MODIS Spectral Test.
Zonal mean frequencies of cloudy conditions for October 16,2003, daytime
ocean scenes as a function of three cloud detection tests and the combination
of all 16 tests from MODIS. Note, in this case a single spectral test does
very well, a good candidate for cloud detection comparison methods.
![](Zonal_test_10-16.gif)
Zonal mean frequencies of cloudy conditions for October 16,2003, daytime
land scenes as a function of three cloud detection tests and the combination
of all 16 tests from MODIS.
![](Zonal_test_10-16_nightimeocean.gif)
Accumulated zonal mean cloud occurrence as various tests are added to the
detection algorithm for daytime land (top) and daytime ocean (bottom) scenes.
![](Zonal_DaytimeOcean_testsadded.gif)
Cloud fraction increase due to addition cloud detected by the MODIS 1.38
micron channel.
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