THE WINTER SURFACE TEMPERATURE PATTERN OF THE HUANGHAI SEA AND THE EAST CHINA SEA DERIVED FROM THE GMS-l AND NOAA-5 SATELLITEIR IMAGES

The images taken from several meteorological satellites form an important data source in the field of "oceanography from space".The image from the meteorological satellite IR band taken on a cloudless day provides information on the sea surface temperature field.But the raw BWIR images received directly by ground stations show little difference among grey levels of the sea and unsuitableness for plotting sea surface isotherms.With a Phosdac 1000 digital culour analyzer, the writer processed the images of the Japanese Geostationarp Meteorological Satellite GMS-1 IR band (10.5-12.6μ) and those of the U.S.Meteorological Satellite NOAA-5 IR band (10.5-12.5μ) to emphasize the informations of the sea surface temperature (SST) which are then taken as a basis to plot sea surface isotherms.