a. Identify the level of free convection and the equilibrium level b. identify s
ID: 115094 • Letter: A
Question
a. Identify the level of free convection and the equilibrium level
b. identify stable, unstable, and neutrally stable regions. Find CAPE and LCL.
C. calculate the precipitable water vapor amount in units of mm
SLAT 37.10 SLON 127.03 SELV 52.00 SHOW 1.04 LIFT -2.63 LFTV -3,46 SWET 374.4 KINX 3340 CTOT 19.60 VTOT 21.10 TOTL 40.70 CAPE 1073 CAPV 1222. CINS -2.37 CINV -1.01 200 12 EOLV 163.3 300 3 EQTV 162.8 LFCT 923. LFCV 931.2 BRCH 145.2 BRCV 165.4 LCLT 295.8 LCLP 939.9 MLTH 301.1 400 500 MLMR 18.93 THCK 5798 PWAT 83.53 700 800 9000 1000 -40 -30 -20 -10 0 10 20 30 40Explanation / Answer
The level of free convection is the height at which a parcel of air becomes warmer than the surrounding air. Whereas the equilibrium level is that where the temperature of a positively buyoyant air becomes equal to that of surrounding air. Above this level the parcel of air becomes negatively buoyant.
If temperature on the adiabat is less than the environmental lapse rate then the atmosphere is stable. The air tends to sink in the stable atmosphere. If the temperature on tha adiabat is more than the environmental lapse rate the atmosphere is unstable and the air will tend to rise in the stable atmosphere. Whereas if temperature on the adiabat is equal to that of environmental lapse rate then atmosphere is in neutral equilibrium. In neutral equilbrium the air neither sinks or rises but will remain in its original position.
Cape is the maximum available potential energy available for the rising parcel of air. It is measured in units of joule/kg. It the vertical buoyancy from the level of free convection upto the limit of convection.
LCL is that height at which the dry parcel of air becomes saturated when it is lifted adiabatically. It is measured in units of millibar
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