clouds and precipitation
TRANSCRIPT
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Clouds and precipitationLauren Dreghorn-carver
MeteorologyMrs.Joseph/mrs.Neisen
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Adiabatic temperature changes and expansion and cooling
Air expand-it cools and air compressed-it warms.Rate of adiabatic cooling or heating in unsaturated
air is the dry adiabatic rate.When it is saturated air its called wet adiabatic rate
and that dry's slower then the dry adiabatic.
link: http://apollo.lsc.vsc.edu/~wintelsw/MET1010LOL/chapter06/
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Orographic liftingfacts http://www.crh.noaa.gov/
unr/?n=weatherIt occurs when elevated
terrainsMountains act as a
barriers air flow that is forcing air to ascend
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Frontal wedging facts
http://www.geo.hunter.cuny.edu/~tbw/wc.notes/4.moisture.atm.stability/frontal_wedging.htm
It’s a boundary between colliding masses of warm and cold air
It occurs at a front in which cold dense air acts as a barrier
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convergencefacts http://ww2010.atmos.uiuc.edu/
(Gh)/guides/mtr/cld/dvlp/cnvrg.rxml
Its lifting of airResults from air in the
lower atmosphereThat makes it flow
together
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Localized convection lifting•Lifting occurs when unequal heating of earths surface•It warms a pocket or air more then the surrounding air•Lowering the pocket of air density
Linkhttp://www.richhoffmanclass.com/chapter4.html
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Stability (density differences and stability and daily weatherfacts
http://www.vietnamonline.com/destination/hanoi/weather-by-month/hanoi-weather-in-august.html
Tend to remain the original position when unstable air rises
Its most stable condition Is when air temp. increase
When that happens it is called temperature inversion
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Condensation
factshttp://keep3.sjfc.edu/students/kes00898/e-port/condensation%20page%20for%20unit.html
For it to form it needs to have dew,fog,or clouds and the air must be saturated
Air above ground turn into tiny particulars matter that is called condensation nuclei
It serves as a surface for a water vapor
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Types of cloudsfacts http://eo.ucar.edu/
webweather/cloud3.htmlThey are classified how
they are classified is their shape and height
They are cirrus and cumulus and stratus
Cirrus –white high thin .cumulus-round individual ,stratus-sheets
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High cloudsfact http://eo.ucar.edu/kids/
sky/clouds3.htmThree family clouds
make up the high clouds cirrus and cirrostratus and cirrocumulus
All high clouds are thin and white and are often made up of ice crystals
They are not considered precipitation makers
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Middle cloudsfact http://www.bigbranch.net/
middle%20clouds.htmThey are larger and
denser. They are part of the
altocumulusLight snow or drizzle
will accompany them
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Low cloudsfacts http://eo.ucar.edu/kids/
sky/clouds1.htm3 members –stratus and
stratocumulus and nimbostratus
Fog like layer of cloudsNimbostratus are the
stable conditations
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Clouds of vertical developmentfacts
http://www.free-online-private-pilot-ground-school.com/Aviation-Weather-Principles.html
Some of the clouds do not fit into the height categories
They have their basesThe clouds are related to
each other
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Fog (by cooling and by evaporation)facts
http://epod.usra.edu/blog/2006/03/advection-fog-in-new-hampshire.html
Physically there is no difference between fog and a clound
Fog can form on cool clear and calm nights
When cool air moves across warm water it may evaporate
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Cold cloud precipitation(bergeron process)facts
http://nanopatentsandinnovations.blogspot.com/2010/06/amount-of-dust-pollen-matters-for-cloud.html
Bergeron process is a theory
It relates to precipitation Super cooled and
freezing nuclei and the different saturation levels of ice and liquid water
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Warm cloud Fact http://www.frangardino.com/clouds/
index.htmlAir saturated with
respect to water it is super saturated with respect to ice
Collision coalescence is a theory of raindrop formation in warm clouds
Large clouds collide and join together with smalle droplets to form raindroplets
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Rain and snowFacts
http://fineartamerica.com/featured/lake-rain-and-snow-darryl-kravitz.html
Light fluffy snow makes individual 6 sided crystals
Temps warmer then -5 ice crystals go into large clumps
Snowfalls of the snowflakes are heavy ,are high moisture contents
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Sleet glaze and hailfacts
http://scienceray.com/earth-sciences/the-mysteries-of-earth-science-rain-snow-and-hail/
Sleet-small particles of clear to translucent
Glaze-also knew as freezing rain it happens when super cooled raindrops
Hail- produce cumulonimbus cloud hailstones are small ice pellets but they get larger s they collect super cooled water cooled
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