How much water vapor a parcel of air can contain before it becomes saturated (100% relative humidity) and forms into a cloud (a group of visible and tiny water and ice particles suspended above the Earth's surface) depends on its temperature.
- RainThis genus type is a heavy, towering, cumulonimbiform mass of free-convective cloud with a dark-grey to nearly black base and a very high top in the form of a mountain or huge tower. Cumulonimbus can produce thunderstorms, local very heavy downpours of rain that may cause flash floods, and a variety of types of lightning including cloud-to-ground that can cause wildfires. Other convective severe weather may or may not be associated with thunderstorms and include heavy snow showers, hail, strong wind shear, downbursts, and tornadoes. Of all these possible cumulonimbus-related events, lightning is the only one of these that requires a thunderstorm to be taking place since it is the lightning that creates the thunder. Cumulonimbus clouds can form in unstable airmass conditions, but tend to be more concentrated and intense when they are associated with unstable cold fronts.
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Cumulonimbus cloud
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Cumulonimbus (from Latin cumulus, "heaped" and nimbus, "rainstorm") is a dense, towering vertical cloud, typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents.
Rain: precipitation that reaches the ground as liquid, often in a precipitation shaft.
Virga
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In meteorology, a virga, also called a dry storm, is an observable streak or shaft of precipitation falling from a cloud that evaporates or sublimates before reaching the ground.
Virgae can cause varying weather effects, because as rain is changed from liquid to vapor form, it removes significant amounts of heat from the air due to water's high heat of vaporization.
Water cycle
0 linksBiogeochemical cycle that describes the continuous movement of water on, above and below the surface of the Earth.
Biogeochemical cycle that describes the continuous movement of water on, above and below the surface of the Earth.
A huge concentration of these droplets over a large area in the atmosphere become visible as cloud, while condensation near ground level is referred to as fog.
Precipitation: Condensed water vapor that falls to the Earth's surface. Most precipitation occurs as rain, but also includes snow, hail, fog drip, graupel, and sleet. Approximately 505000 km3 of water falls as precipitation each year, 398000 km3 of it over the oceans. The rain on land contains 107000 km3 of water per year and a snowing only 1000 km3. 78% of global precipitation occurs over the ocean.
Warm front
0 linksDensity discontinuity located at the leading edge of a homogeneous warm air mass, and is typically located on the equator-facing edge of an isotherm gradient.
Density discontinuity located at the leading edge of a homogeneous warm air mass, and is typically located on the equator-facing edge of an isotherm gradient.
As it cools, any water vapor that is present will condense and form extensive cloud cover.
If the air mass is relatively stable, rainfall will increase until the front reaches the location, at which time the clouds can extend all the way to the earth’s surface as fog.
Uranus
0 linksSeventh planet from the Sun.
Seventh planet from the Sun.
It has the coldest planetary atmosphere in the Solar System, with a minimum temperature of 49 K, and has a complex, layered cloud structure with water thought to make up the lowest clouds and methane the uppermost layer of clouds.
Scientists also believe that rainfalls of solid diamonds occur on Uranus, as well as on Jupiter, Saturn, and Neptune.
Antu (goddess)
0 linksBabylonian goddess.
Babylonian goddess.
According to the Akkadian pantheon, clouds were Antum's breasts and that rain was her breast milk.