- Industry: Weather
- Number of terms: 60695
- Number of blossaries: 0
- Company Profile:
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, ...
A Lagrangian approach for the simulation of atmospheric dispersion of passive, nonbuoyant, and nonreactive tracers in a turbulent flow. Particle trajectories are calculated by assuming the evolution of turbulent velocities to be Markovian (thus experiencing an acceleration of partly stochastic nature). One-particle models assume the particles to be independent of each other and thus are able to predict ensemble-average statistics only. Two-particle models take into account the relative movement of particle pairs and can therefore predict concentration fluctuations and hence provide information on the actual realization of a plume of pollutants.
Industry:Weather
A high that exists in approximately the same location most of the year, every year, and thus is evident on long-term average annual mean charts.
Industry:Weather
A high-altitude sounding system consisting of a small solid-propellant research rocket carried aloft by an aircraft. The rocket is fired while the aircraft is in vertical ascent.
Industry:Weather
A horizontal velocity field (usually that of the mixed layer), for which the slab approximation can be made.
Industry:Weather
A humidity province of Thornthwaite's 1931 climate classification, defined by precipitation-effectiveness index values of 32–63, and designated letter code ''C''. Based on its typical vegetation, the subhumid climate is sometimes called grassland, or prairie, climate. In 1948, Thornthwaite divided this category into moist subhumid and dry subhumid climate, with moisture index values of 0 to +20 and -20 to 0, respectively. The zero value of moisture index also divides, overall, the moist climates from the dry climates. This type of climate and the semiarid climate are very susceptible to drought conditions.
Industry:Weather
A kind of plane-dendritic crystal, often referring to those with relatively thin branches without elaborate patterns.
Industry:Weather
A hypothetical level of predictability that would be obtained under certain assumptions regarding errors in the knowledge of current and past states of the system, and the model used to predict the future states of the system. For instance, one common usage defines the potential predictability as the predictability assuming that the forecast model being used is perfect and that the only source of error arises from uncertainties in the initial conditions.
Industry:Weather
A hydrostatic principle that pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and to the walls of the containing vessel.
Industry:Weather
A high pressure circulation feature on monthly mean charts that is often evident in the same location during different years. Examples include the North American high and the Siberian high.
Industry:Weather
A haze created by the presence of finely divided particles of sea salt in the air, usually derived from the evaporation of sea spray.
Industry:Weather
