Twenty-six daytime NOAA-11/AVHRR images covering the Danish waters are analyzed together with 99 cloud-free bulk temperature measurements. The images are cloud screened with a cloud-detection algorithm, which among other tests is based on a correlation test between channels 2, 4, and 4-5. This correlation test is capable of distinguishing cold water pixels from cloud pixels. According to the split-window hypothesis, the channel 4-5 brightness temperatures should increase, and the channel 4 brightness temperatures should decrease with the radiation path. These split-window assumptions are examined, and the channel 4-5 difference does not seem to carry significant information about the true sea surface temperature.

Date Published: 18 December 1995
PDF: 12 pages
Proc. SPIE 2586, Global Process Monitoring and Remote Sensing of the Ocean and Sea Ice, (18 December 1995); doi: 10.1117/12.228636

Published in SPIE Proceedings Vol. 2586:
Global Process Monitoring and Remote Sensing of the Ocean and Sea Ice
Donald W. Deering; Preben Gudmandsen, Editor(s)