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Multiple Choice Questions

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Geography and Environment(BPSC) World climates

US witnessed extreme weather conditions due to polar vortex. Which of the following is not correct about polar vortex?

This is closely associated with polar climate.

The air in Polar vortex circulates in anti-clockwise fashion in the Northern Hemisphere and in clockwise fashion in the southern hemisphere.

These are cold-core high pressure area strong in the winter and weak in the summer.

Their rotation is caused by Coriolis force.

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Explanation:

Polar Vortex is a

1. Cold;
2. Upper tropospheric: sometime extending till the lower levels of stratosphere (At poles, the troposphere extends up to 8-9 km);
3. Circumpolar;
4. Low pressure;
5. Large cyclonic parcel of air [1000 km] (counter-clockwise in the Northern Hemisphere)

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