- 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, ...
A measure of the extinction due to absorption of monochromatic radiation as it traverses a medium. Usually expressed as a volume absorption coefficient, kv, with units of reciprocal length (i. E. , area per unit volume), but also as a mass absorption coefficient, km, with units of area per unit mass. The two are related by kv = km, where is the density of the absorber.
Industry:Weather
1. The process in which incident radiant energy is retained by a substance. A further process always results from absorption, that is, the irreversible conversion of the absorbed radiation into some other form of energy within and according to the nature of the absorbing medium. The absorbing medium itself may emit radiation, but only after an energy conversion has occurred. See attenuation. 2. The taking up or assimilation of one substance by another. The substances may combine chemically, or the absorption may just correspond to a physical solubility. See Henry's law.
Industry:Weather
Solar radiation absorbed by the atmosphere's constituent gases, suspended material, clouds, or by the earth's surface.
Industry:Weather
Used mostly by chemists, the negative logarithm (base 10) of the transmittance of an absorbing sample, often corrected for reflection by its container. Despite its name, absorbance is a consequence of both scattering and absorption, although scattering is usually assumed to be negligible. To within a constant multiplier, absorbance is absorption optical thickness and depends on the physical thickness of the sample.
Industry:Weather
The difference between the highest and lowest temperature observed at a location.
Industry:Weather
Different from normal in whatever sense the latter term is used. When normal signifies typical, abnormal means unusual, lying outside the range of common occurrence. When normal signifies a mean or median value, abnormal implies a deviation, however slight, from the mean or median. Compare anomalous.
Industry:Weather
