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20-11-2017, 09:58 PM

I need an essay in kannada language about heavy rainfall and less rainfall

jaseela123d · 21-11-2017, 10:16 AM

Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then become heavy enough to fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on Earth. It provides the right conditions for many types of ecosystems, as well as water for hydroelectric power plants and crop irrigation.

The main cause of rain production is the humidity that moves along the three-dimensional zones of temperature and contrasts of humidity known as meteorological fronts. If there is sufficient humidity and upward movement, precipitation falls from convective clouds (those with a strong vertical upward movement) such as cumulonimbus (thunder clouds) that can be organized in narrow bands of rain. In mountainous areas, heavy precipitation may occur where the upward flow is maximized within the windward sides of the terrain at elevation, forcing the humid air to condense and fall as rain along the sides of the land. mountains On the leeward side of the mountains, desert climates may exist due to dry air caused by the downward flow that causes heating and drying of the air mass. The movement of the monsoon depression, or zone of intertropical convergence, brings rainy seasons to savanna climates.

The urban heat island effect causes an increase in precipitation, both in quantity and intensity, to leeward of the cities. Global warming is also causing changes in the pattern of precipitation worldwide, including the wetter conditions in eastern North America and the drier conditions in the tropics. Antarctica is the driest continent. The average annual global precipitation on the earth is 715 mm (28.1 in), but in the whole Earth it is much higher at 990 mm (39 in). Climate classification systems, such as the Köppen classification system, use average annual precipitation to help differentiate between different climate regimes. The rain is measured with rain gauges. The weather radar can estimate the amounts of rain. The presence of rain on other planets is also known or suspected, where it may be composed of methane, neon, sulfuric acid or even iron instead of water.

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