EUMeTrain: Water Vapour CAL Module - Water Vapour Channels in Combination Images

Severe convection

The "Severe Convection" RGB is a combination of 6 channels: (WV6.2-WV7.3, IR3.9-IR10.8, NIR1.6-VIS0.6)

The difference of the water vapour channels is seen in the red component of the RGB.It indicates large humidity in the middle troposphere typical for deep convection.

Evolution of convective cells: 11th August 2007:

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For further information see the MSG Interpretation Guide in Eumetsat web pages: http://oiswww.eumetsat.org/WEBOPS/msg_interpretation/index.html