Polar easterly winds

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The polar easterly winds are part of the planetary wind system . These winds are caused by efforts to compensate for the high pressure areas at the poles and the subpolar low pressure channels, which are located at about 70 ° north and south latitude. However , these compensating currents are deflected by the Coriolis force , which acts perpendicular to the gradient force . In the northern hemisphere there is a deflection to the right, in the southern hemisphere to the left, which creates easterly winds in both cases . Since the Coriolis force increases with higher latitudes, the winds in the polar zones blow geostrophically (almost parallel to the isobars ).