to fall to under 1.5°C from now. Should we really have to wait for another decade or two, before a confirmation is allowed to be issued that 1.5°C has been crossed. Isn't such a mandate part of downplaying how dire the situation is, an effort to delay the necessary action? Moreover, does such a mandate make sense? 
[ click on images to enlarge ]
[ for more background, also view the Extinction page ]
To illustrate this point, the above image uses NASA anomalies (blue dots) that are conservatively compared to NASA's default 1951-1980 base, with data going back to 2010. The image thus shows a 30-year review period centered around January 1, 2025. Eight imaginary years of data have been added beyond existing data, extending the trend into the future (yellow dots). The wide pink trend is based on both NASA existing data and these imaginary data, jointly covering data from 2010-2032. The narrow black trend is not based on imaginary data, it is purely based on existing data, from 2010-2024, showing the potential for such a trend to eventuate when using existing (i.e. past) data only.

In case such a trend would indeed eventuate, confirmation of the crossing of the 1.5°C threshold should NOT be delayed until all the years of a 30-year period have been entirely completed. In fact, 2°C (vs 1951-1980) would already be crossed early 2026. In the course of 2032, a 16°C rise would be reached, while the average anomaly for the period 2010-2032 would be higher than 3°C (vs 1951-1980) with still 7 years to go before the 30-year period would be completed.

Warnings about the potential for such a rise have been sounded before, e.g. see the extinction page.

See also the image below with daily data.
[ temperature anomaly with ENSO shading, trends added, from an earlier post ]
Human extinction at 3°C

If the temperature does indeed keep rising rapidly, the anomaly compared to pre-industrial may soon or already be higher than 3°C, implying that humans are already functionally extinct, especially if no decisive, comprehensive and effective action is taken.

Analysis by Shona and Bradshaw found that, due to co-extinction, global biodiversity collapse occurs at around 5°C heating, as discussed in a 2019 post with the warning that a rise of more than 5°C could happen within a decade, possibly by 2026, and that humans who depend on many other species will likely go extinct with a 3°C rise.


A recent study by Joseph Williamson et al. finds that many species that live together appear to share remarkably similar thermal limits. That is to say, individuals of different species can tolerate temperatures up to similar points. This is deeply concerning as it suggests that, as ecosystems warm due to climate change, species will disappear from an ecosystem at the same time rather than gradually, resulting in sudden biodiversity loss. It also means that ecosystems may exhibit few symptoms of heat stress before a threshold of warming is passed and catastrophic losses occur. 

Arctic sea ice

[ Arctic sea ice extent, click on images to enlarge ]
During the first few months of the year, Arctic sea ice is still growing in extent. In the above image, the red line and red marker shows 2025 sea ice extent. Dots mark Arctic sea ice extent on January 19 for the respective year and Arctic sea ice extent was at a record low for the time of year on January 19, 2025, despite La Niña conditions. 

A new El Niño may emerge in the course of 2025, while both Arctic sea ice extent and volume are at record low, while numerous self-reinforcing feedbacks are kicking in with accelerating ferocity and while further mechanisms are active that drive up temperatures such as high sunspots. Such a combination of mechanisms could cause a huge temperature rise and a Blue Ocean Event in 2025, threatening huge amounts of methane to erupt from the seafloor.


[ Arctic sea ice volume, click to enlarge ]
On Jan 18, 2025, the sea surface temperature south of Svalbard (green circle) was 5.1°C, 3.4°C higher than 1981-2011, as the above image shows. 

High ocean temperatures result in low Arctic sea ice volume, as illustrated by the image on the right and discussed in this earlier post.

Guy McPherson discussed the consequences of an ice-free Arctic Ocean in the video below, adding that "a near-term, ice-free Arctic Ocean—the so-called Blue Ocean Event—is the extinction-causing event over which we have the least control. The rate of environmental change in the wake of such an event will suffice to cause the extinction of all life on Earth. 
I’m not a fan." 


Climate Emergency Declaration

The situation is dire and the precautionary principle calls for rapid, comprehensive and effective action to reduce the damage and to improve the situation, as described in this 2022 post, where needed in combination with a Climate Emergency Declaration, as discussed at this group.



