Showing posts with label tropics. Show all posts
Showing posts with label tropics. Show all posts

Wednesday, May 29, 2024

Very high temperatures in Tropics

Temperatures in the Tropics (23.5°S-23.5°N, 0-360°E) have been very high in 2024 (see black line, image below), much higher than they were at this time of year in 2023 (orange line). 


The above image shows that on May 24, 2024, the temperature was 26.7°C (or 80.06°F), an anomaly of 1°C (or 1.8°F) compared to 1979-2000. 

The image below shows the average monthly temperature anomaly over the past few years through April 2024, when the anomaly was 1.327°C (or 2.389°F) compared to 1951-1980.  


Note that the above-mentioned anomalies are compared to 1979-2000 and 1951-1980, neither of which is pre-industrial. The anomalies would be much higher when calculated from a pre-industrial base. 

The maps below are adapted from Climate Reanalyzer and show maximum temperatures for three days. The image directly below shows maximum temperatures on May 29, 2024. Extremely high temperatures were recorded in India and Pakistan.


The image below has a focus on Asia, showing the extremely high temperatures recorded in India and Pakistan on May 30, 2024. 


The image below shows maximum temperatures around the world on May 31, 2024. 


Surface precipitable water

Surface precipitable water reached a record high of 27.139 kg/m² in July 2023. Worryingly, data for the first four months of 2024 are a lot higher than they were in 2023 at the same time of year, as illustrated by the image below, adapted from NOAA. This raises fears that surface precipitable water will reach an even higher peak in 2024 than was reached in 2023. 


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

• Climate Reanalyzer
https://climatereanalyzer.org

• NOAA - Physical Sciences Laboratory
https://psl.noaa.gov

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html


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

• Transforming Society
https://arctic-news.blogspot.com/2022/10/transforming-society.html

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

Posts discussing Temperatures in the Tropics in 2024 at facebook are at:
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Friday, May 17, 2024

Temperatures in the Tropics

The image below shows that temperatures in the Tropics (23.5°S-23.5°N, 0-360°E) were very high during the second half of April 2024, and these very high temperatures were sustained during the first part of May 2024. The temperature was 26.9°C (or 80.42°F) on May 11, 2024, an anomaly of 1.1°C (or 1.98°F) from 1979-2000. 


The image below shows the average monthly temperature anomaly over the past few years through April 2024, when the anomaly was 1.327°C (or 2.389°F) from 1951-1980.  


The image below, adapted from Climate Reanalyzer, shows maximum temperatures on May 28, 2024.


Calculating the temperature rise

Note that the anomalies for the top image are calculated from 1979-2000 as a base, while anomalies for the above image are calculated from 1951-1980 as a base. When calculated from a pre-industrial base, these anomalies will be much higher.

Also have a look at the analysis of sponges collected in the Caribbean, illustrated by the image on the right, from an earlier post.

Furthermore, a recent analysis shows that land temperatures 30°N- 90°N in summer 2023 were 2.07°C warmer than 1850-1900, while a subsequent longer-range analysis shows that the mean temperature in the period 1850 to 1900 was actually 0.24°C lower than had been presumed on the basis of the data collected at the time by meteorological stations.

A larger temperature rise comes with stronger feedbacks, e.g. the February 2024 temperature could be as much as 2.75°C above pre-industrial, corresponding with almost ⅕ more water vapor in the air. This is just one out of numerous feedbacks, while there are also developments such as reductions of sulfur emissions that can push up the temperature rise, as discussed in many earlier posts such as this one.

A larger temperature rise comes with increasingly extreme weather events that cause widespread damage and threaten to cause even more loss of life of people, livestock and wildlife, crop failures and ecosystem collapse in the tropics and elsewhere.

Strong hurricanes can significantly add to the danger. More hurricanes are forecast for the 2024 Atlantic hurricane season than during 1950-2020, as illustrated by the above image, from an earlier post.

The IPCC keeps downplaying how dire the situation is we're in

Meanwhile, the IPCC keeps giving the impression that the temperature rise is small, e.g. by using the period 1850-1900 as "reference", despite mounting evidence that the temperature rise is much larger, especially when calculated from a genuinely pre-industrial base. The IPCC also keeps giving the impression that there was a carbon budget to divide among polluters, a carbon budget large enough for polluters to keep polluting for decades to come, whereas there is just a huge carbon debt for which there is no short-term remedy.

A recent analysis concludes that Arctic terrestrial permafrost now emits more greenhouse gases than it stores, and the trend is likely to accelerate as temperatures keep rising in the Arctic. The highest carbon dioxide emissions over the 2000-2020 period came from inland rivers and wildfires. The non-permafrost wetlands exhaled the most methane, and dry tundra released the most nitrous oxide.

