posted by jorge .
Assume that a parcel of air is forced to rise up and over a 6000-foot high mountain (shown below). 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 the condensation begins at 100% relative humidity and that no evaporation takes place as the parcel descends. Indicate calculated temperatures to one decimal place.
1. Calculate the temp of the parcel at the following elevations as it rises up the windward side of the mountain
A 1000' ________________
B 3000' __________________
2 after the parcel of air has descended dpwn the lee side of the mountain to sea level what is the temperature of the parcel?____________
5.One the winward side of the mountain, should the relative humidity of the parcel change as it rises from 3000 to 6000 feet?__________________
6. As the air rises up the windward side of the mountain
a what is the capacity (saturation mixing rate) of the rising air at 3000 feet?_____________________________g/kg
what is the capacity of the air at 6000 feet?________________________________g/kg
7. what is the capacity of the air after it descended back down to sea level on the lee side of the moutain? ____________
8. Assuming no water vapo is added as the parcel descends down the lee side of the mountain to sea, is the water vapor content (the mixing ration) of the parcel higher or lower than before it began to rise over the mountain?______________________
what is the lifting condensation level of this parcel now? ___________________________feet