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Search Results for "dust west africa 2012":

Dust from Bay of Arguin to Canary Islands, Off Coast of West Africa – August 19th, 2012

22.2N 17.1W

August 19th, 2012 Category: Dust Storms, Image of the day

Mauritania and Western Sahara – August 18th, 2012

A thick plume of dust blows off the coast of Western Africa, from the Bay of Arguin in Mauritania (below), northward parallel to Western Sahara, reaching the Canary Islands (top edge). The dust completely obscures the waters of the Bay of Arguin, usually bright green from phytoplankton growth.

Dust and Smoke Over West Africa – March 16th, 2012

8.1N 10.3W

March 16th, 2012 Category: Dust Storms, Fires, Image of the day, Rivers

Dust off West Africa - March 14th, 2012

Dust from the Sahara Desert has been blowing off the western coast of the African continent over the last few days, veiling the skies over countries such as Mauritania, Senegal, the Gambia and Guinea Bissau, and stretching towards the Cape Verde islands (click here for previous images).

Here, the dust is blowing in a southwesterly direction, partially obscuring the mouths of rivers such as the Geba River, in Guinea Bissau (near image center). Visible near the border of Liberia, Côte d’Ivoire and Guinea, by the right edge of the image in the lower right quadrant, are a series of fires, releasing a cloud of smoke that mingles with the dust.

Dust Blowing Off West Coast of Africa – March 12th, 2012

17.6N 18.8W

March 12th, 2012 Category: Dust Storms, Image of the day

Dust off West Africa - March 11th, 2012

Dust plume

Dust blows off the west coast of Africa, and over the Atlantic Ocean. The main image focuses on the dust as it blows westward over  southern Mauritania, Senegal, the Gambia and Guinea Bissau, while the detail image shows an S-shaped plume of dust blowing southwestward and then curving counter-clockwise to the northeast.

The dust has not yet reached as far north as the Bay of Arguin, easily identifiable as a green bay on the coast of Mauritania. The green color is due to the growth of phytoplankton in the bay’s waters.

Dust Blowing Off Western Sahara Coast

23.6N 15.9W

December 31st, 2012 Category: Climate Change, Dust Storms

Mauritania – December 28th, 2012

Dust blows off the coast of Western Sahara and over the Atlantic Ocean. It appears thickest in the upper left corner, beyond the Wad Ad-Dahabnota Peninsula (also known as the Villa Cisneros Peninsula). Research has shown that dust storms are increasing  in the Sahara Desert and that in parts of North Africa, annual dust production has increased tenfold in the last 50 years.

Since dust storms transport large amounts of material for long distances, their increasing frequency could have serious consequences for the environment. Scientists say the deposition of dust could affect climate change, disease transmission and air pollution. One concern is that as dust deposits increase, levels of carbon dioxide in the atmosphere could change, directly affecting temperatures and rainfall.

Dust Storm Near Lake Chad – December 27th, 2012

13.3N 14.1E

December 27th, 2012 Category: Climate Change, Dust Storms, Image of the day, Lakes

Niger and Chad – December 25th, 2012

Plumes of dust blow southwestward from the Bodélé Depression, in Chad, towards Lake Chad. A long-term drought in the Sahel region of North Africa that began in the early 1970s, along with overgrazing and the drying of Lake Chad, are believed to contribute to the increase in dust storms in the region and even dust that is carried across the Atlantic Ocean.