13 Terms
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Meteorology
A database of terms pertaining to the scientific study of the atmosphere.
Industry: Weather
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Meteorology
minimums
Weather; Meteorology
The limiting values of ceiling, visibility and wind, or runway visual range, established as safety minimums for aircraft landings and takeoffs. Civil aircraft operate under limits stated in Civil Air ...
operator
Weather; Meteorology
A mathematical symbol that stands for a specific operation upon a variable or function. See linear operator, del operator, Laplacian operator.
operational weather limits
Weather; Meteorology
The limiting values of ceiling, visibility and wind, or runway visual range, established as safety minimums for aircraft landings and takeoffs. Civil aircraft operate under limits stated in Civil Air ...
oceanity
Weather; Meteorology
The degree to which a point on the earth's surface is in all respects subject to the influence of the sea; the opposite of continentality. Oceanicity usually refers to climate and its effects. One ...
open system
Weather; Meteorology
A thermodynamic system so chosen that there may be transfer of mass across the boundaries; for example, an air parcel undergoing a pseudoadiabatic expansion. Compare closed system.
operational numerical model
Weather; Meteorology
A numerical formulation of the governing equations of hydrodynamics applied to operational (as opposed to research) problems; typically used in reference to operational weather prediction models.
open-cell cumulus
Weather; Meteorology
Cumulus clouds that align themselves in polygonal or elliptical shapes with clear center areas surrounded by clouds. Open-cell cumulus are found mainly over oceans in areas of strong cold-air ...
