Quiz #3 Study Guide pt. 2
click here to download this Study Guide in Microsoft WORD format

Dew, frozen dew, frost. How do these differ (Is the nighttime minimum temperature, Tmin, above or below freezing; is the dew point temperature, Td, above or below freezing; is Tmin warmer or colder than Td)?  What weather conditions favor their formation?

Cloud condensation nuclei (CCN). Do CCN make it harder or easier for clouds to form? Typical concentrations. Hygroscopic nuclei. Dry haze, wet haze, and fog. Radiation fog and steam fog (aka evaporation or mixing fog).  "Cloud in a bottle" demonstration. Clouds clean the atmosphere.

Cloud identification and classification. Ten cloud types. Clouds are classified according to altitude and appearance; what key words are used? You should be able to identify each of the 10 cloud types in a picture (eg. Fig. 6-15) or from a written description (eg. high altitude cloud with a filamentary appearance). How would you distinguish between Cc, Ac, and Sc or between Cs and As? What cloud type could produce a halo? Common features on thunderstorm clouds: anvil, mammatus, shelf cloud.

Sample Questions from the Fall 2000 Quiz Packet     Quiz #3: 9, 17     Quiz #4: 1, 4, 10, EC2     Final Exam: 8, 44, 50
*** Photocopied Notes (pps 99-100) ***
Satellite Photographs.  Infrared and visible photographs.  What do white and grey on these two types of photographs represent?   Thunderstorms can produce severe weather; how would a thunderstorm appear on VIS and IR photographs?  How can satellites view clouds at night?  How is it possible to see air motions in regions where there aren't any clouds?  Geostationary and low-earth orbit satellites.  Here is a sample satellite photograph question.

Sample Questions     Quiz #4: 8?, 16, EC1     Final Exam: 38