Meteorology

Meteorology

A database of terms pertaining to the scientific study of the atmosphere.

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Meteorology

Osmometer

Weather; Meteorology

A device for measuring soil water amounts, especially under roads; seldom used.

1. A swinging, as of a pendulum. Often applied to periodic motion or variation in time of any quantity, although may mean any more or less regular variation between fixed bounds. Fluctuation is more ...

Ora

Weather; Meteorology

A regular valley wind at Lake Garda in Italy. See also suer.

Orbital motion

Weather; Meteorology

In hydrodynamics, the motion of a fluid particle induced by the passage of a progressive gravity wave. When the wave height is small and the fluid depth is great, the orbit is a circle the radius of ...

Orbital velocity

Weather; Meteorology

As an ocean wave propagates, the water itself moves in an approximately circular motion (in deep water), with the amplitude of the motion decaying with depth below the sea surface. The velocity ...

Ordinary cell

Weather; Meteorology

The most basic component of a convective storm, consisting of a single main updraft that is usually quickly replaced by a downdraft once precipitation begins. Ordinary cells are especially observed ...

Ordinate

Weather; Meteorology

The vertical coordinate in a two-dimensional system of rectangular Cartesian coordinates; usually denoted by ''y''. Also, the vertical axis of any graph. See abscissa.