GEO FINAL NOTES - /9/10 Lecture 17 Earths Climates Dashonda...

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11/2/10-11/4/10—11/9/10-11/11/10 Lecture 17: Earth’s Climates Dashonda Haygood Köppen based his scale of climate on the amount of vegetation in each region. Climate is the type of weather expected in a particular region. According to the map, the yellow region, subtropical deserts, are the most prevalent (Sahara). The Northern Hemisphere is the only part of the world that has Subpolar (D climates) (Canada). Near the equator, between 23° North and 23° South, are the Tropics and (A climates). THE ITCZ MOVES NORTH FOR THE WINTER THE ITCZ MOVES SOUTH FOR THE SUMMER 1. Tropical Wet Climate (Af) is seen in [Iquitos, Perú], which receives about 120 in. of rain because it is located under the ITCZ. (Tropical Wet all year long). -In June and July, dry season, when the ITCZ is North of Perú, therefore it receives less precipitation. (Af) Winter WET, Summer DRY-Perú and Ecuador. South of Equator. Humidity is VERY CONSTANT; example is 78.8° F, year round, which never changes because the Earth is usually tilted to the Sun, except in Equinoxes. There are NO FRONTS at the ITCZ and but Cn clouds reflect solar radiation. Does not cool of a lot at night because of there are cloudy evenings. Why does it usually rain in the afternoons? Other than Convergence at the ITCZ, it the afternoons, heat rises and there is Localized Convection. (ALWAYS mT). 2. Tropical Wet and Dry Climate (Aw) is seen in [Ciudad Bolivar, Venezuela], which is located North of the Equator. (In June and July, there is more precipitation and Jan. Feb. and March are dry).
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11/2/10-11/4/10—11/9/10-11/11/10 [Precip. goes UP, Temp. goes DOWN, more clouds] [Precip. goes DOWN, Temp. goes UP] (Aw) Winter DRY, Summer WET- Ciudad Bolivar, VEN. North of Equator. The (A climates) are very prevalent in South America. (A climates) moves POLEWARD. Why does the Dominican Republic receive more Precip. than Haiti (same lat.)? Orographic Lifting 3. Monsoonal (Am) is seen in South East Asia, in such places as the coast of India, Myanmmar, Thailand and [Bangladesh], while they are located at HIGH LATITUDES, they are still affected by the ITCZ. SUPER WET SUMMER in JUNE AND JULY, and SUPER DRY WINTER in JAN. FEB. MAR. 4. Subtropical Desert (Bwh) is seen in [Yuma, AZ] in the western United States, where temperatures reach 100° or more and receive very little precip. Arid climates dominate the world and are hot and dry year round, and there is a DEFICIT in the amount of moisture in the soil. [B climates are known as the DRY Climates.] Examples: Yuma, AZ; Las Vegas, NV; México; the Gulf of California (Cabo); the Sahara desert in Africa; Arabian desert in the Middle East; Kalahari desert; most of Australia; and the Atacama desert in South America, the Evaporation EXCEEDS the Precipitation. These Subtropic Deserts are under Subtropic High Pressure Zones, Air mass (cT).
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