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.
the cumulative number of degree-days below 0 degrees Celsius for a given time period, calculated from the mean monthly temperatures for a specific station without making corrections for positive degree-days in spring and fall.