Alaska Climate Research Center

The Alaska State Climate Center
The Alaska State Climate Center
The Alaska State Climate Center
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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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Winter Solstice Daylight

This year, astronomical winter starts on December 21 at 6:59 AKST.  The amount of daylight, as well as the timing of sunrise and sunset, vary considerably across the state on the shortest day of the year.  For example, locations north of the Arctic Circle will not see the sun rise on the solstice, while the

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