In this session the reason why dust detection by satellite is important is going to be explored interactively with the participants.
Published: 3 March 2010
The session will focus on the use of RGB products as a tool to retrieve relevant information from certain MSG channels. In particular, the DUST RGB is going to be thoroughly analysed, exploring the benefits of combining three channels in the infrared region of the electromagnetic spectrum: IR8.7, IR10.8 and IR12.0.
The principle of reverse absorption for dust with the IR10.8 and IR12.0 channels, as well as the differences in desert emissivity between IR10.8 and IR8.7, are key topics of the presentation. Finally, other colours in DUST RGB images are explained to further exploit the product.
At the end of this lecture you should be able to:
- identify dust clouds in DUST RGB products;
- understand the reason why dust is magenta in the Dust RGB product;
- identify different magenta shades for exploring dust level in the Dust RGB product;
- get acquainted to the principle of reverse absorption with IR10.8 and IR12.0 channels;
- realise the impact of the desert emissivity and temperature in RGB products;
- learn what other colours in the Dust RGB product mean.
Pre-requisites: some knowledge in infrared and visible satellite imagery and some experience in weather forecasting and/or air quality.
|Atmosphere||English||Intermediate||✓||45 min||Nuno Moreira|
Dust detection presentation (PDF, 20 MB)
Dust detection recording (ZIP, 56 MB)