The joint CO₂e of emissions in this analysis only cover part of global emissions, e.g. the analysis excludes emissions from Arctic subsea permafrost and from oceans in general, from many mountain areas and from the Southern Hemisphere. The study also appears to have excluded emissions caused by anthropogenic disturbances such as clear-cutting, logging and fracking activities in the region, while calculations typically use a low global warming potential (GWP) for methane (100-year horizon).

The prospect of further releases looks dire. The analysis gives estimates that the upper three meters of permafrost region soils store 1,000 Gt of soil organic carbon, while deeper deposits could store an additional amount of as much as 1,000 Gt C. The analysis concludes that the permafrost region is the largest terrestrial carbon and nitrogen pool on Earth. Miesner et al. warn that an additional 2822 Gt of organic carbon is stored in subsea Arctic shelf permafrost and Huang et al. warn that the top two meters of soil globally holds about 2300 Gt of inorganic carbon, which has been left out of environmental models, and 23 Gt of this carbon may be released over the next 30 years.

The transition from sink to source of the region is an important feedback of the temperature rise that is not fully reflected in many climate models. According to the IPCC, 14–175 Gt CO₂e (in carbon dioxide and methane) gets released per 1°C of global warming, which is likely to underestimate the situation by downplaying many feedbacks. Despite the dire situation, the IPCC keeps promoting less effective policies such as support for biofuel and fuel efficiency standards, as discussed in earlier posts such as this one.

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

• Climate Reanalyzer
https://climatereanalyzer.org

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html

• 300 years of sclerosponge thermometry shows global warming has exceeded 1.5 °C - by Malcolm McCulloch et al. (2024)
https://www.nature.com/articles/s41558-023-01919-7
discussed at facebook at
https://www.facebook.com/groups/arcticnews/posts/10161250170389679

• 2023 summer warmth unparalleled over the past 2,000 years - by Jan Esper et al. (2024)
https://www.nature.com/articles/s41586-024-07512-y
discussed at facebook at
https://www.facebook.com/groups/arcticnews/posts/10161422819504679

• Temperature rise may soon accelerate even more
https://arctic-news.blogspot.com/2024/05/temperature-rise-may-soon-accelerate-even-more.html

• Atlantic ocean heat threatens to unleash methane eruptions
https://arctic-news.blogspot.com/2024/03/atlantic-ocean-heat-threatens-to-unleash-methane-eruptions.html

• The Net GHG Balance and Budget of the Permafrost Region (2000–2020) From Ecosystem Flux Upscaling - by Justine Ramage et al.
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GB007953
discussed at facebook at:
https://www.facebook.com/groups/arcticnews/posts/10161358846384679

• Subsea permafrost organic carbon stocks are large and of dominantly low reactivity - by Frederieke Miesner et al. (2023)
discussed at facebook at:
https://www.facebook.com/groups/arcticnews/posts/10161358846384679

• Size, distribution, and vulnerability of the global soil inorganic carbon - by Yuanyuan Huang et al. (2024)
https://www.science.org/doi/10.1126/science.adi7918
discussed at facebook at
https://www.facebook.com/groups/arcticnews/posts/10161354439024679

• IPCC AR6 WG1 FAQ 5.2 | Can Thawing Permafrost Substantially Increase Global Warming?
https://www.ipcc.ch/report/ar6/wg1/downloads/faqs/IPCC_AR6_WGI_FAQ_Chapter_05.pdf

Shortcomings of IPCC AR6 WGIII - Mitigation of Climate Change

• Just do NOT tell them the monster exists

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

• Transforming Society
https://arctic-news.blogspot.com/2022/10/transforming-society.html

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

Posts discussing Temperatures in the Tropics in 2024 at facebook are at:
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Tuesday, April 30, 2024

Temperature rise in the Tropics (update 5)

The temperature in the Tropics (23.5°S-23.5°N, 0-360°E) reached a new record high on April 24, 2024 of 27°C (or 80.6°F). 


The image below shows the monthly temperature anomaly over the past few years through March 2024, when the anomaly reached a record high of 1.448°C (or 2.606°F).  


Note that the anomaly in the top image is calculated from 1979-2000 as a base, while anomalies in the above image are calculated from 1951-1980 as a base. When calculated from a pre-industrial base, these anomalies will be much higher.

The high temperatures are causing widespread damage and are threatening to cause huge loss of life of people, livestock and wildlife, crop failure and ecosystem collapse in the tropics and elsewhere.

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

• Climate Reanalyzer
https://climatereanalyzer.org

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html

• Extinction
https://arctic-news.blogspot.com/p/extinction.html

• Transforming Society
https://arctic-news.blogspot.com/2022/10/transforming-society.html

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

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

Posts discussing the temperature rise in the Tropics in 2024 at facebook are at: 
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Monday, April 29, 2024

Temperature rise in the Tropics (update 4)

The temperature in the Tropics (23.5°S-23.5°N, 0-360°E) reached a new record high on April 23, 2024 of 26.925°C (or 80.47°F). 