Links

• WMO confirms 2024 as warmest year on record at about 1.55°C above pre-industrial level
https://wmo.int/news/media-centre/wmo-confirms-2024-warmest-year-record-about-155degc-above-pre-industrial-level

• Met Office - 2024: record-breaking watershed year for global climate 
https://www.metoffice.gov.uk/about-us/news-and-media/media-centre/weather-and-climate-news/2025/2024-record-breaking-watershed-year-for-global-climate

• Berkeley Earth - Global Temperature Report for 2024 
https://berkeleyearth.org/global-temperature-report-for-2024

• NASA - Goddard Institute Surface Temperature (GISTEMP v4) analysis 
https://data.giss.nasa.gov/gistemp

• NASA - Temperatures Rising: NASA Confirms 2024 Warmest Year on Record 

• pre-industrial

• Clustered warming tolerances and the nonlinear risks of biodiversity loss on a warming planet - by Joseph Williamson et al.

• Sunspots
https://arctic-news.blogspot.com/p/sunspots.html

• Arctic and Antarctic Data Archive System (ADS) of the National Institute of Polar Research of Japan
https://ads.nipr.ac.jp

• nullschool.net
https://earth.nullschool.net

• Double Blue Ocean Event 2025?
• Guy McPherson - consequences of an ice-free Arctic Ocean

• Danish Meteorological Institute - Arctic sea ice volume and thickness
https://ocean.dmi.dk/arctic/icethickness/thk.uk.php

• The first ice-free day in the Arctic Ocean could occur before 2030 - by Céline Heuzé et al. https://www.nature.com/articles/s41467-024-54508-3
als0o discussed on facebook at: 
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Friday, April 14, 2023

Temperatures rising fast March 2023

Monthly Northern Hemisphere Land Temperature Anomaly

Temperatures have been rising fast in March 2023. The image below shows the Monthly Northern Hemisphere Land Temperature Anomaly up to March 2023, with two trends added. The blue trend, based on Jan.1850-Mar.2023 NOAA data, points at a 3°C rise in 2032. The magenta trend, based on Oct.2010-Mar.2023 NOAA data, better reflects variables such as El Niño and sunspots, and illustrates how they could trigger a rise of more than 5°C in 2026. Anomalies are versus 1901-2000 (not versus pre-industrial). 


Could it be possible for the temperature to keep following the magenta trend? Let's have a look at how dire the situation is.

Greenhouse gas concentrations keep rising

Reducing emissions is the right thing to do, even though it comes with loss of the aerosol masking effect, a loss that causes a rise in temperatures, as discussed in an earlier post. Yet, despite pledges by politicians, greenhouse gas concentrations in the atmosphere keep rising, as discussed earlier, such as in this post.
The above image illustrates that carbon dioxide (CO₂) was at a record high at Mauna Loa, Hawaii, in three ways: 
  • Daily Record: CO₂ was 424.83 ppm on April 17, 2023;
  • Weekly Record: Average CO₂ was 422.88 ppm for the week beginning April 9, 2023; and
  • Monthly Record: CO₂ in March 2023 was 421 ppm.
CO₂ typically reaches its annual high in May or June, so these records can be expected to be broken over the next few months. 
[ from earlier post ]

Crucially, methane emissions should be cut. The Clouds Tipping Point, at 1200 ppm CO₂e, could be crossed as early as in 2027 due to forcing caused by the rise in methane alone, and crossing this tipping point on its own could result in a further rise of 8°C. When further forcing than the forcing just from methane is taken into account, this could happen even earlier than in 2027.

El Niño and further variables

[ click on images to enlarge ]
Meanwhile, we're moving into an El Niño, as illustrated by the image on the right, adapted from NOAA.

Moving from the bottom of a La Niña to the peak of a strong El Niño could make a difference of more than half a degree Celsius, as illustrated by the images below, adapted from NOAA.

NOAA has issued an El Niño Watch, and the range of possibilities toward the end of the year includes a strong El Niño (4 in 10 chance of Niño-3.4 ≥ 1.5°C) to no El Niño (1 in 10 chance).


As illustrated by the image below, the difference in temperature between November 2022 and March 2023 already is about half a degree Celsius and we are not even in an El Niño yet.


El Niño is expected to reach its full strength within a few years, with a maximum possible in 2026.

Furthermore, sunspots look set to reach a high maximum within years, and the 2022 Tonga submarine volcano eruption did add a huge amount of water vapor to the atmosphere, as discussed in an earlier post.

Ocean heat, feedbacks and tipping points

This year (2023), the sea surface temperature (60°S-60°N) has already been above 21°C for 27 days. Such temperatures are unprecedented in the NOAA record that goes back to 1981. The image below shows the difference between all those years. The black line (2023) is as much as 0.3°C hotter than the orange line (2022), and we're only just entering the upcoming El Niño. 


