Wind is the natural movement of air or other gases relative to a planet's surface. Winds occur on a range of scales, from
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Wind is caused by differences in atmospheric pressure, which are mainly due to temperature differences. When a difference in atmospheric pressure exists, air moves from the higher to the lower pressure ar… See more

Wind direction is usually expressed in terms of the direction from which it originates. For example, a northerly wind blows from the north to the south. Weather vanes pivot to indicate the direction of the wind. At airports, … See more

Models can provide spatial and temporal information about airflow. Spatial information can be obtained through the interpolation of data from various measurement stations, allowing for horizontal d… See more

Historically, the Beaufort wind force scale (created by Beaufort) provides an empirical description of wind speed based on observed sea conditions. Originally it was a 13-level scale (0-12), but during the 1940s, the scale w… See more

Easterly winds, on average, dominate the flow pattern across the poles, westerly winds blow across the mid-latitudes of the earth, polewards of the subtropical ridge, while easterlies again dominate the tropics.
Directly un… See more

In coastal regions, sea breezes and land breezes can be important factors in a location's prevailing winds. The sea is warmed by the sun more slowly because of water's greater specific heat compared to land. As th… See more