EES 108 Class 20

EES 108 Class 20 - Test#1 Grades Test#1 Grades 10 9 8 7 6 5...

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Test #1 Grades Test #1 Grades 0 1 2 3 4 5 6 7 8 9 10 F D- D D+ C- C C+ B- B B+ A- A 0 59.5 62.5 66.5 69.5 72.5 76.5 79.5 82.5 86.5 89.5 92.5
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Patterns of Weather and Climate
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Homework review
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Principles of wind speed Most important: Large pressure gradient = high wind Small pressure gradient = slow wind If pressure gradients are equal Faster (supergeostrophic) around  ridges, high-pressure cells Slower (subgeostrophic) around troughs, low-pressure cells But… There is a physical limit to large the gradient can become at  ridge or high-pressure cell pressure gradients
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Length scales Scale Time Distance Description Examples Macroscale  Planetary Weeks or  longer 1000-40,000 km (600-25,000 miles) Planet Westerlies, trade  winds,  El Niño  Synoptic Days to  weeks 100-5000 km  (60-3000 miles) Continent Midlatitude  cyclones, 
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EES 108 Class 20 - Test#1 Grades Test#1 Grades 10 9 8 7 6 5...

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