Vast amounts of ocean heat are moving toward the Arctic this year. With further melting of sea ice and thawing of permafrost, the Arctic Ocean can be expected to receive more and more heat over the next few years, i.e. more heat from direct sunlight, more heat from rivers, more heat from heatwaves and more ocean heat from the Atlantic Ocean and the Pacific Ocean.

Last year, North Atlantic sea surface temperatures reached a record high of 24.9°C in early September. Rising temperatures threaten to trigger massive loss of sea ice (and loss of albedo) and eruptions of methane from the seafloor of the Arctic Ocean, as has been described many times before, such as in this post, in this post and in this post.

[ from earlier post ]

The above image illustrates the danger of two tipping points getting crossed, i.e. the Latent Heat Tipping Point and the Seafloor Methane Tipping Point.

Latent heat loss, feedback #14 on the Feedbacks page
[ see the Extinction page ]
This threatens to cause rapid destabilization of methane hydrates at the seafloor of the Arctic Ocean leading to explosive eruptions of methane, as its volume increases 160 to 180-fold when leaving the hydrates, as illustrated by the above image.

Conclusion

A huge temperature rise thus threatens to unfold over the next few years, as illustrated by the image on the right. Altogether, the rise from pre-industrial to 2026 could be more than 18.44°C by 2026.

Meanwhile, humans are likely to go extinct with a rise of 3°C and most life on Earth will disappear with a 5°C rise, as illustrated by the image below, from an analysis discussed in an earlier post. 

This situation calls for urgent action. Reducing emissions alone won't be enough. Carbon also needs to be removed from the atmosphere and oceans, through re-/afforestation, through pyrolysis of biowaste with the resulting biochar (and nutrients) returned to the soil and further methods. Even with a rapid transition to clean, renewable energy, with changes to food, land use, construction and waste management, and with removal of large amounts of carbon from the atmosphere and oceans, still more action is needed.


Marine Cloud Brightening is a good idea, while many further methods may first need more surplus clean energy to be available and/or require more R&D.

Whether action will happen successfully and rapidly enough is indeed a good question, but that question shouldn't be used as an excuse to delay such action, since taking such action simply is the right thing to do.

Accordingly, everyone is encouraged to support and share this Climate Emergency Declaration. 

[ image from Climate Emergency Declaration ]




Links

• NOAA - Monthly Northern Hemisphere Land Temperature Anomaly 
https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/global/time-series/nhem/land/all/3/1850-2023

• NOAA - Recent Daily Average Mauna Loa CO2

• NOAA - Weekly average CO2 at Mauna Loa
https://gml.noaa.gov/ccgg/trends/weekly.html

• Climate Reanalyzer - Daily sea surface temperatures
https://climatereanalyzer.org/clim/sst_daily

• Sea surface temperature at record high
https://arctic-news.blogspot.com/2023/03/sea-surface-temperature-at-record-high.html

• Dire situation gets even more dire

• NOAA - Climate Prediction Center - ENSO: Recent Evolution, Current Status and Predictions
https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/enso_evolution-status-fcsts-web.pdf

• NOAA - Climate Prediction Center - ENSO Discussion

• Climate Emergency Declaration
https://arctic-news.blogspot.com/p/climate-emergency-declaration.html


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Saturday, June 1, 2019

Climate Plan

What we're witnessing is more than a climate crisis, we're facing climate catastrophe and the outlook is grim. We're already in the Sixth Mass Extinction event and we're facing a potential global temperature rise of 18°C or 32.4°F by 2026. Merely declaring a climate emergency is not enough.

[ from earlier post ]
The Climate Plan advocates measures that can be taken in efforts to improve the situation regarding the climate, as well as regarding the health, prospects and wellbeing of people and life in general. These measures can and should be implemented immediately, in line with the current climate crisis.


Seventeen measures for immediate implementation

1. FOSSIL FUEL - Ban the use of coal and natural gas for heating, cooking and generating electricity. Stop supplying natural gas from utilities over pipelines. Ban sales of natural gas bottles. Use rationing of electricity supply from the grid to overcome bottlenecks in supply, until sufficient clean, renewable electricity can fully supply demand over the grid.

2. NUCLEAR POWER - Stop nuclear power plants from continuing to operate and start decommissioning existing plants. Study options for treating and storing waste from such plants.

