EAS 381 (All Teaching Majors in EAS 380) Assignments 4 (cont) -6

• Discussions Continue on all Mondays through rest of semester
• Analysis Due: Monday, 23 November 2009

Assignment 4 (cont): More Class Front Discussions

Each person will present a 5-minute discussion using a current weather map without fronts, like those on the UCAR Surface Menu, about the position of fronts.

There must be a front present on the map to use it. If there's no front on the Minnesota area section, pick another one.

You will explain where you draw the front to the class and what meteorological variables, e.g., wind shift, temperature change, etc. These discussions will occur on Mondays until each person has done three of them

 

Assignment 5: Analysis and Fronts (Analysis Due: Monday, 30 November 2009 )

1. ANALYSIS (100 pts)

   On the map from 18Z 28-October-2009 , do the following:

   1. On one copy, draw isotherms (solid) for every 5°F, e.g., 55°F, 60°F, 65°F, 70°F. Label all isotherms. Here is a version of the map with temperatures only.
   2. Draw isodrosotherms (dashed) for every 5°F. Label all isodrosotherms. Do not analyze off the edge of the map! Here is a version of the map with dew points only.
   3. Label your map to denote which map is which.
   4. Draw in black pencil (solid line) isobars for every pressure value divisible by 4 (i.e., 996, 1000, 1004 mb). (Hint: how would these values appear in the pressure plotting code?). Here is a version of the map with coded sea-level pressure only.
      1. Label each isobar with its actual value in whole millibars.
      2. If there is an area of low pressure, draw a red L and label with the central pressure value in whole mb.
      3. If there is an area of high pressure, draw a blue H and label with the central pressure value. Do not draw centers on the edges of the map.
   5. Draw in the isallobars (constant pressure change) as follows (here is a version of the map with pressure change only):
   1. Rises every 1 mb/3 hr in dashed blue colored pencil.
   2. Falls every 1 mb/3 hr in dashed red colored pencil.
   3. The "zero" isallobar in dashed black colored pencil.
   4. Label all values.
   6. Draw a red F in the center of the maximum pressure falls and a blue R in the center of the maximum pressure rises. Do not draw centers on the edges of the map!

2. FRONTS (50 pts)