org.nsidc:G00804 Raymond Assel Unknown GLERL Great Lakes Ice Concentration Data Base, 1960-1979 Boulder, Colorado USA National Snow and Ice Data Center (NSIDC) http://nsidc.org/data/g00804.html Ice concentration grids for 1960 to 1979 are archived for half-month periods, generally December through April. Data values are coded to the nearest ten percent for each 5 x 5 km grid square. A file of geographic coordinates of the center of each grid cell is included for each lake. A file of ice climatology data for each lake includes average, median and mode for each grid cell for each half-month period. Over 2800 charts were digitized to produce this data base. Charts were prepared by NOAA/National Weather Service Forecast Office in Ann Arbor, U.S. Coast Guard Ninth District Ice Navigation Center in Cleveland, and by the Canadian Atmospheric Environment Service. Chart data sources include NOAA satellite, U.S. Coast Guard side-looking airborne radar (SLAR) and aerial visual reconnaissance, Canadian Coast Guard SLAR and aerial visual reconnaissance, and Atmospheric Environment Service analyses. The data were given to NSIDC by the NOAA Great Lakes Environmental Research Laboratory (GLERL), Ann Arbor, MI. scientific research Raymond Assel Unknown GLERL Great Lakes Ice Concentration Data Base, 1960-1979 Boulder, Colorado USA National Snow and Ice Data Center (NSIDC) http://nsidc.org/data/docs/noaa/g00804_glerl_ice_concentrations/index.html 19601101 19790501 publication date Complete Unknown -93 -76 49 41 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Extent EARTH SCIENCE > Cryosphere > Snow/Ice > Lake Ice EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Ice Extent EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Lake Ice NASA Global Change Master Directory (GCMD) Instrument Keywords CAMERAS SLAR > Side-Looking Airborne Radar NASA Global Change Master Directory (GCMD) Platform Keywords AIRCRAFT NOAA POES > NOAA Polar Orbiting Environmental Satellites SHIPS ISO 19115 Topic Categories climatologyMeteorologyAtmosphere inlandWaters None Climatology Freshwater Ice Ice Concentration NASA Global Change Master Directory (GCMD) Location Keywords Continent > North America > USA Continent > North America > United States Of America Continent > North America > United States Of America > Great Lakes > Lake Erie Geographic Region > Mid-latitude 4 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Extent NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Snow/Ice > Lake Ice NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Ice Extent NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Lake Ice None None NSIDC USER SERVICES mailing
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National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
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National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA +1 (303) 492-6199 +1 (303) 492-2468 nsidc@nsidc.org G00804 NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. 20070822 20011009 NSIDC NOAA USER SERVICES National Oceanic and Atmospheric Administration mailing
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder CO 80309-0449 USA +1 (303) 492-6199 +1 (303) 492-2468 nsidc@nsidc.org FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002