On 2019.02.05, a remarkable dust outbreak issued from the Western Sahara coast spread over Gran Canaria islands. This thick plume, with heavy load of particles, and larger than 1.000 km width, was well observed via a series of satellite images:
- in the Red-Green-Blue (RGB) composite image of the OLCI Sentinel-3 sensor, also via the UV absorbing aerosol index (UVAI) retrieved from TROPOMI Sentinel-5 Precursor (S5P). Note that both missions are part of the European Union (EU) Copernicus programme.
- Similarly, as posted on Twitter by the EUMETSAT Atmospheric Composition Satellite Application Facility (AC SAF), via the composite image from Meteosat Second Generation (MSG) SEVIRI & the UVAI from the GOME2 instrument on-board MetOp. Both missions are procured by the EUMETSAT agency.
Several days later, on 2019.03.02, another Saharan dust was transported over Cabo Verde. Similarly, a very large and thick plume was captured in the images from the NASA SUOMI VIIRS sensor, and measured by the aerosol index UVAI from Tropomi.
Such aerosol dust events regularly occur in these areas. I always find the related satellite images not only impressive but also informative regarding their spatial scales, intensity and transport.
- The EU Copernicus programme here
- Overview of the NASA & NOAA SUOMI mission here
- The EUMETSAT AC SAF here
- EUMETSAT agency here
- TROPOMI WebPage here
- Current Earth observation satellites with Sentinel-3 & Sentinel-5 Precursor WebPage here
- Aerosol webPage here