Winds (mainly surface)

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Wind: air in motion relative to the surface of the Earth. Vertical components of atmospheric motion are relatively small, so the term is used to denote almost exclusively the horizontal component.Wind is often described by these two characteristics:

  • Wind speed: the velocity attained by a mass of air traveling horizontally through the atmosphere and it is often measured with an anemometer in kilometers per hour (KPH), miles per hour (MPH), knots, or meters per second (MPS).
  • Wind direction: is the one from where a wind comes and it is measured by an instrument called a wind vane.

Formation of winds

Different forces acting in the atmosphere are involved in wind formation: Gravity - makes cold dense air to sink and when it impacts on the ground, it spreads horizontally. Pressure - differences [...]

Types of winds

There are different types of winds: Light air: Light air in the Beaufort wind scale is a wind with a speed from 1 to 3 knots (1 to 3 MPH or 2 [...]

Measurements

Beaufort wind scale: - A system of estimating and reporting wind speeds using a numerical scale ranging from 0 (calm) to 12 (hurricane). - The purpose for this system was to allow [...]