Water levels there remained below the 1900–2010 mean and far below what it was in the 1960s.The region has a short rainy season, and changes in rainfall amounts can greatly affect the water supply. There is evidence that groundwater in aquifers is relatively close to the surface and may be “recharging“ parts of the lake. It is economically very important, providing water to more than 20 million people living in the four countries which surround it — Chad, Cameroon, Niger and Nigeria. Okonkwo and colleagues think a transition of the AMO from a cold (dry) phase to a warmer (wet) phase has played a role. big alpha lake by far best place ever 10/10 would go there again i alredy have been there 65 times perfect for hiding dead bodies and swims with the family the brown colour makes it unique wouldent buy the tour the if you are a real chadian then you dont go on boat you swim. There are eight member governments—i.e., Cameroon, Chad, Niger, Nigeria, Algeria, the Central African Republic, Libya, and Sudan—chosen for their proximity to Lake Chad.

Nestled in a low spot within a huge basin in west-central Africa is an isolated blue dot: That’s Lake Chad. Lake Chad is the principal life source of the Sahel, a semiarid band that spans the width of Africa and separates the Sahara, in the north, from the savanna, in the south. The desert appears tan, wetlands are green, and open water is blue.The black and white 1963 image is from the film-based Argon reconnaissance satellite program, declassified in the 1990s.Oct. The organization's secretariat is located in N'Djamena, Chad.

Most precipitation in the Sahel falls during the peak of a short rainy season from July through September.

A This image series shows the location of the Chari River delta on the southern end of Lake Chad, along with increasing amounts of wetland.Oct. During an average rainy season, the water level in the lake is typically 5–8 meters deep, although it has gone through many wet and dry climatic regimes for thousands of years when water levels were much higher or lower than normal. Years with little precipitation can wreak havoc on the water supply.Extreme swings in Lake Chad’s water levels are not new. The Earth Observatory is part of the “But we suspect that the minimum water level observed in the southern pool (about 279 meters) is permanent, as it is directly connected to the aquifer.” Doctoral research by Churchill Okonkwo (while he was at Howard University) shows that the late 1960s through the early 1970s marked a turning point in the response of Sahel rainfall to two of Earth’s climate cycles—the NASA Earth Observatory charts by Joshua Stevens, using data provided by Churchill Okonkwo.Okonkwo and colleagues showed that in the early 1970s, the AMO was in its so-called “cold phase,” meaning that oceanic and atmospheric circulation patterns shifted in such a way that the Sahel received less rain. 1, p. 24–25, available online at Schneider, S.R., McGinnis, D.F., Jr., and Stephens, G., 1985, Monitoring Africa’s Lake Chad basin with Landsat and NOAA satellite data: International Journal of Remote Sensing, v. 6, no. It is located mainly in the far west of Chad… 31, 1963, Argon satellite photograph — Lake ChadJanuary 1973, Landsat 1 (path/row 198–199/50–51) — Lake ChadJanuary 1987, Landsat 5 (path/row 184–186/50–51) — Lake ChadMay 2003, Landsat 7 (path/row 184–186/50–51) — Lake ChadMay 2013, Landsat 8 (path/row 184–186/50–52) — Lake ChadMay–June 2018, Landsat 8 (path/row 184–186/50–52) — Lake ChadLake Chad was once the sixth largest lake in the world, but prolonged drought and increased water use have shrunk the lake dramatically. The first was acquired in 1963 with a camera onboard a reconnaissance satellite from the By the 1970s, change was underway. The situation has created a fertile environment for the terrorist organisation Boko Haram to recruit vulnerable and unemployed young people, further deepening the crisis. In the last 1,000 years, according to fossil evidence, the lake probably dried out a half-dozen times. L ake Chad is a hydrological miracle – a life-giving, freshwater lake in the Sahara desert. Lake Chad sits within the Sahel, a semiarid strip of land dividing the Sahara Desert from the humid savannas of equatorial Africa.The Chad Basin spans more than 2.4 million square kilometers, and is bordered by mountain ranges. For more than a decade, severe droughts plagued the African Sahel. Landsat will continue to provide information about Lake Chad’s changes, its infrared imaging capability accurately delineating land, water, and wetland.Asante, K.O., Artan, G.A., Pervez, S., and Rowland, J., 2008, A linear geospatial streamflow modeling system for data sparse environments: International Journal of River Basin Management, v. 6, no.

1, p. 59–73.ScienceDaily, 2001, Africa’s Lake Chad shrinks by 20 times due to irrigation demands, climate change: ScienceDaily, available online at ScienceDaily, 2012, Lake Chad—Inhabitants adapt to lower water levels: ScienceDaily, available online at UNEP, 2004, Lake Chad Basin—GIWA Regional assessment 43: Fortnam, M.P. The resulting reduction to Lake Chad is visible in this triptych of images captured by The images show the lake in 1973, 1976, and 1979, a time of great transition and decline in the lake extent. Lake Chad is located in the far west of Chad and the northeast of Nigeria. Earthshots: Satellite Images of Environmental ChangeOct. Abstract: Africa’s Lake Chad is the convergence point of a complex humanitarian disaster courtesy of violence, climate change, and remote, ungoverned areas. Parts of the lake also extend to Niger and Cameroon. The Komadougou-Yobe River, which has become a seasonal river, enters the northern pool but contributes to the lake only in rainy seasons. The northern pool is irregularly flooded and contains a series of sand dune islands. 16, 2017, Landsat 8 (path/row 185/50) — northern Lake ChadDec. The Lake Chad Basin Commission (LCBC or CBLT in French) is an intergovernmental organization that oversees water and other natural resource usage in the basin. In years when there was not enough inflow to spill over the barrier, the northern lobe stayed relatively dry.



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