EUMeTrain: Water Vapour CAL Module - Introduction



Vesa Nietosvaara


This module will demonstrate the usefulness of the water vapour channels in forecasting.
Water vapour images have traditionally been used as additional information which tells about the air streams and water vapour content in the upper and middle levels of the troposphere.

Water vapour is a trace gas, that tells about the origin and kinematics of an airmass. In this respect water vapour images can reveal features that Infrared or Visible channel images are not capable of showing.

Since the introduction of RGB techniques in satellite products, water vapour information is been used more and more in these RGB combination images. Water vapour information is particularly important in Airmass and Convection RGB products.