GOES Aerosol Product Evolution

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Minimum Surface Reflectance

Cloud Mask

The GOES Imager Spectral bands Band6,Band4 (DIR) and Band1(visible)are used to create a simple cloud mask. The band1 image at 1731UTC on 20070511 is used here to demonstrate the effect of these filters on clouds in the image.

GOES12 BAND 01 20070511 173144.jpg

The filters based on the above mentioned spectral bands are applied on to this image in the following order and resulting changes are shown in the images

  • Band-6 (13.31 micrometer) deficit threshold filter

GOES12 BAND 06 20070511 1731 Cloud mask B6 Threshold.jpg

  • Band-4 (10.71 micrometer) deficit threshold filter

GOES12 20070511 1731 Cloud mask B6+B4 Threshold.jpg

  • Band-4 to Band-6 ratio threshold filter

GOES12 20070511 1731 Cloud mask B6+B4+Bandratio Threshold.jpg

  • Band-1 threshold filter

GOES12 20070511 1731 Cloud mask B6+B4+ratio+B1 threshold.jpg

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