- Industry: Weather
- Number of terms: 60695
- Number of blossaries: 0
- Company Profile:
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 change in the direction of the wind that takes place either in time or in space, for example, the change from easterlies to westerlies or westerlies to easterlies caused by the stratospheric quasi-biennial oscillation and the change from easterlies to westerlies with altitude observed in the troposphere of the central equatorial Pacific.
Industry:Weather
A ceiling condition that exists 1) when the total sky cover is less than 0. 6; 2) when the total transparent sky cover is 0. 5 or more; or 3) when surface-based obscuring phenomena are classed as partial obscuration (i.e., obscures 0. 9 or less of the sky) and no layer aloft is reported as broken or overcast.
Industry:Weather
A budget of the incoming and outgoing water from a region, including rainfall, evaporation, runoff, and seepage; often used to estimate evapotranspiration.
Industry:Weather
A calorimetric radiation instrument of historic interest used for the measurement of the amount of outgoing heat radiation from the earth during an interval of time. The time integration is performed by allowing the radiation to fall on an uninsulated vessel containing a volatile liquid. The amount of liquid distilled into a connected insulated vessel is a measure of the incident radiation. See radiometer.
Industry:Weather
A body of water with a common formation history, for example, convection caused by surface cooling, having its origin in a particular region of the ocean. Water masses are identified by their temperature, salinity, and other properties such as nutrients or oxygen content. They have exclusive occupation of an oceanic region only in their formation region; elsewhere they share the ocean with other water masses with which they mix. Just as air masses in the atmosphere, water masses are physical entities with a measurable volume.
Industry:Weather
A balloon of tetrahedron shape made from a cylinder of plastic film. The cylinder is sealed orthogonally at the two ends, producing a low-cost balloon that simulates a sphere.
Industry:Weather
1. Waves having similar direction and length in the sense that they correspond to the same peak in the wave spectrum. The sea state of ocean surface waves is often composed of a number of superimposed wave systems. See wave group, wave train. 2. See cyclone family.
Industry:Weather
1. To melt a substance, ice for example, by warming it to a temperature greater than the melting point of the substance, or to have frozen contents melted. 2. To free something from the binding action of ice by warming it to a temperature above the melting point of ice. 3. A warm spell when ice and snow melt, for example, “January thaw. ”
Industry:Weather
1. Total water per unit area required by a crop for normal growth. 2. In plant physiology, the same as transpiration ratio.
Industry:Weather
