Tri Cell Model of Atmospheric Circulation AS Geo

It consists of the equatorward movement of the trade winds between about latitude 30° and the equator in each hemisphere, with rising wind components near the equator, poleward flow aloft, and, finally, descending components at about latitude 30° again. Number 1 on the diagram.

• Trade winds

• Hadley Cell

• Polar Front

• Jet Stream

Name the convection Cell for 2 on the diagram

• Hadley Cell

• Jet Stream

• Equatorial Low

• Ferrel Cell

These latitudes mark the normal axis of the subtropical highs, and move north and south by about 5° following the sun. The two calm belts are known as the calms of Cancer and calms of Capricorn in the Northern and Southern Hemispheres, respectively; in the North Atlantic Ocean, these are the latitudes of the Sargasso Sea. The name is believed to have originated in the days of sailing ships, when the voyage across the Atlantic in those latitudes was often prolonged by calms or baffling winds so that water ran short, and ships carrying horses to the West Indies found it necessary to throw the horses overboard.

• Jet Streams

• ITCZ

• Polar Front

• Horse Latitudes

This axis is the dividing line between the southeast trades and the northeast trades (of the Southern and Northern Hemispheres, respectively). Also called ITCZ

• Subpolar low

• Polar Jet Stream

• Intertropical Convergence Zone

• Trade Winds

A fast-flowing river of air at the boundary between the troposphere and the stratosphere. This particular river of air is blue on the diagram. What do we call this?

• Subtropical jet stream

• Trade winds

• Polar jet stream

• Doldrums

A fast-flowing river of air at the boundary between the troposphere and the stratosphere. This particular river of air is red on the diagram. What do we call this?

• Polar jet stream

• doldrums

• polar high

• Subtropical jet stream

The wind system, occupying most of the Tropics, that blows from the subtropical highs toward the equatorial trough; a major component of the general circulation of the atmosphere. Winds that blow from 30⁰ latitude to the equator are called...

• westerlies

• polar easterlies

• trade winds

• horse latitudes

Winds that blow from 30⁰ latitude to 60⁰ latitude are called...

• polar easterlies

• westerlies

• trade winds

• doldrums

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

These are rather shallow, irregular, and diffuse winds located poleward of the subpolar low pressure belt.Winds that blow from the North and South pole toward 60⁰ latitude are called...

• trade winds

• westerlies

• polar easterlies

• horse latitudes

Relatively strong winds concentrated within a narrow stream in the atmosphere.These winds travel from West to East.

• Trade Winds

• Equatorial Doldrums

• Jet Stream

• Polar Easterlies