a. A parcel of air has a temperature of 25°C and a dew point temperature of 14°C.What is the height of the LCL? If that parcel were to rise to 4000 meters, what would be its temperature? b. A parcel of air at 6000 meters has a temperature of 25°C and a dew point of 210°C. If it descended to 2000 meters, what would be its temperature and dew point temperature?
a. A parcel of air has a temperature of 25°C and a dew point temperature of 14°C.What is the height of the LCL? If that parcel were to rise to 4000 meters, what would be its temperature? b. A parcel of air at 6000 meters has a temperature of 25°C and a dew point of 210°C. If it descended to 2000 meters, what would be its temperature and dew point temperature?
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Recall that as a parcel of air rises, it expands and cools. The rate of cooling, termed the dry adiabatic lapse rate, is 10°C per 1000 meters. (A descending parcel of air will always warm at this rate.) In addition, the dew point temperature decreases 2°C per 1000 meters within a rising parcel of air. At the height at which the dew point temperature is reached, condensation begins and, as discussed in the text, the wet adiabatic lapse rate of 5°C per 1000 meters becomes operational.When the wet adiabatic lapse rate is in operation, the dew point temperature will be the same as the air temperature. When a parcel descends through the atmosphere, its dew point temperature increases 2°C per 1000 meters. The height at which condensation begins, termed the lifting condensation level (LCL), can be determined by using the formula found in Geography’s Physical Science Perspective: The Lifting Condensation Level (LCL), page 164. a. A parcel of air has a temperature of 25°C and a dew point temperature of 14°C.What is the height of the LCL? If that parcel were to rise to 4000 meters, what would be its temperature? b. A parcel of air at 6000 meters has a temperature of 25°C and a dew point of 210°C. If it descended to 2000 meters, what would be its temperature and dew point temperature?
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