3. WOOD AND BIOFUEL - Progressively ban the use of wood and other biomass for generating power, for driving vehicles or for other energy-related purposes. Impose fees on sales of biofuel, while using revenues to fund pyrolysis of biowaste and on return of the resulting biochar to the soil locally. Ban sales and installation of new woodburners. Ban sales or supply of firewood, woodchips, briquets, charcoal, etc. Impose annual fees through local rates on real estate that contain existing woodburners, open fireplaces, and traditional ovens and furnaces that use wood, while using revenues to fund rebates on local sales of clean electric alternatives such as heat pumps.

4. ROAD AND RAIL VEHICLES - Progressively electrify all trains and rail traffic, by imposing fees on trains that run on fossil fuel, while using revenues to fund conversion to or purchase of new electric trains. Progressively ban the use of vehicles with internal combustion in cities, first for one day in the week, then for two days a week, etc. Add fees to annual registration of vehicles with internal combustion engines, and use the revenues to fund rebates on registration of electric vehicles. Progressively close petrol stations and ban sales of products such as gas, diesel, petrol and further fossil fuel. Add fees to sales of fossil fuel and use revenues to fund rebates on clean public transport locally. Ensure there is public access to financial records. Set standards to reduce unnecessary vehicle noise, while ensuring sufficient sound is generated to warn people and wildlife.

5. AVIATION - Progressively ban aviation where flights are powered by jet fuel and other fossil fuel and biofuel. Impose fees on sales of such fuel and use revenues to fund rebates on electric airplanes that can take off and land on rooftops. Similarly, add fees to flights entering and leaving airports by airplanes using fossil fuel, while using revenues to fund electric airplanes that can take off and land on rooftops.

6. SHIPPING - Progressively prohibit use of bunker fuel and other fossil fuel in shipping. Impose fees on sales of bunker fuel, with revenues used to fund batteries and hydrogen fuel cells to replace traditional engines in ships. Impose fees on shipping of fossil fuel, with revenues used to clean up waterways and support wildlife conservation.

7. URBAN WASTE - Progressively make that zero % waste leaves each city through transport or through the sky, soil or waterways. Make that waste will be processed within each city, preferably pyrolyzed with biochar and nutrients returned to soils. Add sensors to rubbish bins and garbage collection trucks to ensure that no toxic products are disposed off, unless through collection points that ensure proper processing.

8. PLASTIC - Ensure that no plastic (or plastic parts) will be sold without permit and without fees high enough to ensure return of such items to approved collection points for safe disposal and processing. Ban single-use plastic, such as for packaging, containers, bags, etc.

9. DIET - Progressively ban sales of livestock products, unless supplied for medical purposes if no alternatives are available. Add fees to sales of livestock products, with revenues used to fund rebates on soil and water supplements that contain biochar and olivine sand in rural areas. In coastal areas, use revenues to assist enhanced weathering in waterways. Stop using antibiotics and hormones to stimulate growth in animals. Stop using crop to feed animals, unless for sales of petfood to pets held with a permit. Add fees on sales of products that have carbon dioxide, sugar, salt, flavors or coloring added, with revenues used to promote vegan-organic diet.

10. AGRICULTURE - Add fees on sales of nitrogen fertilizers and use revenues to fund rebates on biochar and enhanced weathering in oceans.

11. WILDLIFE CONSERVATION - Ban chemical pesticides. Remove walls and fences that stop wildlife. Provide ways for wildlife to cross roads and highways. Set aside progressively increasing areas where no urban, agricultural, industrial development is allowed. Move existing buildings, agriculture and industries from such areas. Fund progress through annual fees imposed on real estate in areas zones for industrial, urban and agricultural development.

12. CONSTRUCTION - Add fees on sales of Portland cement, with revenues used to fund carbon-negative construction material used locally. Fees must be high enough to progressively phase out use of Portland cement.

13. AGRICULTURE AND FORESTRY - Prohibit dumping of agricultural and other waste in landfalls, prohibit burning of waste in open fires. Prohibit cutting down large trees without permits. Where permits are supplied, add fees to minimize deforestation, while using revenues to support reforestation and afforestation. Ensure that biowaste gets pyrolyzed, with the biochar returned to the soil locally. Add fees on local rates where soil loses carbon content, with revenues used to fund rebates where soil carbon content increases, such as when biochar and olivine sand are added or when new trees are planted.

