Meteo 431  Atmospheric Thermodynamics  Spring 2002

Problem set # 4

assigned:    1 February 2002

due:            8 February 2002

1.  Consider the heating of an air parcel. What is the ratio of the temperature change of a dry air parcel in a constant volume process compared to a constant pressure process? You should be able to obtain both an analytical expression and a numerical value.

2. What is the air temperature change with time in a closed room (5 m x 4 m x 3.5 m) after the 10 computers in the room are turned on? Assume that each computer dumps 200 Watts of energy into the air? In reality, the temperature does not just keep increasing. Why?

3. What is the density of an air parcel that contains 1% water vapor at a pressure of 1000 hPa and temperature of 293K?

4. What is the potential temperature of an air parcel that has a pressure of 200 hPa and a temperature of 200 K?

5. What is the temperature of this air parcel as it is brought adiabatically to 500 hPa?

6.  B&A, Chapter 3, # 2.

7. B&A, Chapter 3, # 7.