The U.S. National Earth Satellite Service (NESS) created hand-drawn Northern Hemisphere maps of snow and ice boundaries on a weekly basis starting in 1966. A satellite meteorologist would use visible satellite data to determine the change in snow and ice boundaries from the previous week, and confirm any drastic changes with surface station observations. Since these maps were the only complete record of snow and ice extent, providing spatially-continuous coverage versus the historical daily point observations taken mainly in populated areas, they were digitized by the Climatology Program at the University of Nebraska onto a 190.5 km resolution polar-stereographic grid, and then objectively analyzed to produce various other snow cover products.
1966-11 to 1991-12
, Every month
Satellite Services Division, Office of Satellite Data Processing and Distribution, NESDIS, NOAA, U.S. Department of Commerce
NASA NSIDC DAAC
NASA National Snow and Ice Data Center Distributed Active Archive Center
Dewey, K. F. and Heim Jr., R., 1982: A Digital Archive of Northern Hemisphere Snow Cover, November 1966 through December 1980 Bull. Amer. Meteor. Soc., 63(10), 1132-1141.
Dewey, K.F., and R. Heim, Jr., 1981: Satellite observations of variations in Northern Hemisphere seasonal snow cover. Technical Report NESS 87, NOAA, 83 pp.
ASCII (see dataset documentation)
Citation counts are compiled through information provided by publicly-accessible APIs according to the guidelines developed through the https://makedatacount.org/ project. If journals do not provide citation information to these publicly-accessible services, then this citation information will not be included in RDA citation counts. Additionally citations that include dataset DOIs are the only types included in these counts, so legacy citations without DOIs, references found in publication acknowledgements, or references to a related publication that describes a dataset will not be included in these counts.