14. COOLING - Ban sales of new air-conditioners, fridges and freezers that work with gases. Impose annually rising fees on existing items, while using the revenues from the annual fees to fund rebates on solid state products, including heat pumps.

15. INDUSTRY - Progressively ban the use of fossil fuel in industrial processes by replacing them with clean electricity (i.e. generated by wind turbines or solar panels), or with hydrogen made with such clean electricity. Ban the use of solvents, cleaning substances, propellants and other products that result in further addition of greenhouse gases to the atmosphere. Ensure that manufacturers label products indicating the heating impact.

16. UNIVERSITIES - Encourage further study in the effectiveness of measures in all above areas. Compare what happens locally with what in other areas, to ensure the most effective policy tools are used locally to facilitate the necessary transitions. Government grants are to be given to studies that sufficiently care about above points.

17. FURTHER ACTION - Further lines of action will be needed to hold back the temperature rise. Some action requires further research and U.N. supervision. Some other action has low risk and, due to the urgency to keep temperatures down, testing and R&D should commence immediately. This applies in particular to ways to reduce overheating of the Arctic.

Examples of such measures are Marine Cloud Brightening off the east coast of North America, in efforts to cool the waters entering the Arctic Ocean. Proposals that need further study are the use of icebreakers during the northern Fall and Winter, to enable more heat to escape from the Arctic Ocean, thus reducing the risk of ocean heat destabilizing methane hydrates at the seafloor of the Arctic Ocean. That risk is high from late September when the sea ice starts closing off the Arctic Ocean, thus making it difficult for ocean heat to escape, while warm water is still being carried into the Arctic Ocean from the Atlantic Ocean. Denis Bonnelle has proposed to use icebreakers that travel in parallel and are interconnected to also clear the ice in between them.

While implementation of some of these lines of action requires U.N. supervision, much of the proposed action can readily be implemented locally without delay and the Climate Plan prefers speedy local implementation, with communities deciding what works best locally, provided that a community does take sufficient action to achieve the necessary dramatic reductions in each type of pollution, in line with the Paris Agreement to avoid a large temperature rise. Examples of implementation of some of these lines of action are depicted in the image below, showing examples of how progress can be achieved through local feebates.

[ from earlier post ]

The overview below also includes further possible action that could be considered. Importantly, the situation is that dire that even if all possible action as described is taken, this constitutes no guarantee that any humans will survive the coming decades.


The image below depicts how the above-mentioned measures line up in response to the threat.


In conclusion, the technologies and policy instruments are ready for implementation, so let's stop delaying what's needed so desperately, now is the time for comprehensive and effective action!



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Saturday, September 3, 2016

Action must be taken now


Some of the world's most preeminent climate scientists, all experts with many decades of experience in their respective field, are warning that effective action must be taken now to avoid catastrophe.

These scientists, and many others, have made valuable and much-appreciated contributions to the Arctic-news blog over the years [note: contributors each express their own views in posts and may or may not endorse other content of this blog].

Sam Carana, editor of this blog, has for years supported the calls of these scientists, also discussing and sharing their calls at facebook groups such as Arctic-News, Electric Transport, Renewables and Climate Alert.

[ image discussed at facebook ]

Furthermore, Sam Carana has called for specific action for years, including support for biochar, preferably through feebates. More specifically, Sam Carana recommends that revenues raised from fees imposed on sales of livestock products, nitrogen fertilizers and Portland cement are used to fund support for soil supplements, as illustrated by above image. For more on biochar, see this blog and this facebook group.

For years, Sam Carana has also called for more R&D in specific areas of geo-engineering. For more on this, see this blog and this facebook group.

More generally, Sam Carana advocates the Climate Plan, which calls for a global commitment to parallel lines of action while seeking to delegate implementation to local communities, preferably through effective policies such as local feebates.

This blog has had some success in spreading this message. To date, Sam Carana has received 82,327,368 views at Google plus (see screenshot on the right), while this blog has received 3,255,445 views (see update of views in the panel further on the right).

Your continued support is needed to share this message, so please join one or more of the above-mentioned groups, and share and like the images of this post in emails, on facebook and other social media.

Regarding the urgency to act, the images below give an update on the terrifying situation in the Arctic, where the sea ice is disappearing fast.

The decline of the snow and ice cover in the Arctic goes hand in hand with rising sea surface temperatures that contribute to sea ice getting ever thinner.

