Semi-permanent Northern Hemisphere Surface Pressure Systems

A. Subtropical Highs

Related Both To Temperature Diffferences Between Equator/Subtropics (Hadley Cell) and Continent/Ocean

(Move North and Strengthen In Summer/Move South and Weaken in Winter)

Pacific High

Bermuda High

B. "Monsoonal" Pressure Systems

Related To Continent/Ocean Temperature Differences

North America

North American Thermal Low (Summer)

Great Basin High (Winter)

Pacific

Gulf of Alaska Low (Winter)

Atlantic

Icelandic Low (Winter)

Asia

Asian Thermal Low (Summer)

Siberian High (Winter)