Many deserts are formed by; mountains blocking the path of precipitation to the desert (on the lee side of the mountain). Deserts are often composed of and surfaces. called and stony surfaces called surfaces compose a minority of desert surfaces. Exposures of terrain are typical, and reflect minimal soil development and sparseness of The soil is rocky because of the low chemical weathering, and the relative absence of a fraction.
Deserts are part of a wide classification of regions that, on an average annual basis, have a moisture deficit (i.e. they can potentially lose more than is received). Deserts are located where vegetation cover is sparse to almost nonexistent. Deserts take up about one fifth (20%) of the Earth's land surface Hot deserts usually have a large and seasonal temperature range, with high daytime temperatures, and low nighttime temperatures (due to extremely low In hot deserts the temperature in the daytime can reach 45 °C/113 °F or higher in the summer, and dip to 0 °C/32 °F or lower at nighttime in the winter. Water vapor in the atmosphere acts to trap long wave radiation from the ground, and dry desert air is incapable of blocking during the day (due to absence of clouds) or during the night. Thus, during daylight most of the s heat reaches the ground, and as soon as the sun sets the desert cools quickly by radiating its heat into space.
No comments:
Post a Comment