- 行业: Weather
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The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
1. The time required for the earth to rotate once with respect to the moon, that is, the time between two successive upper transits of the moon. The mean lunar day is approximately 1. 035 times as great as the mean solar day, or 24 hours 50 minutes. 2. In astronomy, the time required for the moon to revolve once, relative to a fixed star, about its own axis.
Industry:Weather
World War II name for a polar nephelometer developed by the British Admiralty Research Laboratory.
Industry:Weather
Water entering a stream between two gauging stations or, in the case of a lake or reservoir, between its principal inflow and outflow water courses.
Industry:Weather
Variations in space and time of a parcel identified by its Lagrangian coordinates.
Industry:Weather
Type of air pollution characterized by high levels of ozone and low visibility, typically found in cities located in a valley (e.g., Los Angeles, Denver, Mexico City). Sunlight, oxides of nitrogen, and hydrocarbons (the latter two of which arise from automobile exhaust) are all required in order for smog formation to occur. The most severe episodes occur when a strong temperature inversion caps the location and traps the pollutants. The degradation in visibility is associated with the light scattering due to particulate matter. See London (sulfurous) smog.
Industry:Weather
The western boundary current system of the North Pacific subtropical gyre and its eastward continuation, consisting of the Philippines Current, the Kuroshio, and the Tsushima Current, the Kuroshio Extension and its continuation in the North Pacific Current.
Industry:Weather
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 change in time).
Industry:Weather
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.
Industry:Weather
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.
Industry:Weather
