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New way to measure Antarctic snowfall helps predict the ice sheet's survival


New way to measure Antarctic snowfall helps predict the ice sheet’s survival
A new satellite finds a surprise: Atmospheric rivers of moisture can dump huge amounts of snow over Antarctica, and now we can track it incredibly closely.
ByMadeleine Stone
Email
A new way of studying Antarctica’s weather, not from Earth’s surface but from space, is revealing a phenomenon that could help determine how quickly the enormous ice sheet melts in a warming world.
The study, published on Tuesday in Geophysical Research Letters, focuses on “atmospheric rivers,” huge belts of water vapor that form over tropical and subtropical oceans, then ride the winds that encircle the planet, delivering sometimes copious amounts of rain and snow. One famous atmospheric river, called the Pineapple Express, is responsible for much of the water supply for the West Coast of the United States.  ....

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Satellite Shows Atmospheric River Storms as Driver of Snowfall


Written by AZoCleantechMar 3 2021
Researchers used NASA’s ice-measuring laser satellite to determine that atmospheric river storms are the main driver of elevated snowfall levels in West Antarctica during the austral winter in 2019.
Thwaites Glacier in 2019. Image Credit: Kiya Riverman.
The results of the study, which was published recently in the
Geophysical Research Letters journal, achieved by researchers from Scripps Institution of Oceanography at the University of California San Diego and their collaborators will help enhance the comprehensive knowledge of the processes forcing change in Antarctica and result in improved predictions of sea-level rise.
The research was financially supported by NASA, with further support from the Rhodium Group’s Climate Impact Laboratory, a consortium of leading research institutions analyzing the threats of climate change. ....

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New study finds atmospheric rivers increase snow mass in West Antarctica


Credit: Kiya Riverman
A new study published today in the journal
Geophysical Research Letters used NASA s ice-measuring laser satellite to identify atmospheric river storms as a key driver of increased snowfall in West Antarctica during the 2019 austral winter.
These findings from scientists at Scripps Institution of Oceanography at the University of California San Diego and colleagues will help improve overall understanding of the processes driving change in Antarctica, and lead to better predictions of sea-level rise. The study was funded by NASA, with additional support from the Rhodium Group s Climate Impact Lab, a consortium of leading research institutions examining the risks of climate change. ....

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