- Industry: 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, ...
Colorless, inflammable gas of formula CH<sub>4</sub>; the simplest hydrocarbon. Methane enters the atmosphere as a result of the anaerobic decay of organic matter in, for example, swamps and rice paddies, and is also produced in large quantities by cattle and termites. It is formed along with coal and oil in fossil fuel deposits, and released to the atmosphere on mining. Methane is itself burned as a fuel, being the major constituent of natural gas. The atmospheric mixing ratio of methane is currently about 1. 7 parts per million and has been rising gradually since the industrial era began. The atmospheric lifetime of methane is about eight years. As well as influencing the chemistry of the atmosphere, methane is a strong greenhouse gas and an important source of stratospheric water vapor, and it contributes to global warming.
Industry:Weather
The primary means of electronic data transmission between important processing locations; usually applied in a telecommunications system where there are major processing and assimilation locations that have smaller, less capable, or more restricted communications networks providing data to them. These smaller networks are secondary or local telecommunications networks.
Industry:Weather
放電の水レベルで、またはその場所の安定した指標の上流チャネル内の自然の条件。一般的に、このコントロールは状態である臨界深度が変更のため、軽度から急な斜面に。
Industry:Weather
流星や隕石の粒子が大気を入力することによってイオン化された跡流星として知られている複合現象の一部です。流星の軌跡のドリフトのレーダーの測定を使用して推測上部中間圏風動。
Industry:Weather
領収書 1 に関連付けられている太陽放射の変化のためである気候変動) 春分点歳差運動と夏至;2） 地球の回転軸; のさまざまな傾き・ 3） 地球の軌道の変化させる偏心。
Industry:Weather
Scattering of radiation, usually electromagnetic but possibly acoustic, by an array of objects (e. G. , atoms, molecules, particles) each of which is excited to scatter (radiate) not only by an external source but also by the scattered radiation from the other objects in the array. Multiple scattering is distinguished from single scattering, an idealization strictly realized only with a single object excited by an infinitely distant source. Scattering as a consequence solely of excitation by the external source is sometimes referred to as primary scattering, the remaining scattering as secondary scattering, which is misleading in that it can be decomposed into an infinite series of primary, secondary, tertiary, and higher-order scattering. Multiple scattering can be classified according to the coherence properties of the array and the external source. For incoherent multiple scattering, phase differences of scattered waves are random, and scattered powers are additive. For coherent multiple scattering, phase differences of scattered waves are not random, and scattered fields are additive. Incoherent and coherent multiple scattering are idealizations. An example of (primarily) incoherent multiple scattering is scattering of sunlight by thick clouds. An example of (mostly) coherent multiple scattering is specular reflection by a glass of water. Scattering by a single cloud droplet is an example of scattering by a coherent array the water molecules in the droplet stick together (cohere) in the sense that the phase differences between their individual scattered waves are fixed whereas scattering by the entire cloud is incoherent in the sense that for droplets separated by random distances large compared with the wavelength, the phase differences between waves scattered by individual droplets are essentially random.
Industry:Weather
The vertical movement and intermingling of fluid from all possible source locations (neighboring and nonneighboring), to produce a mixture at some other location. The fraction of air mixing into each destination height index ''I'' from any source height ''j'' is given by a transilient matrix ''c<sub>ij</sub>''. The resulting state of the mixture is given by transilient turbulence theory. See nonlocal flux.
Industry:Weather
Blackening of ship's paint by hydrogen sulfide from decaying marine organisms, especially during El Niño.
Industry:Weather
