Tuesday
May 3, 2016

# Homework Help: Physical Geography

Posted by Sandra on Saturday, June 9, 2012 at 1:51pm.

Would someone please help me with this? Or at least tell me the formula I should be using? I've been trying to get help with this for four days now. I'm VERY frustrated.

Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain. The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000’ and the SAR is 3.3°F/1000’. Assume that condensation begins at 100% relative humidity and that no evaporation takes place as the parcel descends. Indicate calculated temperatures to one decimal point.

1. Calculate the temperature of the parcel at the following elevations as it rises up the windward side of the mountain:

(a) 1000’_______°F
(b) 3000’ ______ °F
(c) 6000’ ______ °F

2. (a) After the parcel of air has descended down the lee side of the mountain to sea level, what is the temperature of the parcel?
________________________ °F