The image below shows the monthly temperature anomaly over the past few years through March 2024, when the anomaly reached a record high of 1.448°C (or 2.606°F).  


Note that anomalies in the above image are calculated from 1951-1980 as a base. When calculated from a pre-industrial base, anomalies will be much higher.

The high temperatures are causing widespread damage and are threatening to cause huge loss of life of people, livestock and wildlife, crop failure and ecosystem collapse in the tropics and elsewhere.

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

• Climate Reanalyzer
https://climatereanalyzer.org

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html

• Extinction
https://arctic-news.blogspot.com/p/extinction.html

• Transforming Society
https://arctic-news.blogspot.com/2022/10/transforming-society.html

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

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

Posts discussing the temperature rise in the Tropics in 2024 at facebook are at:
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Friday, April 26, 2024

Temperature rise in the Tropics (update 3)

The temperature in the Tropics (23.5°S-23.5°N, 0-360°E) reached a new record high on April 20, 2024 of 26.913°C (or 80.44°F). 


The image below shows the monthly temperature anomaly over the past few years through March 2024, when the anomaly reached a record high of 1.448°C (or 2.606°F).  


Note that anomalies in the above image are calculated from 1951-1980 as a base. When calculated from a pre-industrial base, anomalies will be much higher.

The rise in temperature threatens to cause widespread loss of life of people, livestock and wildlife, crop failure and ecosystem collapse in the tropics.

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

• Climate Reanalyzer
https://climatereanalyzer.org

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html

• Extinction
https://arctic-news.blogspot.com/p/extinction.html

• Transforming Society
https://arctic-news.blogspot.com/2022/10/transforming-society.html

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

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

Posts about the temperature rise in the Tropics in 2024 at facebook are at:
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Monday, March 18, 2024

Tragedy set to unfold in Tropics (update)

The temperature in the Tropics (23.5°S-23.5°N, 0-360°E) reached a new record high on March 13, 2024. The image below shows the situation over the years through March 13, 2024, when the average daily surface air temperature was 26.9°C and 1.4°C above 1979-2000 (black line is 2024).


The previous record high temperature was reached on April 24, 2016, when it was 26.8°C, and 1°C above 1979-2000 (grey line is 2016). 

The annual maximum temperature in the Tropics is typically reached in April, but very high temperatures were also reached in early May 2023 (orange line is 2023), so the temperature this year may well rise even higher over the next two months.

Meanwhile, we're still in El Niño, according to NOAA and as illustrated by the image on the right.

The image below shows the monthly temperature anomalies over the past few years through February 2024. 


Note that the anomalies in the two above images are calculated from different bases. When calculated from a pre-industrial base, anomalies will be higher.

These high temperatures threaten to cause widespread loss of life of people, livestock and wildlife, crop failure and ecosystem collapse in the tropics.

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

• Climate Reanalyzer
https://climatereanalyzer.org

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html

• Extinction
https://arctic-news.blogspot.com/p/extinction.html

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

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

Earlier versions of this post are discussed at facebook at:
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Wednesday, February 21, 2024

Tragedy set to unfold in tropics

The temperature is rising rapidly in the tropics. The image below shows the situation in the tropics (23.5°S-23.5°N, 0-360°E) through February 14, 2024, when the average daily surface air temperature was 26.3°C, i.e. 1.3°C above 1979-2000.


On April 24, 2016, it was 26.8°C, the highest temperature on record in the tropics, 1°C above 1979-2000, as the above image also shows. The image below shows temperature anomalies over the years. 

Note that the above anomalies are calculated from 1979-2000, which isn't pre-industrial. When calculated from a genuinely pre-industrial base, anomalies will be higher. Also have a look at the recent analysis of sponges collected in the Caribbean, illustrated by the image below. 


According to NOAA, there is a 100% chance that the current El Niño will persist through February-March-April 2024, as illustrated by the image below. 


The danger is that a tragedy will unfold over the next few months as temperatures look set to exceed the 2016 peak in the tropics and cause widespread loss of life of people, livestock and wildlife, crop failure and ecosystem collapse in the tropics.

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

• Climate Reanalyzer 
https://climatereanalyzer.org

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

• Pre-industrial
https://arctic-news.blogspot.com/p/pre-industrial.html

• 300 years of sclerosponge thermometry shows global warming has exceeded 1.5 °C - by Malcolm McCulloch et al. (2024)  

• Extinction
https://arctic-news.blogspot.com/p/extinction.html

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

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

Tragedy set to unfold in tropics is discussed at facebook:





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