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2009+1F91+-+Ch+9+-+Low-Latitude+Climates+-+DONE[1]

2009+1F91+-+Ch+9+-+Low-Latitude+Climates+-+DONE[1] -...

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Chapter 9 Low­Latitude Climates GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected]
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Week of Topic Readings Laboratory September 14 Course Introduction Chapter 1 No Labs this week September 21 Introducing Physical Geography Chapter 1 / 2 Lab 1 (odd) September 28 Earth as Rotating Planet Chapter 2 / 3 Lab 1 (even) October 5 Global Energy System Chapter 3 / 4 Lab 2 (odd) October 12 Temperature Cycles Chapter 4 No Labs this week October 19 Winds and Circulation Chapter 5 Lab 2 (even) October 26 Moisture and Precipitation/ Quiz Chapter 6 Lab 3 (odd) November 2 Weather Systems Chapter 7 Lab 3 (even) November 9 Scope of Climate Chapter 8 Lab 4 (odd) November 16 Low­Latitude Climate Chapter 9 Lab 4 (even) November 23 Mid & High­Latitude Climate Chapter 10 November 30 Review Review All Labs Due!! GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected]
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Situated between the tropics of Cancer and Capricorn, the low­ latitude climates occupy the entire equatorial zone (10­15 deg. N and S) and part of the sub­tropical zone (25­35 deg. N and S). Overview Includes the intertropical convergence zone (ITCZ), the belts of the tropical easterlies (northeast and southeast trade winds) and a large proportion of the oceanic subtropical high­pressure belt. GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected]
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The low­latitude climate is highly variable with areas that are extremely moist, to extremely dry. Overview GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected]
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Overview In the wet­equatorial climate zone, rainfall is abundant year round (e.g. Amazon Basin) In the wet­dry tropical climate zone, rainfall is abundant for only part of the year, and it is quite dry during the non­rainy season (e.g. Caribbean Islands) GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected]
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The annual movement of the Sun north and south of the equator, and the corresponding shift in circulation that accompanies it, is responsible for the seasonal distribution of precipitation at these latitudes. Overview A zone of convective precipitation moves with the Sun as it travels between its summer solstice position above the Tropic of Cancer (June 21) bringing a short wet season for 2­3 months at latitudes around 20 deg. N. GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected]
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Overview Storms (often severe) follow the Sun as it moves towards its winter solstice position at the Tropic of Capricorn (Dec. 21). GEOG 1F91 – Physical Geography – Low­Latitude Climates [email protected] The annual movement of the Sun north and south of the equator, and the corresponding shift in circulation that accompanies it, is responsible for the seasonal distribution of precipitation at these latitudes.
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Near the equator, uplifting warm air along the ITCZ provides year­round precipitation.
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