- 行业: Weather
- Number of terms: 60695
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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, ...
A set of tables and associated information for correcting reversing thermometers and computing dynamic height anomalies, compiled by E. C. Lafond (1951).
Industry:Weather
A south or southeast monsoon wind, favorable for the sailing of junks. The wind is known in Thailand, China, and Japan.
Industry:Weather
A simplified atmospheric chemical model, most commonly used for urban airshed models. In a lumped mechanism, organic compounds of similar chemical formula are grouped or “lumped” together and treated as a single representative species. For example, all aldehydes (acetaldehyde, propionaldehyde, etc. ) might be treated as a single molecule of formula RCHO, which undergoes chemical reactions representative of the aldehydes.
Industry:Weather
A series of U. S. Satellites designed for remote sensing and mapping of land areas. These satellites are launched into sun-synchronous orbits that return to image the same swath, two degrees wide, every 16 days. The primary imaging instrument on the first generation of Landsat satellites was a multispectral scanner, a four-channel radiometer with a ground resolution of 80 meters. Landsat-4 and -5 added a second imaging instrument, a thematic mapper, a seven- channel instrument with a ground resolution of 30 meters, used to study vegetation, geology, and other surface features. Landsat-1 (originally called ERTS) was launched in 1972, with Landsat-2 and -3 following in 1975 and 1978. Landsat-4 and -5 were launched in 1982 and 1984.
Industry:Weather
A section diagram plotted in the longitudinal dimension of a stream. It is usually used to plot energy grade lines.
Industry:Weather
A relatively low value of the zonal index that, in mid latitudes, indicates a relatively weak westerly component of wind flow (usually implying stronger north–south motion), and the characteristic weather attending such motion. A circulation pattern of this type is commonly called a low-index situation.
Industry:Weather
A relationship between the radius of a cloud droplet grown on a hygroscopic nucleus of a given dry mass, which decreases the vapor pressure with respect to a flat surface, and the radius of curvature of the drop, which increases the vapor pressure with respect to a flat surface and the equilibrium relative humidity.
Industry:Weather
A rating curve that has higher values of discharge for a certain stage when the river is rising than it does when the river is falling. Occasionally, the stage discharge curve describes a loop with each rise and fall of the river.
Industry:Weather
A radar echo from lightning. Lightning echoes are explained by the scattering of radar waves by the high concentration of free electrons created in the narrow channel of a lightning discharge. Because the electrons recombine quickly, lightning echoes have short durations, typically 1 s or less.
Industry:Weather