The image on the right show Arctic sea ice on September 1, 2016, with thickness in meters.

The warming of the oceans is illustrated by the images below.

The image directly below shows sea surface temperature (left) and anomalies compared to 1981-2011 (right).


The image below also shows sea surface temperature anomalies, this time compared to 1971-2000.


Global warming has hit the Arctic particularly hard over the past 365 days, with anomalies exceeding the top end of the scale over most of the Arctic Ocean, as illustrated by the image below.


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

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Saturday, January 23, 2016

Why America should lead on climate

There are many reasons why America should take the lead in action on climate change.

It's fair and in everyone's interest that America takes the lead

It's fair that those who pollute most, do most to clean things up. America's current and historic emissions are huge, while a lot of what has been produced elsewhere is also consumed in America. Moreover, it's in everyone's interest if America takes the lead. That is confirmed by studies such as this one, showing that there are no technical or economic barriers against cleaning things up. Doing so has many benefits, including job and investment opportunities, and scope for exports. In order for American industries, such as car manufacture, to remain competitive with products from overseas, they must clean up their act. In addition, there are many health and the environmental benefits, while shifting to clean energy will remove perceived needs for America to send military forces across the world to protect global supply lines of fossil fuel.

Legal obligations to act

There are also legal obligations for America to act. Back in 2007, the Supreme Court ruled in Mass. v. EPA that the EPA must act on any air pollutant that endangers public health or welfare. The EPA subsequently found this to be the case for six greenhouse gases and took action, including by issuing plans to limit carbon emissions from power plants. More recently, the United States Court of Appeals for the DC Circuit ruled in favor of the EPA plans.

Furthermore, as Michael Burger points out, Section 115 of the Clean Air Act also authorizes the EPA to act on emissions that contribute to air pollution that endangers public health or welfare in other countries, the more so where the other countries provide the U.S. with reciprocal protections. At the Paris Agreement, such reciprocity was affirmed by some 190 nations (accounting for over 93% of current GHG emissions) pledging to hold the increase in the global average temperature to well below 2°C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5°C above pre-industrial levels.

In other words, no new laws are needed and action can and should be taken now, as this blog has pointed out for years, e.g. in this 2014 post that featured the image below.



The threat of methane eruptions from the Arctic Ocean seafloor calls for urgent action

This blog has repeatedly pointed at another reason why especially America must act, and must do so rapidly, comprehensively and effectively. In October 2015, oceans reached record high temperatures, especially on the Northern Hemisphere, as illustrated by the image below.

Northern Hemisphere October ocean temperatures based on NOAA 1880-2015 data - plot area goes from 1900 to 2050 and from -1 to 4 degrees Celsius above baseline, i.e. compared to the period 1901-2000, the 20th century average.

Above image features a trendline showing that oceans on the Northern Hemisphere could, by the year 2043, be 4°C or 7.2°F warmer than the 20th century average. Increasingly, methane levels over the Arctic Ocean are showing strong increases from October onward, as huge amounts of ocean heat are reaching the seafloor of the Arctic Ocean from that month onward.

North America contributes strongly to accelerating warming of the Arctic Ocean. The Coriolis Effect makes that high levels of emissions originating from North America are extending over the Atlantic Ocean, and are warming up waters off the east coast of North America, as illustrated by the image below.

Top left: CO2 414 ppb green circle, up to 433 ppm in New Jersey. Top right: CO 274 ppb green circle, up to 890 ppb in New Jersey. Bottom left: Jet Stream 250 hPa. Bottom right: Sea surface temperature anomaly 8.5°C/15.3°F green circle.
2015 maximum nightly sea surface temperature anomaly
Carbon dioxide emissions are important, but also relevant are other emissions such as carbon monoxide that depletes hydroxyl, making it harder for methane to be oxidized.

As emissions keep rising, the Gulf Stream will carry ever warmer water into the Arctic Ocean, resulting in greater melting of the sea ice and associated albedo changes that in turn accelerate warming in the Arctic.

Surface temperature anomaly Jan 21, 2015 - Jan 20, 2016
 
This is further illustrated by the images on the right. The top image shows 2015 maximum nightly sea surface temperature anomalies, with anomalies of 5°C off the North American east coast as well as in the Arctic Ocean.

The second image on the right illustrate the extent at which warming in the Arctic Ocean is accelerating, compared to the rest of the world. The image also shows the cold freshwater lid over the North Atlantic.

