- 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 meteorological instrument package that measures vertical profiles of atmospheric winds and either temperature or density upon descent after ejection from a rocket at or near apogee. Rocketsondes reach altitudes above those typical for balloon-borne radiosondes.
Industry:Weather
A mercury-in-glass thermometer that records temperature upon being inverted and thereafter retains its reading until returned to the first position. It consists of a conventional bulb connected to a capillary in which a constriction is placed so that upon reversal the mercury column breaks off in a reproducible manner. The mercury runs down into a smaller bulb at the other end of the capillary, which is graduated to read temperature. A 360° turn in a locally widened portion of the capillary serves as a trap to prevent further addition of mercury if the thermometer is warmed and the mercury expands past the break-off point. The remote-reading potentialities of reversing thermometers make them particularly suitable for use in measuring temperatures at depths in the sea. In this application, both protected thermometers and unprotected thermometers are used, each of which is provided with an auxiliary thermometer. They are generally used in pairs in Nansen bottles. They are usually read to 0. 01°C, and after the proper corrections have been applied, their readings are considered reliable to 0. 02°C. Details of the correction procedure are given in Lafond's Tables.
Industry:Weather
A Mediterranean Water mass originating in the Red Sea, where it has a temperature of 22°C and a salinity above 39 psu. It spreads, much diluted, at a depth between 600 and 800 m in the Arabian Sea and is found at a depth between 1000 and 1100 m south of Madagascar.
Industry:Weather
A medium that has numerous interstices, whether connected or isolated.
Industry:Weather
A member of the alkene family, formula C<sub>3</sub>H<sub>6</sub>. Major sources include fuel combustion, biomass burning, and the oceans.
Industry:Weather
A mercury barometer arranged so that the position of the upper or lower meniscus may be measured photographically. In one design the image of the meniscus is formed on a rotating drum covered with sensitized paper so that a continuous record is obtained of pressure as a function of time. See barograph.
Industry:Weather
A mercury barometer so constructed that the upper and lower mercury surfaces have the same diameter. It is not a standard meteorological instrument, but is sometimes utilized for special purposes. See float barograph.
Industry:Weather
A Mediterranean Water mass originating in the Persian Gulf, where it has a temperature above 20°C and a salinity above 38 psu. It spreads, much diluted, at 250 m in the Arabian Sea and is found at a depth of 500–600 m south of Madagascar.
Industry:Weather
A measure of the strength of the easterly wind between the latitudes of 55° and 70° N. The index is computed from the average sea level pressure difference between these latitudes and is expressed as the east to west component of geostrophic wind to a tenth of a meter per second. Compare zonal index, temperate-westerlies index, subtropical-easterlies index.
Industry:Weather
A measure of topographic texture based on the ratio of the number of stream segments per unit area of the basin.
Industry:Weather
