GEOL105 Lecture Notes - Lecture 9: Intertropical Convergence Zone, Bhola District, Thermosphere
31 Oct 2016
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Latitude: 0 degrees at equator and north or south goes up to 90 degrees at the poles (low, mid, high: heat and water. Weather and geology: weather is due to movement of energy and mass in atmosphere, drives mass-wasting, oods, soil erosion, weather patterns are part of climate. >thermosphere > exosphere atmosphere is densest near surface: most weather is in the troposphere. Global circulation: averages 10 miles or 16 km thick rising air, arctic/antartic circles, equator sinking air at, poles, mid-latitudes. Jet streams: are narrow air currents exist between troposphere and stratosphere form along boundaries of global cells: may form meanders or waves steer fronts and storms, polar jet:highest/lowest, subtropical jet:following polar jets. High-pressure area: air converges aloft sinks: diverges near surface, winds blow out clockwise in northern hemisphere. Low-pressure area: fair weather, light winds near center concentrated areas air converges near surface rises: diverges aloft, winds blow in counter-clockwise in northern hemisphere strong winds and precipitation near center storms.