Temperature anomaly forecast for January 28, 2016
 
As the temperature difference between the Arctic and the equator decreases, the jet stream gets more elongated, at times moving all across the Arctic Ocean. This is one of a multitude of feedbacks that contribute to accelerating warming of the Arctic Ocean. The result is illustrated by the third image on the right, showing strong warming over most of the Arctic Ocean, while at the same time some places on land at higher latitudes north are experiencing extremely cold conditions.

descending cold freshwater on January 25, 2016
Another one of such feedbacks is that warmer water off the coast of North America will result in stronger winds moving over the North Atlantic toward the Arctic Ocean. This can also speed up ocean currents, so it can result in more heat being carried toward the Arctic Ocean both in the atmosphere and the water.

Meltwater from glaciers and sea ice can descend along the edges of Greenland into the North Atlantic, forming a cold freshwater lid on the North Atlantic, where it accumulates at the surface over the years, as illustrated by the image on the right that points at a -4°C or -7.1°F anomaly compared to 1981-2011.

In addition, precipitation (rain, snow, hail, fog, etc.) can further contribute to expansion of this cold
freshwater lid over the North Atlantic, as illustrated by the images on the right.
cold freshwater lid over the North Atlantic

While this cold freshwater may constitute a barrier that slows the flow of warm water toward the Arctic Ocean at the surface, the danger is that it prevents heat transfer to the atmosphere from warm water flowing below the sea surface, with the net result of more heat arriving in the Arctic Ocean.

Furthermore, if this cold freshwater lid also prevents water from sinking deeper in the North Atlantic, this may also contribute to more warm water arriving in the Arctic ocean, as illustrated by the bottom image on the right.

Such feedbacks can dramatically accelerate warming of Arctic Ocean, resulting in heat destabilizing sediments that can contain huge amounts of methane.

In conclusion, America must take the lead in action on climate change. It's fair to do so, it will benefit everyone, there are legal obligations to do so and there is great urgency to act in the light of looming methane eruptions from the seafloor of the Arctic Ocean.

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



In October 2015, oceans reached record high temperatures, especially on the Northern Hemisphere. The image features a...
Posted by Sam Carana on Saturday, January 23, 2016
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Friday, March 6, 2015

Save the Arctic sea ice while we still can!

The Arctic Ocean is coming close to complete summer meltdown, writes John Nissen - indeed it could happen as soon as September, triggering a severe deterioration in climate across the northern hemisphere. With fast-rising temperatures predicted in the coming decade, we must act now to save the Arctic, before it's too late.


By John Nissen

John Nissen: "Nothing has been said by the
IPCC. Nothing has been said in the
mainstream media. Nothing has been said
by the scientific community at large. This
is a terrible omission. It is quite scandalous."
Fossil fuel companies, and their supporters in government, seem blissfully unaware of the dangers ahead, threatening everybody on this planet.

The sea ice is declining far more rapidly than anyone expected. It is declining towards disappearance in summer months, yet the colossal negative impact of a low albedo Arctic has hardly been discussed. This is tragic because the whole situation could have been avoided with good leadership at negligible economic cost.

And as reported this week on The Ecologist, new scientific research indicates that the apparent 'pause' in global warming has, in fact, been no such thing. Instead the surplus heat - two Hiroshima bombs-worth a second - has simply been 'buried'
deep in the Pacific Ocean.

That's because of two important climate cycles, the Pacific Decadal Oscillation and the Atlantic Multidecadal Oscillation, whose operation has masked the warming. But soon they will tip the other way and the 'Big Heat' is set to begin - a five to ten year burst of rapid warming that will be most severe in the Arctic.

Commercial advantages for some ...

If you read the mainstream media, only the positive impact of a melting Arctic is mentioned: an Arctic ripe for exploitation.

Through not grasping the huge negative impact of a low albedo Arctic, the fossil fuel companies still appear entirely happy for the sea ice to disappear as quickly as possible - the sooner the better. Therefore they naturally resist any action to save the sea ice. In particular they don't want geoengineering deployed to cool the Arctic, because it might succeed in saving it!

Certain fossil fuel companies have already invested heavily in exploiting the vast store of oil and gas in the Arctic. These companies, and the governments who support them, are preparing for a bonanza when the sea ice disappears in summer: it will be so much easier and safer to extract the fossil fuel when the sea ice and freezing conditions have gone during summer months.

