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    GLOBAL PRESSURE AND WIND PATTERNS

A. LEARNING OUTCOMES

By the end of this unit you should be able to:

Global Wind and Pressure Patterns

Map: global circulation and pressure patterns


B. GLOBAL PRESSURE PATTERNS

Map: global mean sea level pressure
Image modified from: National Weather Service Climate Prediction Center (2002) NOAA, Mean annual sea level pressure 1979-1995. http://www.cpc.ncep.noaa.gov/products/precip/realtime/clim/annual/monthly/annual.slp.html

Intertropical Convergence Zone (~0-10o)

  • thermally induced low pressure

Subtropical high pressure cells (~20-40o)

  • mechanically induced high pressure

Subpolar low & Polar front (~40-70o)

  • mechanically induced low pressure

Polar high

  • thermally induced high pressure


C. GLOBAL WIND PATTERNS Link icon: textbook comment

Trade winds (SE and NE)

Westerlies

Polar Easterlies

Seasonal shifts


D. LOCAL AND REGIONAL WINDS

Land and sea breezes

Sea breeze
Diagram: sea breeze

Land breeze
Diagram: land breeze

Monsoon winds in Southeast Asia   Link icon: textbook comment

Winter monsoon

Map: Asian winter monsoon

Summer monsoon

Map: Asian summer monsoon


 

E. OCEANIC CIRCULATION PATTERNS   Link icon: note about textbook

Map: oceanic circulation cells


F. SUMMARY Link icon: note about textbook


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©Karen A. Lemke: klemke@uwsp.edu
Last revised September 26, 2010