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Surface winds spiraling out of the south polar high

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Surface winds spiraling out of the south polar high and towards the Equator come under the influence of the Coriolis force. 12. Which two pressure belts are typically associated with cloud formation and precipitation? Why? 13. Which two pressure belts are typically associated with clear skies with minimal precipitation? Why? 14. Sketch an ideal Earth (without seasons or ocean-continent features) and its global wind system. Draw and label the following latitude belts: 0° (equator), 30°N/S, 60°N/S, and 90°N/S . Draw and label the following pressure belts on your sketch: equatorial trough (equatorial lows), subtropical highs, subpolar lows and polar highs . Draw and label the following wind belts on your sketch: northeast trade winds, southeast trade winds, midlatitude westerlies, and polar easterlies .
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15. What are semi-permanent pressure centers? How do they differ between winter and summer? What causes these changes? They are apparent in the winter but not in the summer. 16. List examples of semi-permanent high pressure and low pressure centers. High Pressure Low Pressure Siberian High Aleutian Low North American High Icelandic Low Beaufort High 17. Describe how the winter and summer monsoon is established in Southeast Asia. How does the migration of pressure centers help create monsoons? What causes the change in pressure? In the winter monsoon, dry conditions prevail as cold, descending air is situated over the continent. In addition, there is a strong outflow of dry, continental air from the high pressures situated over China and India, leading to northeasterly flow over India and the Middle East and a northwesterly flow over china and Southeast Asia. In the summer monsoon, the inspiraling of warm humid air from the Indian ocean and the southwestern Pacific moves into the continental low-pressure system, producing southewesterlies over India and southeasterlies over Indochina and China. This produces convergence. The convergent airflow and subsequent uplift of the surface air produces strong adiabatic cooling and heavy rainfall in southeastern Asia during the summer. 18. Describe the North American Monsoon. How does it differ from the Asian Monsoon? The North American Monsoon: summer, there is a tendency for warm, moist air originating in the Gulf of Mexico to move northward across the central and eastern part of the US. Winter, air flow pattern changes and dry, continental air from Canada moves south and east, reducing precipitation.
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19. Monsoons typically occur when the ITCZ fluctuates northward and southward in the equatorial and tropical regions. ( True / False) GE101 – Natural Environment: The Atmosphere Study Guide Worksheet Lecture 11 – Air Masses and Fronts Complete the following worksheet using the Lecture 11 slides and 218-232 in the textbook. 1. Air masses are defined by their temperature and moisture characteristics. ( True / False) 2. Air masses are much larger in their vertical dimension compared to their horizontal dimension. (True / False ) 3. Briefly describe how and from where air masses acquire their characteristics.
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