- 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, ...
Chemical family, comprising hydrogen atoms (H), hydroxyl radicals (OH), and hydroperoxyl radicals (HO<sub>2</sub>), that participates in ozone destruction in the stratosphere. Due to the rapid interconversion of these three species, they are normally treated as one lumped species and partitioned according to the local chemical environment.
Industry:Weather
Family of alkane molecules, formula C<sub>8</sub>H<sub>18</sub>. Several different isomers exist with different structures but the same chemical formula. One of the isomers, 2,3,4-trimethylpentane, is the standard for knock properties in automobile engines. The octane rating measures the percentage of 2,3,4-trimethylpentane in a mixture with heptane that would give the same knock characteristics as the fuel under test.
Industry:Weather
A fraction equal to one-eighth of the celestial dome, used in the coding of cloud amounts in synoptic meteorological observations.
Industry:Weather
The study of the sea, embracing and integrating all knowledge pertaining to the sea's physical boundaries, the chemistry and physics of seawater, and marine biology.
Industry:Weather
The degree to which a point on the earth's surface is in all respects subject to the influence of the sea; the opposite of continentality. Oceanicity usually refers to climate and its effects. One measure for this characteristic is the ratio of the frequencies of maritime to continental types of air mass.
Industry:Weather
1. In meteorology, the process of formation of an occluded front. Some persons restrict the use of this term to the usual case where the process begins at the apex of a wave cyclone; when the process begins at some distance from the apex, they call it seclusion. 2. Same as occluded front.
Industry:Weather
As defined by the World Meteorological Organization, a specific maritime location occupied by a ship equipped and staffed to observe weather and sea conditions and report the observations by international exchange. Compare ocean station; see station.
Industry:Weather
As defined by the International Civil Aviation Organization, a specifically located area of ocean surface, roughly square, and 200 nautical miles on a side. An ocean station vessel on patrol is said to be “on station” when it is within the perimeter of the area. Compare ocean weather station; see station.
Industry:Weather
Any process or series of processes by which parcels of ocean water with different properties are brought into intimate small-scale contact, so that molecular diffusion erases the differences between them. There is a distinction between stirring, which moves the water parcels into intimate contact, and mixing, the final process of molecular diffusion that blends the water parcels together. The term “mixing” is currently used to describe all of the processes, including molecular diffusion.
Industry:Weather
