chapter1SevereWeather

chapter1SevereWeather - DSM 2000 Severe Weather Disaster...

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Unformatted text preview: DSM 2000 Severe Weather Disaster Science & M anagement 2000 H azar ds, Disaster s and the Envir onment Sever e Weather Par t I Depar tment of Geogr aphy & Anthr opology Louisiana State Univer sity DSM 2000 Severe Weather 11 DSM 2000 Severe Weather Weather Basics: Air Pr essur e Repr esents the weight of the atmospher e on the sur face of the Ear th Decr eases with incr easing altitude M easur ed in millibar s (mb) or inches of mer cur y. H igh pr essur e system denoted by the letter H on a weather map region of higher air pressure than the air around it DSM 2000 Severe Weather 22 DSM 2000 Severe Weather Weather Basics: Pr essur e DSM 2000 Severe Weather 33 H L 1008 mb 1004 mb 1000 mb 992 mb 996 mb DSM 2000 Severe Weather H L In the Northern Hemisphere: In the Southern Hemisphere: H L Weather Basics: Cor iolis For ce DSM 2000 44 Severe Weather DSM 2000 Severe Weather Weather Basics: H igh and Low Nor ther n H emispher e DSM 2000 Severe Weather 55 H L DSM 2000 Severe Weather Weather Basics: Air M asses mP: M ar itime Polar cA: Continental Ar ctic cP: Continental Polar mT: M ar itime T r opical DSM 2000 Severe Weather 66 Source: http://www.srh.noaa.gov/jetstream//synoptic/airmass.htm DSM 2000 Severe Weather DSM 2000 Severe Weather 77 DSM 2000 Severe Weather Weather Basics: Cold F r ont DSM 2000 Severe Weather 88 Colder temperatures Warmer temperatures Source: http://www.srh.noaa.gov/jetstream//synoptic/images/coldfront.jpg DSM 2000 Severe Weather Weather Basics: War m F r ont DSM 2000 Severe Weather 99 Warmer temperatures Colder temperatures Source: http://www.srh.noaa.gov/jetstream//synoptic/images/warmfront.jpg DSM 2000 Severe Weather Cold and War m F r onts 1010 Source: http://www.srh.noaa.gov/lzk/images/martor/ srnus.gif Source: http://www.crh.noaa.gov/lmk/soo/docu/wx_wrmfnt2.gif DSM 2000 Severe Weather DSM 2000 Severe Weather Weather Basics: Stationar y F r ont DSM 2000 Severe Weather 1111 Warmer temperatures Colder temperatures DSM 2000 Severe Weather Weather Basics: M id-Latitude DSM 2000 Severe Weather 1212 L DSM 2000 Severe Weather Weather Basics: Occluded F r ont DSM 2000 Severe Weather 1313 L L DSM 2000 Severe Weather Weather Basics: M id-Latitude DSM 2000 Severe Weather 1414 L L L L L L DSM 2000 Severe Weather Weather M aps DSM 2000 Severe Weather 1515 Source: http://upload.wikimedia.org/wikipedia/commons/c/ca/Surface_analysis.gif DSM 2000 Severe Weather Thunder stor m electr ical stor m associated with lightning and thunder typically accompanied by heavy r ainfall, str ong winds, and in mor e r ar e DSM 2000 Severe Weather 1616 Source: http://www.srh.noaa.gov/jetstream//tstorms/tstrmtypes.htm DSM 2000 Severe Weather I ngr edients for a Thunder stor m 1. F uel : Water Vapor 2. I nstability 3. Lifting mechanism Convective lifting Or ogr aphic lifting Fr ontal lifting...
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chapter1SevereWeather - DSM 2000 Severe Weather Disaster...

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