Lecture 17 - Lecture 17 Skew T-Log p moist adiabat isotherm...

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Unformatted text preview: Lecture 17 Skew T-Log p moist adiabat isotherm isobar sat mixing ratio dry adiabat 1. Given T=18o, w=4g/kg at 1000hPa What is TD, RH? 4 10 12 g/kg 15 a)We estimate that ws=13g/kg b) r=4/13 c) TD =1o 2. Where is the LCL for this case? To get the LCL 1. Take the parcel up along a dry adiabat. 2. Take the ws line up. Where they cross is the LCL LCL What is the wet bulb temperature? 3. Slide down the moist adiabat from the crossing above down to the 1000hPa level. Take the adiabat up to the LCL and beyond LCL Find the Equivalent Potential Temperature: Take the parcel to infinity along dry, then wet adiabats, then bring it back along a tangential dry adiabat. LCL Equivalent Potential Temperature Brownsville, TX, 4/4/07 CAPE Topeka, KA, 4/4/07 No CAPE Charleston, SC, 4/4/07 Tallahassee, FL, 4/407 CAPE CIN Descending air and stability Lower this slab on a dry adiabat from 200-300 down to 400-500 After adiabatic descent the slab is much more stable (slope of temp profile is altered) ...
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This note was uploaded on 04/02/2008 for the course ATMO 335-501 taught by Professor North during the Spring '07 term at Texas A&M.

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