the sahara mostly consists of two types of climates desert and mountains.
the sahara mostly consists of two types of climates desert and mountains.
the sahara mostly consists of two types of climates desert and?
mountains
the average annual rainfall ranges from very low in the northern and southern fringes of the desert to nearly non-existent over the central and the eastern part. the thin northern fringe of the desert receives more winter cloudiness and rainfall due to the arrival of low pressure systems over the mediterranean sea along the polar front, although very attenuated by the rain shadow effects of the mountains and the annual average rainfall ranges from to . for example, biskra, algeria, and ouarzazate, morocco, are found in this zone. the southern fringe of the desert along the border with the sahel receives summer cloudiness and rainfall due to the arrival of the intertropical convergence zone from the south and the annual average rainfall ranges from to . for example, timbuktu, mali and agadez, niger are found in this zone. the vast central hyper-arid core of the desert is virtually never affected by northerly or southerly atmospheric disturbances and permanently remains under the influence of the strongest anticyclonic weather regime, and the annual average rainfall can drop to less than . in fact, most of the sahara receives less than . of the of desert land in the sahara, an area of about (about 31% of the total area) receives an annual average rainfall amount of or less, while some (about 17% of the total area) receives an average of or less. the annual average rainfall is virtually zero over a wide area of some in the eastern sahara comprising deserts of: libya, egypt and sudan (tazirbu, kufra, dakhla, kharga, farafra, siwa, asyut, sohag, luxor, aswan, abu simbel, wadi halfa) where the long-term mean approximates per year. rainfall is very unreliable and erratic in the sahara as it may vary considerably year by year. in full contrast to the negligible annual rainfall amounts, the annual rates of potential evaporation are extraordinarily high, roughly ranging from per year to more than per year in the whole desert. nowhere else on earth has air been found as dry and evaporative as in the sahara region. however, at least two instances of snowfall have been recorded in sahara, in february 1979 and december 2016, both in the town of ain sefra.
sahara
climates in the state are grouped by precipitation and average temperatures into three major groups. the semi-arid climate is characterized by the fact that evaporation often exceeds precipitation. most of the vegetation in these areas is arid grassland with desert plants such as nopal. these climates cover about forty percent of the state, mostly in the north. semi-arid temperate regions are found in the municipalities of san felipe, san diego de la unión, san luis de la paz, part of dolores hidalgo and san josé de iturbide, where precipitation varies between 400 and 500 mm and the average temperature is between 16 and 18 °c. semi-arid semi hot climates can be found north of dolores hidalgo, around león and in areas near celaya. in these municipalities, rainfall averages between 600 and 700 mm and the average annual temperature is between 18 and 20 °c. temperate climates are judged by the presence of holm oak and pine forest, pine forests and/or pine forests with meadows. humidity varies in these forest regions. temperate semi-moist areas are mostly found in the southeast municipalities of apaseo, coroneo and jerécuaro and in the center of the state. precipitation varies from 600 to 700 mm and the average temperature is between 16 and 18 °c. temperate and somewhat humid climates have rainfall averages of between 700 and 800 mm, with temperatures between 16 and 18 °c. these can be found in pénjamo, coroneo, jerécuaro and parts of guanajuato (municipality) and dolores hidalgo. temperate climates with the most humidity are found in the santa rosa and municipality of guanajuato. these have rainfall averages of over 800 mm and average temperatures of under 16 °c. hot and moist climates in the state have temperatures ranging from 18 to 22 °c and are associated with tropical rainforest, with some grassland. these climates are subdivided into two types, one that receives less rainfall with a significant dry season and the other which is wetter. the drier type is found in abasolo, irapuato, salamanca and romita. in total, these hot and relatively moist climates can be found in about 40% of the state.
guanajuato