Assignments

• Reading:

Gilliam (Read All)

Read "Normals, Means and Extremes" link on class website.

Housekeeping

- Class Midterm has been moved to October 11, 2004. Midterm will be 50 questions-multiple choice.

- Class average for Assignment #1 was 90 point. Answers to assignment can be found on class website.

-A check mark = correct

-an ‘X’ = Wrong

-A Check mark with an X = partial credit.

- Read the instruction more carefully, include proper symbols (F, mb.ect.)

Wind Patterns

Winds were moving from West to East—from ocean to continent, tells us high pressure should be off shore. (Ground level differentiates with elevation.)

- We talked about the winds in SF that were blowing from west to east (from the ocean to the bay)

- It appears that high pressure is off shore and lower on shore

- One of the best web sites for weather maps, and charts is UCAR (www.rap.ucar.edu/weather)

- There is fog on the coast (cloudy sky)

- San Francisco – 62F, 53 dew point, cloudy, west winds in the area

Pressure

MRY. Pressure- 1015.8nb

NLC. 1012.7mb (East of MRY)

High low pressure

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Ocean inland

Visibility & IR Weather Map visibility

1KM, smallest cloud element you can see on map

4Km VIS means smallest cloud you can see it 4km

Foggy layer almost 1500-2000 ft deep

Compare visibility to IR (infrared)

Verify observations on VIS mar in the IR map.

Other Notes:

Reader: mean seal lever pressure in July

Shows North American thermal low—summertime, centered over deserts of SW Mexico

Thermal Low in Asia, Russia—associated with South Asia monsoon …Atlantic warmer.

Airflow from ocean to continent.

Difference is ocean it comes from pacific=colder.

Pressure moves faster in places where isobars are closer together.

Gyre- ocean currents.