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Last nine years among all 10 hottest: US agency

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All records include the 10 warmest places in the nine years spanning 2013-2021, according to the US agency

Washington:

All records are among the 10 warmest places in the nine years spanning 2013-2021, according to an annual report published Thursday by the US National Oceanic and Atmospheric Administration (NOAA), the latest data outlining the global climate crisis.

For 2021, the average temperature at global surfaces was 1.51 degrees Fahrenheit (0.84 degrees Celsius) above the 20th century average, making the year the sixth warmest year on record overall, which goes back to 1880.

NOAA also uses a 21-year period from 1880 to 1900 as a surrogate to assess pre-industrial conditions, and found that 2021 global land and sea temperatures were 1.87F (1.04C) above average.

In a separate analysis of global temperatures released by NASA, 2021 was tied with 2018 as the sixth warmest on record.

Both data sets differ slightly in their assessment from the European Union’s Copernicus climate change service, which found that 2021 was the fifth warmest on record tracking back to the mid-19th century.

The increase in the abundance of atmospheric greenhouse gases since the Industrial Revolution – such as carbon dioxide, methane, nitrous oxide and halogenated compounds – is primarily the result of human activity and is largely responsible for the observed increase.

Climate scientists say it’s important to keep warming within 1.5C (2.7F) by the end of the century to avert the worst impacts – from mega-storms to mass die-offs in coral reefs and destruction of coastal communities .

The impacts have been felt increasingly in recent years – including record-shattering wildfires in Australia and Siberia, once-1,000 years of heatwaves in North America and extreme rainfall that have swept Asia, Africa, the Americas and Europe. There has been a heavy flood.

Despite the start of the year in a cold phase due to the El Nio Southern Oscillation (ENSO) episode in the central and eastern tropical Pacific Ocean, 2021 saw warmer records.

Notably, the Northern Hemisphere land surface temperature was the third highest on record. The southern hemisphere surface temperatures of 2021 were the ninth highest on record.

Land heat records were broken in parts of North Africa, southern Asia and southern South America in 2021, while parts of the Atlantic and Pacific Oceans saw record-high sea surface temperatures.

No cold records were broken for land or sea areas.

The average annual Northern Hemisphere snow cover was 9.3 million square miles (24.3 million square kilometers), the seventh smallest annual snow cover in the 1967–2021 record.

Meanwhile, with the exception of September and December, Arctic sea ice levels in each of the months of 2021 were in the top-10 lowest levels for those respective months.

On the other hand, the year 2021 had an above-average global tropical cyclone activity with 94 named storms, tying 1994 as the tenth highest in a year.

Climate change increases sea surface temperatures, a major factor influencing cyclone formation and behavior.

(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)

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