The vast dust cloud, spotted on June 18 was spotted by NOAA’s Deep Space Climate Observatory and the NASA-NOAA satellite Suomi NPP. Views from Suomi NPP, which NASA shared here, show the dust plume spreading out over 2,000 mile of the North Atlantic Ocean.
A global view of the dust storm from DSCOVR’s Earth Polychromatic Imaging Camera (EPIC) shows the sheer scale of the plume in relation to the continents which border the Atlantic, according to NASA’s Earth Observatory site.
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Also on June 18, NASA’s Terra satellite was able to get a detailed look at the dust over the Cape Verde islands off Africa’s west coast using the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument.
This moving plume was no surprise as earlier in the week, on June 16, NOAA’s GOES-East satellite captured stunning imagery of the plume traveling from the Sahara Desert west across the Atlantic.
The traveling dust was also expected because, according to NOAA’s Hurricane Research Division, every three to five days from late spring through early fall, such a dust cloud, known as the Saharan Air Layer (SAL), forms over the Sahara Desert and starts moving westward across the Atlantic. The SAL stretches anywhere from 5,000 to 20,000 feet (1.5 to 6 kilometers) into the atmosphere.
On June 16, 2020, @NOAA’s #GOESEast 🛰️ captured this imagery of an expansive #DustPlume from the #Sahara Desert traveling west across the Atlantic. It’s expected to reach the #Caribbean later this week, and may even reach parts of the U.S. next week.More: https://t.co/W7FP26Pkn1 pic.twitter.com/Eq5ZVrlrnYJune 18, 2020
Every year, about 800 million tons of dust is picked up by the wind from deserts in North Africa and blown across the Atlantic Ocean, traveling to the Amazon River Basin in South America, beaches in the Caribbean and, in part, into the air in North and South America.
While the dust has a different effect in the different places where it lands, in the Amazon, the minerals in the dust replace critical nutrients in rainforest soils that are continuously carried away by tropical rains.