ATOC 1050 chapter 25 notes

ATOC 1050 chapter 25 notes - ATOC 1050, Rauber, et al....

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ATOC 1050, Rauber, et al. Chpt. 25 Drought 1. Overview: a. Drought onset and recovery usually slow; temporal and areal scales longer and larger than most natural hazards’ b. Over 150 definitions of drought c. Droughts can be associated with the displacement of midlatitude storm tracks due to expansion Westerlies into midlatitudes or to persistence and growth of areas of high pressure. d. Areas of high pressure associated with subsiding air and adiabatic warming and drying due to compression. e. High pressure regions likely to block cyclonic storms further exacerbating dryness. e. Droughts in the US are linked to La Niña conditions. g. Drought appears to be the most manageable natural hazards in terms of human preparedness: 1) Onset of drought is relatively slow 2) Time for human response and intervention, but 3) Slow onset allows time for human actions to significantly worsen the effects of drought 1
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2. Types of droughts: a. Meteorological 1) A meteorological drought defined as the amount of dryness relative to normal. 2) A meteorological drought is specific to a particular
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This note was uploaded on 05/03/2008 for the course ATOC 1050 taught by Professor Forrest,be during the Spring '06 term at Colorado.

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ATOC 1050 chapter 25 notes - ATOC 1050, Rauber, et al....

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