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Final Exam - Flashcards

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Class:GEOG 1250 - Weather and Climate
Subject:Geography
University:Bowling Green State University
Term:Fall 2010
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Another word for the wave cyclone Polar Front Cyclone
An Occluded Front When the center of a mature wave cyclone passes to the south
What is the time scale for the life of a mid-latitude cyclone? One week
The polar front separates ______ from ______. cold polar easterlies, warm mid-latitude westerlies
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Meandering in the upper-level winds can lead to major cyclones and anticyclones
Anticyclones are typically associated with clear skies and calm conditions
When upper air diverges... the surface cyclones may form
Mid-latitude cyclones normally bring abrupt changes in... wind, temperature, and clouds
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When does speed divergence occur? When upper-level air speeds up
Which of the following climates would rainfall be most reliable? Af
Most important elements in a climatic description Temperature and precipitation
In ___________, daily temperature ranges usually exceed the annual temp. range Wet tropics
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Most places having an Aw climate experience: a summer maximum of precipitation
Aw vegetation savanna
Approx. what percentage of the earth's land surface is desert & steppe? 30%
*Describe the influence of the ITCZ and the STHP on the precipitation in the Aw climate? Aw: Tropical savannah; dry in the summer, wet in the winter ITCZ impact: low pressure, convergent, & brings a lot of precip in the summer. STHP impact: warm weather and moves down & turns into dry season.
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*Describe causes and distribution of Cs climate. Cs: Mediteranean; dry summer Distribution: latitude between 35 - 40 degrees; West coast only.
On which continent is the marine west coast climate the most extensive? Europe
Mediterranean Climate Dry-summer subtropical climate
Why are the subarctic and tundra climates considered humid? low temperatures results less evaporation
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Which humid climate has a strong winter precipitation? Mediterranean
This climatic type experiences adequate precipitation, warm summers, and very cold winters. Humid Continental
Why does the Sahara Desert exist? Because of the influence of the subtropical high
What influences the Mediterranean climate in the summer? The dry subtropical high
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*What is the primary reason for the existence of the dry subtropical realm? Because the subtropical high pressure system is in the area
*What is the primary cause for the existence of the mid-lat deserts and steppe? Area is far away from the ocean and blocked from the ocean
*Why is the marine west coast climate represented by only slender strips of land in North and South America and why is it very extensive in Western Europe? Larger than both North & South America because of topography. West Coast mountains which go from South to North which locks the moisture. In Europe, there are no mountains that block the moisture because mountains run east to west. 60-70 degree latitude.
*Why is cold-front weather usually more sever than warm-front weather? Because it has a steeper slope compared to the warm-front.
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*Which 2 air masses are most important to the weather of the US east of the Rocky Mts. and why? Winter dominated by cP air mass in the East of the US. Summer dominated by mT in the East of the US.
*cP, cT, mT, and mP cP = cold & dry; mT = warm & moist; cT = dry & warm; mP = cold & moist
*On what bases are air masses classified? Classified based upon temperature (a - active, p - polar, t - tropical, e - equator) and moisture (c - continental-->dry and m - meritime-->wet)
What is the relationship between a front and an air mass? a front separates 2 air masses
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On a weather map, a stationary front is shown... with triangular points on one side and semi-circles on the other side of the front.
The 2 air masses that have the greatest influence on weather conditions in the Midwestern US are: cP & mT
mP air mass is... humid and cold
cT air mass is... warm and dry
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Air-Mass weather When an area is expecting several consecutive days of very constant weather
Doldrums Region where trade winds meet
*Seasonal patterns of precipitation & cause in the Equator A lot of precipitation year round because of the ITCZ system.
Example of a mesoscale wind Sea breeze
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*Seasonal patterns of precipitation and cause of 35 - 40 degrees N. Latitude. Summer: dry because of STHP; Winter: wet because of westerlies the ocean from water to back.
