Researchers point to a new link between global warming gases and sea level rise

Antarctica

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A new study provides the first evidence of an increase in green gases as a result of long -term warming in the Amundsen Sea in West Antarctica. Scientists from the British Antarctic Survey (BAS) said that although someone had requested this link, nothing could be said.

The loss of ice from the West Antarctic Ice Sheet in the Amundsen Sea is one of the fastest growing and most closely linked to studies of sea level rise. If the ice of West Antarctica melts, sea levels could rise up to three meters. Specimens of the disappearance of the ice show that the sea in Amundsen Bay warmed a hundred years ago, but scientific knowledge of the land began in 1994.

In the study – published in the journal Geophysical Research Map—Octor photographers have used high -resolution computer simulations to simulate the ocean’s response to possible changes in the atmosphere between 1920 and 2013.

Comparisons show that the Amundsen Sea is warmer than in a century. This heat is similar to the types of wind in the land that increase the temperature by moving hot streams to the bottom of the ice. The increase in green gases was seen to increase these types of winds, so it was thought that the nature of the wind was due to human activity.

This study supports the notion that sea temperatures have been rising in the Amundsen Sea since before the history began. It also provides the link between ocean warming and the types of winds that are known to be driven by global warming gases. Ocean temperatures around the West Antarctic Ice Sheet will continue to rise if global warming emissions increase, with consequences for melting ice and global sea levels. These data show that this trend can be achieved if emissions are reduced and wind conditions remain stable.

Dr. Kaitlin Naughten, ocean-ice model at BAS and lead author of the study, said, “Our simulation shows how the Amundsen Sea responds to long-range conditions in the atmosphere, We know that these winds are related to green gases, but it should give us hope, because sea level rise does not mean beyond our control. “

Professor Paul Holland, a marine and ice scientist at BAS and co -author of the study, said, “Changes in the Southwest winds are well -established in the effect of green gases.However, the Amundsen Sea is also affected by a very strong natural climate change.Simulations show that natural and anthropogenic changes are responsible for the loss of ice. the ocean from the West Antarctic Ice Sheet. ”


Scientists are working on climate change with melting in West Antarctica


More information:
Kaitlin A. Naughten et al, Simulated Twentieth – Century Ocean Warming in the Amundsen Sea, West Antarctica, Geophysical Research Map (2022). DOI: 10.1029 / 2021GL094566

Provided by the British Antarctic Survey

Directions: Researchers show new link between greenhouse gases and sea level rise (2022, April 5) Retrieved 5 April 2022 from https://phys.org/news/2022- 04-link-greenhouse-gases-sea.html

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