DEPARTMENT OF GEOSCIENCES          Name_________________________

San Francisco State University                                                        Spring 2010

 

Metr 201 Monteverdi Quiz #4

100 pts.

(25 min. Test will be collected at 10:10 AM)

 

1.     Definitions.  (5 points each for a total of 25 points in this section).

 

(a)  Convective Condensation Level --

 

 

 

(b) Potential Instability --

 

 

 

(c)  The 700 mb level is found typically at what height (either in decameters or feet) ______

 

(d) A contour of constant dew point temperature is known as an ______

 

(f)  dry line--

 

 

 

 

 

2. Units.  Provide the units used conventionally for the following (5 pts each for a total of 15 pts)

        

Example

         Acceleration          meters per sec2 or m s-2

 

        

   Pressure gradient                           ___________________________

 

         mixing ratio                            ___________________________

 

         lapse rate                                ___________________________

 

         p/y                                             ___________________________

 

 

 

 

 

 

3. Severe Weather Outbreak, April 29, 2010 (29 pts).

 

Part I.  Essay Question.  You are provided with the paired (a) CAPE/CIN charts;  (b) Visible Satellite Images;  and (c) radar reflectivity images for approximatelly 1700 UTC and 2200 UTC on 29 April 2010.  Note the locations labeled A and B.

 


Explain the differences in the satellite and radar presentation at locations A and B given the evolution of the CAPE/CIN field you see on the top chart. [Note:  this is an essay question.  It does not need to be long.  However, it needs to be written in proper English, NEATLY, with sentences that have a subject, verb and object]  (40 points)


 

Part 2.  Short Answer. You are provided with the surface analysis at 01 UTC 30 April 2010.  Note the boundary indicated by the arrow.  It is the dry line.

 

 

Examine the weather information on either side of the dry line.  Now briefly describe why that weatther information is consistent with the fact that the dry line is analyzed in the location shown.  [Caution:  it is up to you to decide what weather information is consistent with the analyzed dry line.]

[Note:  this is a short answer question.  It does not need to be long.  However, it needs to be written in proper English, NEATLY, with sentences that have a subject, verb and object]  (20 points)