Physics
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..23.1349t&link_type=abstract
Advances in Space Research, Volume 23, Issue 8, p. 1349-1356.
Physics
1
Scientific paper
For the estimation of global climate change through analysis of the data from multiple satellite sensors, the intercalibration of the sensors is indispensable. In this paper, results of intercalibration of the newly developed VISSR for GMS-5 and NOAA-14 AVHRR are described. The method is based on collocated clear radiance observations with GMS-5 VISSR and NOAA-14 AVHRR. The results of the correlation analysis of the data of IR channels 1 and 2 of GMS-5 VISSR and those of channels 4 and 5 of NOAA-14 AVHRR indicate the following features. The observed brightness temperature with IR channel 1 of VISSR is about 0.8K-1.5K colder than that with channel 4 of AVHRR, while that with IR channel 2 is about 0.1K-1.0K warmer than that with channel 5 of AVHRR. The result of adjustment on working spectral response function and atmospheric correction indicates that the adjusted brightness temperatures with IR channels 1 and 2 of VISSR are about 1K colder than that with channels 4 and 5 of AVHRR. Thus this result shows IR channels 1 and 2 on GMS-5 indicate a certain disagreement with channels 4 and 5 of NOAA-14 AVHRR.
Kurihara Susumu
Tokuno Masami
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