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Snow and Ice

How Glaciers Turn Lakes Turquoise
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How Glaciers Turn Lakes Turquoise

Fine particles of pulverized rock absorb and scatter sunlight in ways that can give water a striking blue-green color.

Published May 17, 2019

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Spring Freeze in the Labrador Sea
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Spring Freeze in the Labrador Sea

Filaments of sea ice stretch across the waters off southern Greenland, an area that is typically ice-free.

Published May 17, 2019

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Surging Glacier Creates a New Lake
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Surging Glacier Creates a New Lake

Local authorities are watching closely after a fast-advancing glacier in northern Pakistan blocked a stream and created a temporary lake.

Published May 13, 2019

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Two Decades of Change at Pine Island Glacier
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Two Decades of Change at Pine Island Glacier

As this Antarctic glacier sheds huge icebergs more frequently, scientists are closely monitoring the retreat.

Published May 9, 2019

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Snow Cover
Global Maps

Snow Cover

Snow and ice influence climate by reflecting sunlight back into space. When it melts, snow is a source of water for drinking and vegetation; too much snowmelt can lead to floods. These maps show average snow cover by month.

Mar 2000 — Apr 2019

Snow and Ice