SST in Polynias - a case study

Sea surface temperatures (SSTs) in Antarctic polynias are observed with NOAA-7 imagery. The study demonstrates the possibility of separating open water areas from clouds and ice with Advanced Very High Resolution Radiometer (AVHRR) channels 1, 3, 4 and 5 accurately enough for surface-temperature ret...

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Bibliographic Details
Published in:International Journal of Remote Sensing
Main Authors: Schluessel, P., Grassl, H.
Format: Article in Journal/Newspaper
Language:English
Published: 1990
Subjects:
Antarctic
Antarc*
Online Access:http://hdl.handle.net/21.11116/0000-0009-0F2D-6
http://hdl.handle.net/21.11116/0000-0009-0F2F-4
Description
Summary:Sea surface temperatures (SSTs) in Antarctic polynias are observed with NOAA-7 imagery. The study demonstrates the possibility of separating open water areas from clouds and ice with Advanced Very High Resolution Radiometer (AVHRR) channels 1, 3, 4 and 5 accurately enough for surface-temperature retrievals. Measurements from subsequent overpasses at different viewing angles agree with each other within the theoretically derived error bounds of 0.5 to 1 deg K. It is shown that even the cold Antarctic atmosphere requires a correction to the 11 μm satellite measurements to obtain adequate SST measurements.

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