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|Date assigned:||January 26, 2000|
|Date due:||Wednesday, February 2, 2000 by 5:00 p.m.|
PROBLEM 1 (20)
Explain how and why each of the following will change as a parcel of air with an unchanging amount of water vapor rises, expands, and cools: a) absolute humidity; b) relative humidity; c) actual vapor pressure; d) saturation vapor pressure.
PROBLEM 2 (15)
In the winter of 1844, John C. Fremont and Kit Carson led an expedition that crossed the Sierra Nevada Mountains near present day Carson Pass, which is located about 15 miles south of Lake Tahoe and only several miles east of Kirkwood Ski Resort. Despite experiencing tremendous hardships, including having to eat their pet dog and some of their horses, Fremont recorded much scientific data, including the elevation of various points along their trail. On February 20, 1944, Fremont writes: "The temperature of boiling water gave for the elevation of the encampment nine thousand three hundred and thirty-eight feet above the sea."
Explain how Fremont was able to estimate his elevation based on the boiling point of water. Your answer must include a discussion of saturation vapor pressure.
PROBLEM 3 (10)
The data given in the chart below represents the dew-point temperature (Td) and expected minimum temperature (Tmin) near the ground for various clear winter mornings in a southeastern city. Assume that the dew-point temperature remains constant throughout the night. Answer the following questions about the data.(a) On which morning would there be the greatest likelihood of observing visible frost? Explain.
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