When scientists talk about the cryosphere, they mean the places on Earth where water is in its solid form, frozen into ice or snow. Read more ...
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crystals of ice that form when water vapor becomes a solid (bypassing the liquid phase) and deposits itself on the sea ice surface; frost flowers roughen the surface and dramatically affect its electromagnetic signal.
Close-up view of frost flowers. (Photo courtesy of Don Perovich, U.S. Army Cold Regions Research and Engineering Laboratory.)