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, 17 October 2014 from 8:00 a.m. to 5:00 p.m. (USA Mountain Time), our Web site and FTP services will be unavailable because of system maintenance. We apologize for any inconvenience this may cause you.
electromagnetic radiation of shorter wavelength than visible radiation but longer than x-rays; roughly, radiation in the wavelength interval from 10 to 4000 angstroms.