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UN weather agency: Record temperatures in 2024 accelerate sea level rise and ice loss.

UN weather agency: Record temperatures in 2024 accelerate sea level rise and ice loss.

The U.N.'s weather agency said that record levels of greenhouse gases have helped to bring temperatures to their highest level ever in 2024. They also accelerated glacier and sea-ice loss, raised sea levels, and brought the world closer towards a critical warming threshold.

The World Meteorological Organization's (WMO) annual climate report stated that the average temperature was 1.55 degrees Celsius (2.79 degrees Fahrenheit), above pre-industrial levels, last year. This is 0.1C higher than the previous record set in 2023.

In the 2015 Paris Agreement, countries agreed to limit temperature rises to 1.5C over the average of 1850-1900.

WMO stated that preliminary estimates place the current average long-term increase between 1.34-1.41C. This is close to but not yet above the Paris threshold.

John Kennedy, WMO’s scientific coordinator and the lead author of the study, said: "One thing that needs to be made very clear is that a single year over 1.5 degrees does not mean that the level specified in the Paris Agreement has been officially exceeded."

He said that the uncertainty in the data means it can't be ruled out.

Other factors, such as changes in the solar cycles, a large volcanic eruption, and a reduction in cooling aerosols, could have also contributed to global temperature increases last year.

While temperatures fell in a few regions, extreme weather caused havoc around the world, with food shortages being caused by droughts, and flooding and wildfires forcing 800,000 people to flee their homes, the most since records began.

The ocean heat has also reached its highest level on record. Rates of warming are also accelerating. Rising CO2 concentrations in the ocean also drive up acidification levels.

Sea ice and glaciers continued to melt rapidly, pushing sea levels up to new heights. WMO data shows that sea levels rose by an average 4.7mm per year from 2015 to 2024 compared to just 2.1mm between 1993 and 2002.

Kennedy warned about the long-term consequences of melting ice in Arctic regions and Antarctica.

He said that "changes in these regions could potentially affect the overall circulation of oceans which can affect climate all over the world." "What happens at the poles does not necessarily stay there." (Reporting and editing by Michael Perry; David Stanway)

(source: Reuters)