Meteorology

Meteorology

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

Contributors in Meteorology

Meteorology

Time, as measured for a given point on the earth. Local sidereal time, for instance, is by Greenwich sidereal time minus the local longitude of the point (15° longitude is equivalent to a one-hour ...

Lax equivalence theorem

Weather; Meteorology

Theorem that states that a consistent finite-difference approximation to a well-posed time-dependent linear partial differential equation is convergent if, and only if, it is stable. See stability.

locally generated sea

Weather; Meteorology

The wavefield at a given location resulting from the local effects of wind, without being affected by swell generated elsewhere and propagating into the area.

Labrador Current

Weather; Meteorology

The western boundary current of the North Atlantic subpolar gyre. The current receives considerable input of Arctic Surface Water originating from the East Greenland Current and supplied through the ...

lightning flash

Weather; Meteorology

The total observed lightning discharge, generally having a duration of less than 1 s. A single flash is usually composed of many distinct luminous events that often occur in such rapid succession ...

knot

Weather; Meteorology

The unit of speed in the nautical system; one nautical mile per hour. It is equal to 1. 1508 statute miles (1. 852 km) per hour or 1. 687 ft (0. 5144 m) per second.