NOAA/NMC/CAC Arctic and Antarctic Monthly Sea Ice Extent, 1973-1990Entry ID: G00917
Abstract: Sea ice extent from January 1973 through August 1990 was digitized from weekly operational sea ice charts produced by the Navy/NOAA Joint Ice Center. Charts were digitized by hand using a 1Â° latitude x 2.5Â° longitude grid. The grid boxes were then summed in 1Â° latitude x 10Â° longitude slices, and the ice covered area computed. The data represent the extent of sea ice at the end of each month, given for 36 10-degree longitudinal sectors in each hemisphere. Data were provided by the NOAA National Weather Service National Meteorological Center (NMC) Climate Analyses Center (CAC).
Data Set Citation
Dataset Title: NOAA/NMC/CAC Arctic and Antarctic Monthly Sea Ice Extent, 1973-1990
Dataset Release Place: Boulder, CO U.S.A.
Dataset Publisher: National Snow and Ice Data Center (NSIDC)Online Resource: http://www.nsidc.org/data/g00917.html
Start Date: 1973-01-31Stop Date: 1990-08-31
Quality The weekly chart dated closest to the end of the month was selected to represent the sea ice for that month, because it was not practical to analyze each of the weekly charts. This introduces error, or noise, into these estimates for year-to-year comparisons (Ropelewski, 1983). No quality assessment or quality control has been performed on these data at NSIDC.
Data Set Progress
Distribution Media: ftp.
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
Ropelewski, C.F. 1983. Spatial and temporal variations in Antarctic sea ice (1973-82). Journal of Climate and Applied Meteorology. 22,470-473.
Creation and Review Dates
DIF Creation Date: 2002-07-25
Last DIF Revision Date: 2010-12-28