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More than half of the desert area is hyper-arid and virtually rainless, with an average annual precipitation below 50 millimetres (2.0 in) and many consecutive years may pass without any rainfall. The south of the Sahara Desert, along the boundary with the hot semi-arid climate (BSh) of the Sahel, receives most of its annual rainfall during the ...
When the North African Monsoon is at its strongest, annual precipitation and consequently vegetation in the Sahara region increase, resulting in conditions commonly referred to as the "green Sahara". For a relatively weak North African Monsoon, the opposite is true, with decreased annual precipitation and less vegetation resulting in a phase of ...
In full contrast to the negligible annual rainfall amounts, the annual rates of potential evaporation are extraordinarily high, roughly ranging from 2,500 millimetres (100 in) per year to more than 6,000 millimetres (240 in) per year in the whole desert. [27] Nowhere else on Earth has air been found as dry and evaporative as in the Sahara region.
A view of lakes caused by heavy rainfall between sand dunes in the desert town of Merzouga, near Rachidia, southeastern Morocco on October 2, 2024.
An extratropical cyclone over the Sahara Desert drenched parts of Morocco and Algeria – bringing up to a year’s worth of rain to some areas. 🌧️ @nasa’s Terra satellite captured ...
Rain forests are characterized by high rainfall, with definitions setting minimum normal annual rainfall between 1,750 millimetres (69 in) and 2,000 millimetres (79 in). [5] A tropical savanna is a grassland biome located in semi-arid to semi- humid climate regions of subtropical and tropical latitudes, with rainfall between 750 millimetres (30 ...
But anywhere from 3 to 8 inches of rain has fallen in the same timeframe this year, according to CPC data. This excessive rainfall caused devastating flooding in Chad.
Climate zones of Africa, showing the ecological break between the Sahara Desert (red), the hot semi-arid climate of the Sahel (orange) and the tropical climate of Central and Western Africa (blue). Southern Africa has a transition to subtropical and temperate climates (green and yellow), and more desert or semi-arid regions, centered on Namibia ...