Warm Conveyor Belt - Cloud Structure In Satellite Images

by ZAMG


 
 
13 September 2004/12.00 UTC - Meteosat 8 IR 10.8 image
13 September 2004/12.00 UTC - Meteosat 8 WV 6.2 image
13 September 2004/12.00 UTC - Meteosat 8 VIS 0.6 image
The satellite image shows an anticyclonically curved cloud band of a Warm Conveyor Belt extending from Portugal (approximately 40N/6W) across the Bay of Biscay over France to Germany where it merges with the cloudiness of the Warm Front Band (approximately 54N/13E). As can be seen in the WV image cloudiness exists in a broad wet area and consists of vertically extended cells as well as isolated high Cloud Fibres. In the VIS image only the thick parts of the cloudiness can be recognized indicating high level ice clouds. Dark grey shades in this image represent the middle level cloudiness.

In the above example the Warm Conveyor Belt was clearly connected to the frontal system. An other example shows the Warm Conveyor Belt more isolated over northern Africa

01 July 2005/00.00 UTC - Meteosat 8 IR 10.8 image
The cloud band of the Warm Conveyor Belt extends from Morocco (31N/4W) to Tunis (36N/10E). Within the cloud band some convective cells can be recognised along the northern edge. Within the eastern part of the band over Tunis even a larger convective cell is recognised. The Warm Conveyor belt appears as grey to white in IR imagery.
01 July 2005/00.00 - Meteosat 8 RGB image (3.9, 6.2 and 7.3)
This example shows the typical cloud band enhanced using an RGB build from METEOSAT 8 channels NIR 3.9, WV6.2 and WV7.3. The red areas indicate the dry areas. The Warm Conveyor Belt is marked as blue which indicates that high amounts of water vapour are found at lower levels of the atmosphere. The light blue area over Tunis indicates that high amounts of water vapour are found throughout all layers of the atmosphere.

Menu of Warm Conveyor Belt
Meteorological Physical Background