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In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls from clouds due to gravitational pull. [1] The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail.
Precipitation occurs when evapotranspiration takes place and local air becomes saturated with water vapor, and so can no longer maintain the level of water vapor in gaseous form, which creates clouds. This occurs when less dense moist air cools, usually when an air mass rises through the atmosphere to higher and cooler altitudes.
Summer rainfall across the continent evaporates completely into the warm atmosphere, leaving winter precipitation to be the source of groundwater for Europe. [36] Mesoscale rain systems during the rainy season track south and eastward over the Mediterranean, with western portions of the sea experiencing 20 percent more rainfall than eastern ...
Idealised depiction (at equinox) of large-scale atmospheric circulation on Earth Long-term mean precipitation by month. Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from ...
The atmosphere serves as a protective buffer between the Earth's surface and outer space, shields the surface from most meteoroids and ultraviolet solar radiation, keeps it warm and reduces diurnal temperature variation (temperature extremes between day and night) through heat retention (greenhouse effect), redistributes heat and moisture among ...
The Pacific Northwest will also be impacted by the atmospheric river, with waves of rain and snow forecast to hit the area. The bulk of the precipitation is forecast through Friday night. The ...
SAN FRANCISCO – A series of atmospheric river events promise to deliver heavy precipitation across Northern California and the Pacific Northwest in the form of valley rain and mountain snow with ...
Sulfuric acid rain in the atmosphere of Venus evaporates before reaching the ground due to the high heat near the surface. [2] Similarly, virgae happen on gas giant planets such as Jupiter . [ citation needed ] In September 2008, NASA's Phoenix lander discovered a snow variety of virga falling from Martian clouds.