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Posts tagged Cameroon

Plumes of Dust by Lake Chad and Aïr Mountains, Chad and Niger – December 26th, 2012

13.3N 14.1E

December 26th, 2012 Category: Deserts, Dust Storms, Fires, Image of the day

Niger and Chad – December 24th, 2012

Three plumes of dust from the Sahara Desert can be seen blowing west-southwestward in this image of West Africa. Near the center, northeast of Lake Chad, are two light, parallel plumes originating from the Bodélé Depression, in Chad. Near the left edge, south of the Aïr Mountains, in Niger, is the last plume of dust, darker tan in color than the other two and apparently carrying fewer particles. In the lower part of the full image, smoke and fires can be seen across the Central Africa Republic, Cameroon and Nigeria (right to left).

Dust Storm in Bodélé Depression, Chad

16.7N 16.4E

November 22nd, 2012 Category: Dust Storms, Lakes

Chad and Mali – November 22nd, 2012

The whitish streak in the upper right quadrant is sand from the Bodélé Depression blowing southwestward. The depression is located at the southern edge of the Sahara Desert in north central Africa, and is the lowest point in Chad. Dust storms from the Bodélé Depression occur on average about 100 days per year.

The bright green area visible in the lower left quadrant is Lake Chad, a large, shallow, endorheic lake surrounded by Chad, Cameroon, Niger, and Nigeria, on the edge of the Sahara Desert. Due to its shallowness, the size of the lake fluctuates frequently.

Desertification and Shrinking Lake Chad, Chad

13.3N 14.1E

May 2nd, 2012 Category: Deserts, Lakes

Chad - April 28th, 2012

The Sahara Desert encroaches upon Lake Chad, located mainly in the far west of Chad, bordering on northeastern Nigeria, Niger and Cameroon. The name Chad is a local word meaning “large expanse of water”, in other words, a “lake”.

Lake Chad is the remnant of a former inland sea. Closer to the present, Lake Chad was first surveyed by Europeans in 1823, and it was considered to be one of the largest lakes in the world then. Lake Chad has shrunk considerably since the 1960s, when its shoreline had an elevation of about 286 metres (938 ft) above sea level, and it had an area of more than 26,000 square kilometres (10,000 sq mi), making its surface the fourth largest in Africa.

An increased demand on the lake’s water from the local population has likely accelerated its shrinkage over the past 40 years. The entire area is subject to desertification. In the upper part of the image, some dust can be seen blowing over the northwestern lobe of the lake.

 

Desertification and Shrinking Lake Chad

13.3N 14.1E

April 2nd, 2012 Category: Deserts, Environmental Disasters, Lakes

Chad - March 11th, 2012

Fewer than 50 years ago, Lake Chad was bigger in surface area than the country of Israel. Today its surface area is les than a tenth of its earlier size, shrinking 90 percent between 1963 and 2001 from 25,000 square kilometres to under 1,500. Forecasts suggest the lake could disappear altogether within 20 years.

The shrinking of the lake is the result of climate change and overuse, and it is putting at risk the livelihood of the 30 million people who depend on its waters. The lake is bordered by Chad, Niger, Cameroon and Nigeria. Four more countries, the Central African Republic, Algeria, Sudan and Libya, share the lake’s hydrological basin and are therefore also affected by its shrinking.

Villages that used to be thriving lakeside ports are now stranded miles from the water, and have been swallowed by the advancing Sahara desert. Fishers and farmers are struggling to survive. Farmers who rely on lake waters for irrigation are having to move nearer to the water or abandon their activities. Lack of water has caused pasture lands to shrivel up and led to a serious shortage of animal feed, estimated at 46.5 percent in some areas in 2006, resulting in cattle deaths and plummeting livestock production.

 

Estuary of Cross River, Nigeria and Cameroon

4.8N 8.2E

February 2nd, 2012 Category: Rivers

Nigeria and Cameroon - January 1st, 2012

This APM image shows the estuary of the Cross River (native name: Oyono River), the main river in southeastern Nigeria, giving its name to Cross River State. It originates in Cameroon, where it takes the name of the Manyu River.

Over its last 80 km to the sea its flows through swampy rainforest with numerous creeks and forms an inland delta near its confluence with the Calabar River, about 20 km wide and 50 km long between the cities of Oron on the west bank and Calabar, on the east bank, more than 30 km from the open sea. The delta empties into a broad estuary which it shares with a few smaller rivers. At its mouth in the Atlantic Ocean the estuary is 24 km wide. The eastern side of the estuary is in the neighbouring country of Cameroon.

The Cross River forms a boundary between two tropical moist forest ecoregions, the Cross-Niger transition forests which lie west of the river, between the Cross and Niger Rivers, and the Cross-Sanaga-Bioko coastal forests, which lie to the east between the Cross River and the Sanaga River of Cameroon.