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Cloud Grid Information (CGI)

Cloud grid information (CGI) data consists of five elements: total amount of cloud , amount of upper layer cloud , height of cloud top , amount of convection cloud (for cumulonimbus) and type of cloud. These data are derived from satellite image data observed by MTSAT-1R, and are used as objective material for local or aviation forecast operations.

Sample of Cloud Grid Information(00 UTC on July 1, 2006)
Fig-1(a): Total Amount of Cloud Fig-1(b): Amount of Upper Layer Cloud
Total Amount of Cloud
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Amount of Upper Layer Cloud
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Fig-1(c): Height of Cloud Top Fig-1(d): Amount of Convection Cloud(dealing with Cumulonimbus)
Height of Cloud Top
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Amount of Convection Cloud(dealing with Cumulonimbus)
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Fig-1(e): Type of Cloud
Type of Cloud
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Reference: MTSAT-1R imagery at the same time above(00 UTC on July 1, 2006)
Fig-2(a): Infraed Fig-2(b): Visible
Infrared imagery
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Visible imagery
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Remarks

Last updated 26 February 2009 (E)