Clouds and Precipitation

By Haley Evans

Adiabatic Temperature Changes And Expansion And Cooling

• The temperature will change even if the heat is not added or going away

• Wet adiabatic is slower than dry adiabatic• The cooling and heating is unsaturated air

which is called dry adiabatic rate.

Orographic Lifting

• This is the first mechanisms that causes the air to rise

• The mountains will act as barriers for the air to flow

• The force will cause the air to go up.

Frontal Wedging

• This is the second mechanism that causes the air to rise

• The front is where the warm and cool air can go

• Warmer air will rise

Convergence

• This is the 3rd mechanism• This is air that is lifting• The air in the lower atmosphere coming

together

http://en.wikipedia.org/wiki/Cloud

Localized Convective Lifting

• This is the 4th mechanism• Unequal air heats up more than the air that is

being surrounded• The air only gets a portion of it

https://www.meted.ucar.edu/sign_in.php?go_back_to=http%253A%252F%252Fwww.meted.ucar.edu%252Ffire%252Fs290%252Funit11%252Fnavmenu.php%253Ftab%253D1%2526page%253D5.1.0

Stability(Density Differences & Stability and Daily Weather)

• Stable air stays where it is at• None stable air sometimes rise• When the air is most stable is when the air

temperature rises with the height

http://www.sciencephoto.com/media/3476/view

Condensation

• When there is dew, clouds, or fog the air has to be saturated

• This happens in the air above the ground• There must be a surface for water-vapor

condensation

http://www.sciencephoto.com/media/3476/view

Types Of Clouds

• The Cirrus cloud is high in the sky, has a white color and the cloud is thin. The clouds will appear to feel very soft.

• The Cumulus cloud are round and the base is flat.

• The Stratus cloud covers the whole sky or sometimes will cover most of the sky.

http://boatsafe.com/kids/weather1.htm

High Clouds

• There are 3 different types of clouds. • They are Cirrus, Cirrostratus, Cirrocumulus.• They are the same because they all have

crystals, their color is white, and the cloud is thin.

http://www.bigbranch.net/high%20clouds.htm

Middle Clouds

• Middles clouds have a whitish or grayish color to them.

• There are only two different clouds.• There called’ Middle clouds’ because they are

2000-6000 meters apart.http://www.beijinghikers.com/v2/resources/news/hiking-photos-switchback-great-wall-2009-12-16/

Low Clouds

• There are 3 different kinds of clouds• They are Stratus, Stratocumulus, and

Nimbostratus.• Nimbostratus is the cloud that’s the main one

that makes rain.

http://www.capetownskies.com/clouds-low.htm

Clouds of Vertical Development

• Some of the clouds don’t even have the height that they mentioned.

• All of the clouds are related and have the same unstable air.

• Cumulonimbus clouds would make rain or thunderstorms.

http://en.wikipedia.org/wiki/Cloud

Fog( By Cooling And By Evaporation)

• Fog and clouds are the same.• When there is moist air it will become fog.• When the warm air moves over warm water it

will evaporate.

http://en.wikipedia.org/wiki/File:Dense_Tule_fog_in_Bakersfield,_California.jpg

Cold Cloud Precipitation (Bergeron Process)

• Water that is liquid states below 0 degrees is called’ super cooled’.

• The super cooled water will freeze when it touches a solid.

• There are different levels of ice and liquid.

http://articles.pvsolarsalestraining.com/articles.php?EffectsofHailonPVSolarPanels

Warm Cloud Precipitation( Collision-Coalescence Process)

• When air is saturated to water, it is called ‘ supersaturated’.

• Warm clouds come together with large cloud droplets.

• Then the cloud droplets come together with smaller droplets and form raindrops.

http://www.frangardino.com/clouds/index.html

Rain and Snow

• When the surface temperature is 4 degrees Celsius then snowflakes will melt.

• Then the snow turns into rain before it hits the ground

• Six sided ice crystals will form when there is low temperature

http://kohd.com/page/213587

Sleet, Glaze, and Hail

• Glaze is also freezing rain• Sleet is transparent ice • Hail will be produce in the Cumulonimbus

clouds

http://articles.pvsolarsalestraining.com/articles.php?EffectsofHailonPVSolarPanels

The End!