HR: 1330h
AN: H32B-0552    [PDF]
TI: Sea Ice Surface Temperature From the Moderate Resolution Imaging Spectroradiometer (MODIS)
AU: Hall, D K
EM: dorothy.k.hall@nasa.gov
AF: Hydrological Sciences Branch, Code 974, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Key, J R
EM: jkey@ssec.wisc.edu
AF: NOAA/NESDIS, 1225 West Dayton St., Madison, WI 53706 United States
AU: * Casey, K A
EM: kcasey@icecap.gsfc.nasa.gov
AF: Science Systems and Applications, Inc., 10210 Greenbelt Rd., Suite 600, Lanham, MD 20706 United States
AU: Riggs, G A
EM: griggs@glacier.gsfc.nasa.gov
AF: Science Systems and Applications, Inc., 10210 Greenbelt Rd., Suite 600, Lanham, MD 20706 United States
AU: Cavalieri, D J
EM: donald.j.cavalieri@nasa.gov
AF: Oceans and Ice Branch, Code 971, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 United States
AB: Global sea ice products are produced from the Earth Observing System (EOS) Moderate Resolution Imaging Spectroradiometer (MODIS) on board both the Terra and Aqua satellites. Daily sea ice extent and ice-surface temperature (IST) products are available at 1- and 4-km resolution. Validation activities have been undertaken to assess the accuracy of the MODIS IST product at the South Pole station in Antarctica and in the Arctic Ocean using near-surface air-temperature data from a meteorological station and drifting buoys. Results from the study areas show that under clear skies, the MODIS ISTs are very close to those of the near-surface air temperatures with a bias of -1.1 and -1.2§K, and an uncertainty of 1.6 and 1.7§K, respectively. It is shown that the uncertainties would be reduced if the actual temperature of the ice surface were reported instead of the near-surface air temperature. It is not possible to get an accurate IST from MODIS in the presence of even very thin clouds or fog, however using both the Advanced Microwave Scanning Radiometer-EOS (AMSR-E) and the MODIS on the Aqua satellite, it may be possible to develop a relationship between MODIS-derived IST and ice temperature derived from the AMSR-E. Since the AMSR-E measurements are generally unaffected by cloud cover, they may be used to complement the MODIS IST measurements.
UR: http://modis-snow-ice.gsfc.nasa.gov
DE: 1827 Glaciology (1863)
SC: Hydrology [H]
MN: 2003 Fall Meeting