6) The diagram below shows an air parcel being forced up and over a topographic

Question

6) The diagram below shows an air parcel being forced up and over a topographic barrier. The air parcel temperature at sea level (0 meters) is 25 degree C. The specific humidity of the air parcel is 5.0g/kg. Assume that the DAR is 10 degree C/1000 meters, the MAR 6 degree C/1000 meters. Using both the dry adiabatic lapse rate (DAR) and moist adiabatic lapse rate (MARX determine the temperatures associated with an air mass that is forced over a topographic barrier. Remember that as air descends the leeside of the mountain, air temperature will increase. HAT: In order to determine whether to use the DAR or AL4R, you will need to calculate the air parcels relative humidity at each elevation. Use the chart at the beginning of this lab or the graph in your textbook (5pts) Rising Air a) What is the temperature of the rising air parcel at 1500 m? b) What is the temperature of the rising air parcel at 2000 m? c) What is the temperature of the air parcel at 3200 m? d) What is the temperature of the descending air parcel (on leeside of mountain) at 2000 m? e) What is the temperature of the descending air parcel (on leeside of mountain) at 0 m?

Explanation / Answer

A dry adiabatic lapse rate of 10C

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