MSG – EUMETSAT Middle East
The EUMETSAT MSG dust product is RGB composite based upon infrared channels of SEVIRI. It is designed to monitor the evolution of dust storms over deserts during both day and night. The combination does allow however the further (24 hour) tracking of dust clouds as they spread over the sea. The RGB combination exploits the difference in emissivity of dust and desert surfaces. In addition, during daytime, it exploits the temperature difference between the hot desert surface and the cooler dust cloud. The RGB composite is produced using the following MSG IR channels: IR12.0-IR10.8 (on red), IR10.8-IR8.7 (on green); and IR10.8 (on blue). Dust appears pink or magenta in this RGB combination. Dry land looks from pale blue (daytime) to pale green (nighttime). Thick, high-level clouds have red-brown tones and thin high-level clouds appear very dark (nearly black). Emissions and subsequent transport of individual dust events can be very well observed and followed in the RGB composite pictures.
Meteosat-8 is EUMETSAT’s contribution to the Indian Ocean Data Coverage (IODC) service, and will provide this crucial function together with India’s INSAT-3D, at 82°E, China’s FY-2E at 86.5°E and Russia’s Elektro L N2 at 77.8°E in an international, cooperative arrangement.
We present here the RGB dust product for the Middle East based on Meteosat-8 observations.