A thick plume of sand and mud from the Sahara Desert is seen in these photographs blowing from the west coast of Africa throughout the Atlantic Ocean.
Sandstorms, that are widespread over the Sahara, happen when massive quantities of mud particles from the desert are swept up by robust winds. They’ll float for days and even weeks, relying on how dry, quick and turbulent the air lots change into. Winds within the larger troposphere can then transport the mud throughout oceans and continents. This type of Saharan mud storm is often known as the Saharan Air Layer, which generally types between late spring and early autumn.
These photographs mix completely different observations from Copernicus Sentinel-3 and Copernicus Sentinel-5P on 7 Might 2025. The Sentinel-3 optical picture on the left reveals a dense, orange plume of Saharan sand over roughly 150 000 sq km of the jap Atlantic Ocean. The small islands of Cabo Verde peek out from beneath the clouds within the prime left nook.
In the suitable picture, a Sentinel-5P view has been overlaid on the Sentinel-3 picture to indicate the focus of aerosols within the mud plume: darker tones of orange denote denser aerosol concentrations. Sentinel-5P carries the state-of-the-art Tropomi instrument that maps a large number of hint gases and might measure the aerosol index, which is an indicator of the presence and depth of aerosols resembling mud.
This mix of Sentinel-3 and -5P satellite tv for pc imagery permits scientists to enhance their understanding of those huge mud clouds, and forecasters to offer higher air high quality predictions.
These knowledge are extraordinarily vital for air-quality fashions utilized by, for instance, the Copernicus Atmosphere Monitoring Service to forecast air high quality on a world scale by assessing the focus of atmospheric particulate matter, in addition to to watch and predict how far the mud layer will journey and the way it develops and due to this fact the results it’ll have regionally.
Sandstorms could be a main contributor to diminished air high quality and might trigger hazards to human well being. The suspended particles, in reality, trigger hazy skies, set off air high quality alerts and, when breathed, can result in cardiovascular circumstances and lung issues.
Alternatively, the travelling Saharan mud performs an vital position in our ecosystem. It’s a main supply of minerals and vitamins for phytoplankton and for ecosystems on the opposite facet of the world, together with the Amazon rainforest.
