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 ...
On Friday, 31 October 2014 from 2:00 p.m. to 3:00 p.m. (USA Mountain Time), our Web site applications will be unavailable due to system maintenance. We apologize for any inconvenience this may cause you.
(1) an ice particle formed by sublimation of vapor in the atmosphere (2) a collection of loosely bonded ice crystals deposited from the atmosphere; high density snow (greater than 550 kilograms per cubic meter; 34 pounds per cubic foot) is called firn if it is older than one year.