Meteorology

Meteorology

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

Contributors in Meteorology

Meteorology

In U. S. Weather observing practice, one of a class of atmospheric phenomena, other than the weather class of phenomena, that may reduce horizontal visibility at the earth's surface. Obstructions to ...

obstacle flow signature

Weather; Meteorology

The Doppler velocity signature of middle-altitude flow around the strong updraft region of a severe thunderstorm. The signature indicates stronger flow around the edges of the updraft region and ...

observing systems simulation experiment (OSSE)

Weather; Meteorology

An experiment in which a model is assumed to represent the exact behavior of the physical system (the atmosphere) of interest. The model results are then sampled in a fashion to mimic some real or ...

observer

Weather; Meteorology

In meteorology, anyone who takes a weather observation.

observational network

Weather; Meteorology

A group of meteorological observing stations spread over a given area for a specific purpose.

observational error

Weather; Meteorology

The difference between the true value of some quantity and its observed value. Every observation is subject to certain errors, as follows. 1) Systematic errors affect the whole of a series of ...

observational day

Weather; Meteorology

Any 24-hour period selected as the basis for climatologic or hydrologic observations. Where observations are recorded automatically, the observational day is commonly taken as the calendar day. Where ...