NOAA/NMC/CAC Arctic and Antarctic Monthly Sea Ice Extent, 1973-1990  View Catalog Page Entry ID
G00917
Summary
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 1° latitude x 2.5° longitude grid. The grid boxes were then summed in 1° latitude x 10° 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 Creator: Ropelewski, C. F.
Dataset Title: NOAA/NMC/CAC Arctic and Antarctic Monthly Sea Ice Extent, 1973-1990
Dataset Release Date: 1983-01-01updated 1990
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/g00917.html
Dataset DOI: http://dx.doi.org/10.7265/N5Z60KZ1
Temporal Coverage
Start Date: 1973-01-31
Stop Date: 1990-08-31
Location Keywords
- GEOGRAPHIC REGION POLAR
- OCEAN ARCTIC OCEAN BAFFIN BAY
- OCEAN ARCTIC OCEAN BEAUFORT SEA
- OCEAN ARCTIC OCEAN CHUKCHI SEA
- OCEAN ATLANTIC OCEAN NORTH ATLANTIC OCEAN
- OCEAN PACIFIC OCEAN NORTH PACIFIC OCEAN BERING SEA
- OCEAN SOUTHERN OCEAN AMUNDSEN SEA
Science Keywords
- Cryosphere Sea Ice Ice Extent
- Cryosphere Sea Ice Sea Ice Concentration
- Oceans Sea Ice Ice Extent
- Oceans Sea Ice Sea Ice Concentration
Ancillary Keywords
- Antarctic
- Arctic
- Gridded Data
- Model Input Data
- Climatology/Meteorology/Atmosphere
- Oceans
Platform
- AIRCRAFT
- GROUND-BASED OBSERVATIONS
- GROUND STATIONS
- SATELLITES
- SHIPS
Instrument
- DIGITIZER
- VISUAL OBSERVATIONS
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
complete
Data Center
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Center Personnel
Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
NSIDC National Oceanic and Atmospheric Administration
Data Center URL: http://nsidc.org/noaa/
Data Center Personnel
Name: NSIDC NOAA User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Distribution
Distribution Media: FTP
Personnel
Chester F. Ropelewski
Role: INVESTIGATOR
NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Related URL
VIEW PROJECT HOME PAGE
Sea Ice Products at NSIDC
VIEW RELATED INFORMATION
Access to NMC/CAC sea ice information and data
Reference
Ropelewski, C.F. 1983. Spatial and temporal variations in Antarctic sea ice (1973-82). Journal of Climate and Applied Meteorology. 22,470-473.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 1983-01-01
Last DIF Revision Date: 2013-03-07
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