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Looking for facts and information? See About the Cryosphere.
Icelights: Answers to your burning questions about ice and climate
What's hot in the news around climate and sea ice and what are scientists talking about now? Read more...
What is the Cryosphere?
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 ...
Long-term snow cover frequencies (1966-2003) derived from Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 3 data, used for Processing Steps, Step 4. Southern Hemisphere permanent ice mask, derived from BU-MODIS land cover data.