Alaska Climate Research Center

News: Welcome to our new website Check out our December Monthly Report Learn about CoCoRaHS on our Projects page
News: Learn about CoCoRaHS on our Projects page Welcome to our new website Read about first snowfall dates on our Blog
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Our departure maps are updated daily to show the difference between the current temperature and expected temperature, based on 30 years of previously values.

Arctic Sea Ice Extent: January 20, 2022

January 20, 2022: Over the past week, the sea ice has now increased at a slightly lower rate of of 1.67% from the level on 01/13/2022 of 13.788 M km2 to 14.022 M km2 for this week.

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Tonga Eruption Shockwave

Saturday, January 15, 2022: The explosive eruption of Hunga-Tonga Hunga-Ha’apai sent a shockwave around the world.  Such extensive atmospheric gravity waves triggered by a volcanic eruption have never been observed before.  The waves spread in all directions, completing a circumnavigation of the globe and producing observable pressure peaks at weather stations worldwide. The US National …

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