Video Solution #2

Video Solution #2Mac Lozer, AOSS 102, Professor Samson

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Why is the polar jet stream stronger in winter than in summer?Question:

Polar Jet: A high-power stream of wind that is on top of a polar front.Strongest location of a polar jet lies on the top of the troposphere, known as the tropopausePolar Jet Streams move generally in a westward directionWind shears cause the polar jet to separate from warmer airs.

Polar Jet Review

The direction of, and rate of changes of temperature in a particular location.

Surface Temperature Gradients

In the Summer, the polar jet sits further north, at approximately 60 Deg. North Latitude. Compared to winter time, the polar jet is not as strongPolar Jet Streams: Summer Time

Transitioning into a North American Winter, the polar jets moves further south and becomes strongerThis is because the temperature gradients are stronger (higher rate of temperature change) in the south, causing the polar jet to move south.Transition into Winter

The Polar Jet Stream moves southward towards the higher temperature gradients due to wind shears.This exhibits a stronger polar jet stream in the south, which is much stronger of that in the Summer time.Polar Jet Stream: Winter Time

Surface Temperature Gradients (in winter), stronger in the south, moving the stream southward.North Pole: colder, Equator: temperature stays the sameMore of a focus than the Subtropical Jet Stream come winter time for meteorologists because there is more change in the PJS than the STJSOverall Causes:

2014Aoss 102 audio - 12:4:14, 7.31 PM10.0.3