3.1.2.Che wind
Do Bac Kan Province located inland to the mountains, not so little affected by the hurricane, cyclone occasional local area each narrow little effect on production, People living. Given the influence of monsoon circulation, Southeast Asia and topography, wind direction changes according to seasons. Winter, prevailing wind directions northeast or north. Summer is mainly oriented southwest or southerly winds. Winds are generally smaller than the Tonkin Delta from 0.5m / s-1 m / s.
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