1 .		Suppose an air mass warms as it moves over a land mass, but no water vapor is added or lost. The relative humidity will _____ while the specific humidity will _____.    fall/rise   not change/not change   rise/not change   not change/fall   fall/not change
2 .		The Peru current is a cold current off the west coast of South America. If a warm, moist air mass passed over this current, what would probably result? [Hint]   advection fog   adiabatic cooling   thunderstorms   orographic fog   radiation fog
3 .		Examine this sounding diagram for Dallas, Texas (actually, Dallas-Ft. Worth) for 1200 UTC on 30 June 1998. Lines of constant pressure are colored blue and are located on the vertical axis. Lines of constant temperature are on the horizontal axis and extend diagonally from lower left to upper right. The white line on the left represents the vertical profile of the dew point temperature while the white line on the right represents the vertical temperature profile (change in temperature with height, or the environmental lapse rate). What is the surface temperature in Dallas?    27 degrees C   35 degrees C   22 degrees C   15 degrees C   10 degrees C
4 .		What is the surface dew point temperature in Dallas?    27 degrees C   10 degrees C   22 degrees C   30 degrees C   12 degrees C
5 .		Using this chart from the text, how much moisture can the air in Dallas hold at its current temperature? In other words, what is the saturation specific humidity?    10 g/kg   15 g/kg   17 g/kg   23 g/kg   30 g/kg
6 .		Knowing that the specific humidity in Dallas is about 17 g/kg, what is the approximate relative humidity in Dallas? [Hint]   100%   74%   63%   44%   27%
7 .		Is the atmosphere saturated in Dallas?    Yes, it is.   No, it isn't.   It's impossible to tell.
8 .		Refer back to the sounding diagram once again. The green lines which extend diagonally from the lower right hand side of the diagram to the upper left side are called "dry adiabats." They represent the dry adiabatic lapse rate, which is 9.8 degrees C per kilometer. The dashed lines yellow lines respresent constant absolute humidity. Find the surface temperature at Dallas once again. Pretend a parcel of air is going to rise from the surface. Trace its path by having the parcel parallel one of the dry adiabats (green lines). Imagine also a line extending from the surface dewpoint parallel to one of the dashed yellow lines. When the trajectory of the air parcel along the dry adiabat crosses this line of constant humidity, it means that the parcel has cooled to the point where it has reached its dew point and has become saturated. This is called the lifting condensation level or LCL. What is the approximate LCL? If you have problems, consult the resources found on the Internet.    1000 mb   930 mb   880 mb   740 mb   230 mb
9 .		Which of the following statements is not true? If a parcel reaches the LCL,    condensation occurs.   clouds may begin to form.   relative humidity is 100%.   latent heat is released.   none of the above occurs.
10 .		If the air parcel continued to rise past the LCL,    it would begin to warm at the dry adiabatic lapse rate.   it would continue to cool at the dry adiabatic lapse rate.   it would continue to cool, but at the saturated adiabatic lapse rate.   its temperature would remain constant.   latent heat would be consumed.
11 .		The dashed light blue lines represent the saturated adiabatic lapse rate (SALR). Once the air parcel reaches the LCL, it will continue to rise and cool at the SALR as long as the parcel is warmer than its environment. Imagine the air parcel from our previous questions is forced to rise from the LCL. The parcel cools at the SALR, which you can picture by having the parcel parallel one of the dashed light blue lines. When the parcel reaches 700 mb, is it warmer or cooler than its environment?    warmer   cooler   It's impossible to tell.
12 .		Given your answer to the last question, would the parcel have the tendency to rise or sink at the 700 mb level?    rise   sink   It's impossible to tell.