Furthermore, the disappearance of the sea ice will open up the Northwest Passage and the Northern Sea Route (formerly known as the Northeast Passage) to trade through summer months. So China and nations bordering the Atlantic (including the UK) are expecting to benefit enormously. Russia is investing heavily in ports and infrastructure to support the anticipated heavy traffic.

Various environment groups and the UK Environment Audit Committee have argued against drilling in the Arctic because they are concerned about oil spills and gas blow-outs which could ruin the local environment. They also seek to protect the wild life and Arctic ecosystem. But their arguing will be futile once the sea ice has gone in summer. It will be too late to protect the environment.

Environmentists have less concern about the opening up of the trade routes, because this will reduce CO2 emissions from transport of goods which at present have much longer journeys.

The Arctic bombshell is waiting to go off

While there is all this talk of exploiting the Arctic, little or nothing is said about the adverse effects of having an Arctic free of sea ice during summer months.

Nothing has been said by the IPCC. Nothing has been said in the mainstream media. Nothing has been said by the scientific community at large. This is a terrible omission. It is quite scandalous.

While most experts agree that there will come a time when the Arctic Ocean will be free of ice during summer months, there is no such agreement on the time-scale. Models suggest that it will take decades.

But observations of an exponential trend of sea ice decline suggest that this time could be within a decade. Scientific reports of especially rapid temperature rise in Alaska have also emerged. For example Barrow, Alaska, has experienced a 7°C temperature rise over 34 years, attributed to the decline in sea ice.

So what are the effects? During summer months, a vast area of reflective ice will have been replaced by open water, absorbing 90% of sunshine and warming the Arctic air above. It is clear that the Arctic will be warming much faster than at present - likely at over 2°C per decade.

As heat dissipates around the planet, there will be a huge contribution to global warming in the long term. Estimates put this at equivalent of 3.3 W/m2 (Flanner, 2011) or about twice the current warming from CO2.

But what are the immediate consequences of this super-rapid warming in the Arctic? At present we have an acceleration of three particular processes, affected by Arctic warming to date:
  • Firstly, we have a dramatic rise in Northern Hemisphere weather extremes, as the jet stream behaviour is disrupted.
  • Secondly we have an exponential increase in meltwater from the Greenland Ice Sheet, flowing through moulins on the surface of the ice into the sea and raising the sea level.
  • And thirdly we have a dramatic increase in methane emissions from the Arctic Ocean seabed.
As the temperature in the Arctic continues to increase, these processes will continue almost indefinitely. We can expect worsening Northern Hemisphere climate causing widespread crop failures; faster sea level rise causing progressive flooding of low-lying regions; and growing methane emissions leading to even more catastrophic global warming.

These are three immediate results of the switching on of heat as the Arctic Ocean enters the low sea-ice state. The combination will be devastating for all mankind - with mass starvation and mass migration liable to trigger a world war.

This is the terrifying bombshell. The bonanza will be short-lived, as the effects of a seasonally ice free Arctic Ocean begin to bite.

For a few billion dollars a year, we can save the Arctic

Something must be done to prevent the ocean entering this low-ice state. Therefore the Arctic must be cooled enough to save the sea ice.

The first moment at the end of summer that the sea ice finally disappears from the ocean is called the 'blue ocean event'. It is significant because it could mark the entry of the ocean into a permanent low-ice state for subsequent years - the point of no return. The point of no return could be a soon as next September.

By any ordinary standards, we have left it too late to cool the Arctic. But any reduction in the risk of passing the point of no return is worthwhile, when all our futures are at stake.

Fortunately researchers are increasingly confident that a stratospheric aerosol haze, produced from sulphur dioxide, SO2, could provide significant cooling of the Arctic for modest expenditure of the order of a few billion dollars per year.

This type of cooling could be replaced by cloud brightening using ultra-fine seawater droplets when the technology is ready for large-scale deployment within a year or two.

There should be no significant negative economic impact from this action, except that the resources in the Arctic become frozen assets. But they should be frozen assets in any case if global warming is to be kept below 2°C, according to a recent paper.

There should be positive political impact, because governments will be working together in a common cause to protect their own citizens and all the citizens of the world. The fossil fuel industry has to be persuaded that preserving the Arctic sea ice is essential for the future of themselves and their stakeholders.

Objections from the anti-geoengineering lobby have to be overcome, because we have no other realistic option to reduce the colossal risk of passing a point of no return this September.


John Nissen is Chair of the Arctic Methane Emergency Group
This post earlier appeared in The Ecologist
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