Another name for the subtropical high is... horse latitudes
Offshore Winds blows from land to water
Trade Winds The prevailing winds that blow from the horse latitudes toward the doldrums
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What prevailing wind zone is most of the US situated in? Westerlies
Sahara desert is associated with what pressure belt? Subtropical High (STHP)
*Season patterns of precipitation and cause in 15 degrees latitude (Savanna) Summer: Wet because of ITCZ; Winter: Dry because of STHP
Where do water temperatures rise during an El Nino? The Eastern Pacific
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What season are upper air winds fastest? In the Winter
*Seasonal Patterns of precipitation and cause of Tropic of Cancer dry year round because of STHP
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 Another word for the wave cyclone
Polar Front Cyclone
 An Occluded FrontWhen the center of a mature wave cyclone passes to the south
 What is the time scale for the life of a mid-latitude cyclone?One week
 The polar front separates ______ from ______.cold polar easterlies, warm mid-latitude westerlies
 Meandering in the upper-level winds can lead tomajor cyclones and anticyclones
 Anticyclones are typically associated withclear skies and calm conditions
 When upper air diverges...the surface cyclones may form
 Mid-latitude cyclones normally bring abrupt changes in...wind, temperature, and clouds
 When does speed divergence occur?When upper-level air speeds up
 Which of the following climates would rainfall be most reliable?Af
 Most important elements in a climatic descriptionTemperature and precipitation
 In ___________, daily temperature ranges usually exceed the annual temp. rangeWet tropics
 Most places having an Aw climate experience:a summer maximum of precipitation
 Aw vegetation
savanna
 Approx. what percentage of the earth's land surface is desert & steppe?
30%
 *Describe the influence of the ITCZ and the STHP on the precipitation in the Aw climate?Aw: Tropical savannah; dry in the summer, wet in the winter
ITCZ impact: low pressure, convergent, & brings a lot of precip in the summer.
STHP impact: warm weather and moves down & turns into dry season.
 *Describe causes and distribution of Cs climate.Cs: Mediteranean; dry summer
Distribution: latitude between 35 - 40 degrees; West coast only.
 On which continent is the marine west coast climate the most extensive?Europe
 Mediterranean ClimateDry-summer subtropical climate
 Why are the subarctic and tundra climates considered humid?low temperatures results less evaporation
 Which humid climate has a strong winter precipitation?Mediterranean
 This climatic type experiences adequate precipitation, warm summers, and very cold winters.Humid Continental
 Why does the Sahara Desert exist?Because of the influence of the subtropical high
 What influences the Mediterranean climate in the summer?The dry subtropical high
 *What is the primary reason for the existence of the dry subtropical realm?Because the subtropical high pressure system is in the area
 *What is the primary cause for the existence of the mid-lat deserts and steppe?Area is far away from the ocean and blocked from the ocean
 *Why is the marine west coast climate represented by only slender strips of land in North and South America and why is it very extensive in Western Europe?Larger than both North & South America because of topography. West Coast mountains which go from South to North which locks the moisture. In Europe, there are no mountains that block the moisture because mountains run east to west. 60-70 degree latitude.
 *Why is cold-front weather usually more sever than warm-front weather?Because it has a steeper slope compared to the warm-front.
 *Which 2 air masses are most important to the weather of the US east of the Rocky Mts. and why?Winter dominated by cP air mass in the East of the US. Summer dominated by mT in the East of the US.
 *cP, cT, mT, and mPcP = cold & dry; mT = warm & moist; cT = dry & warm; mP = cold & moist
 *On what bases are air masses classified?Classified based upon temperature (a - active, p - polar, t - tropical, e - equator) and moisture (c - continental-->dry and m - meritime-->wet)
 What is the relationship between a front and an air mass?a front separates 2 air masses
 On a weather map, a stationary front is shown...with triangular points on one side and semi-circles on the other side of the front.
 The 2 air masses that have the greatest influence on weather conditions in the Midwestern US are:cP & mT
 mP air mass is...humid and cold
 cT air mass is...warm and dry
 Air-Mass weatherWhen an area is expecting several consecutive days of very constant weather
 DoldrumsRegion where trade winds meet
 *Seasonal patterns of precipitation & cause in the EquatorA lot of precipitation year round because of the ITCZ system.
 Example of a mesoscale windSea breeze
 *Seasonal patterns of precipitation and cause of 35 - 40 degrees N. Latitude.Summer: dry because of STHP; Winter: wet because of westerlies the ocean from water to back.
 Another name for the subtropical high is...horse latitudes
 Offshore Windsblows from land to water
 Trade WindsThe prevailing winds that blow from the horse latitudes toward the doldrums
 What prevailing wind zone is most of the US situated in?Westerlies
 Sahara desert is associated with what pressure belt?Subtropical High (STHP)
 *Season patterns of precipitation and cause in 15 degrees latitude (Savanna)Summer: Wet because of ITCZ; Winter: Dry because of STHP
 Where do water temperatures rise during an El Nino?The Eastern Pacific
 What season are upper air winds fastest?In the Winter
 *Seasonal Patterns of precipitation and cause of Tropic of Cancerdry year round because of STHP
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