Atmospheric Circulation Patterns

Prevailing Winds

Lat.Wind TypesPrecipitationClimateCoriolis Speed
90ºNorth PoleHigh Pressure, DesertPolar0 km/hr
Polar EasterliesSubpolar200 km/hr
60ºMid latitudesLow Pressure, RainSubpolar-temperate400 km/hr
WesterliesTemperate600 km/hr
30ºHorse LatitudesHigh Pressure, DesertSubtropical700 km/hr
NE Trade WindsTropical800 km/hr
Equatorial DoldrumsLow Pressure, RainEquatorial1000 km/hr
SE Trade WindsTropical800 km/hr
30ºHorse LatitudesHigh Pressure, DesertSubtropical700 km/hr
WesterliesTemperate600 km/hr
60ºMid latitudesLow Pressure, RainSubpolar-temperate400 km/hr
Polar EasterliesSubpolar200 km/hr
90ºSouth PoleHigh Pressure, DesertPolar0 km/hr


High and Low Pressure Centers

January SeasonContinentsOceans
Northern
Hemisphere
WinterHigh Pressure Cells
Anticyclonic (CW) Winds
Low Pressure Cells
Cyclonic (CCW) Winds
Southern
Hemisphere
SummerLow Pressure Cells
Anticyclonic (CW) Winds
High Pressure Cells
Cyclonic (CCW) Winds

July SeasonContinentsOceans
Northern
Hemisphere
SummerLow Pressure Cells
Cyclonic (CCW) Winds
High Pressure Cells
Anticyclonic (CW) Winds
Southern
Hemisphere
WinterHigh Pressure Cells
Cyclonic (CCW) Winds
Low Pressure Cells
Anticyclonic (CW) Winds


Timothy H. Heaton: E-mail, Home page, Phone (605) 677-6122, FAX (605) 677-6121