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Sea surface and remotely sensed temperatures off Cape Mendocino, California

Abstract During September 3-5, 1979, a multisensor oceanographic experiment was conducted off Cape Mendocino, California. The purpose of this experiment was to validate the use of remote sensing techniques over an area along the U.S. west coast where coastal upwelling is known to be intense. Remotely sensed multispectral data, including thermal infrared imagery, were collected above an upwelling feature off Cape Mendocino. Data were acquired from the TIROS-N and NOAA-6 polar orbiting satellites, the NASA Ames Research Center's high altitude U-2 air­craft, and a U.S. Coast Guard C-130 aircraft. Supporting surface truth data over the same feature were collected aboard the National Oceanic and Atmospheric Administration (NOAA) ship, OCEANOGRAPHER. Atmospheric soundings were also taken aboard ship. The results indicate that shipboard measurements of sea surface temperatures can be reproduced within 1°.c or better through remote observation of absolute infrared radiance values (whether measured aboard the NOAA polar orbiting satellite, the U-2 aircraft, or the Coast Guard aircraft) by using appropriate atmospheric corrections. Also, the patterns of sea surface temperature which were derived independently from the various remote platforms provided a consistent interpretation of the surface temperature field.