Global Wind System PDF
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This document explains the learning goals for understanding wind movements and global wind patterns. It includes diagrams and explanations about formation of wind, convection currents, the Coriolis effect, and different types of winds (global and local). It also includes information about the water cycle.
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LEARNING GOALS Explain the different movements of the wind; Discuss the different global of wind patterns. FORMATION OF WIND ❑It begins with the sun’s radiation—absorbed differently on the earth’s surface and heated differently due to cloud cover, bodies of water, vegetatio...
LEARNING GOALS Explain the different movements of the wind; Discuss the different global of wind patterns. FORMATION OF WIND ❑It begins with the sun’s radiation—absorbed differently on the earth’s surface and heated differently due to cloud cover, bodies of water, vegetation, uneven surface like mountains and valleys. FORMATION OF WIND Air on the surfaces with higher temperatures—begin to rise and creates low atmospheric pressure Air on the surfaces with cooler temperatures sink-- creates higher atmospheric pressure Air sinks in High Pressure Area Coriolis Effect SLOWER SPIN Coriolis Effect GASPARD GUSTAVE DE CORIOLIS. ▪ Wind appears to curve WEST EAST due to the earth’s rotation FASTER SPIN ▪ Northern hemisphere- wind curves to the right ▪ Southern hemisphere – SLOWER SPIN wind curve to the left LEFT RIGHT TYPES OF WINDS GLOBAL WIND LOCAL WIND ▪ are large air masses. ▪ occur in belts that go all around the ▪ are winds that blow planet. over a limited area. ▪ are caused by unequal heating of the They are influenced by atmosphere. Earth is hottest at the Equator and gets cooler toward the poles. local geography such as ▪ the differences in heating create huge mountains, vegetation, convection currents in the troposphere water bodies etc. TYPES OF WINDS Polar Easterlies – covers from 600 latitudes to the north and south poles – wind blows from east to west. Prevailing Westerlies – covers 300-600 latitude to the north and south—wind blows opposite (TRADE WINDS) direction from west to east. (Doldrums) Trade Winds – covers 00-300 latitude – wind (TRADE WINDS) blows from east to west. Doldrums (ITCZ)– from 00-50 latitude to the north and south equatorial area – very low pressure are caused by constant heating of the sun.
