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Meteorology
| TeRmS | DeFiNiTiOnS |
|---|---|
| Atmosphere | the gaseous envelope surrounding the earth; the air. |
| Troposphere | the lowest layer of the atmosphere, 6 miles (10 km) high in some areas and as much as 12 miles (20 km) high in others |
| Ionosphere | the region of the earth's atmosphere between the stratosphere and the exosphere, consisting of several ionized layers and extending from about 50 to 250 miles (80 to 400 km) above the surface of the earth. |
| Ozone Layer | the layer of the upper atmosphere where most atmospheric ozone is concentrated, from about 8 to 30 miles (12 to 48 km) above the earth, |
| Chlorofluorocarbon | any of several volatile, inert, saturated compounds of carbon, fluorine, chlorine, and hydrogen: used as refrigerants, foam-blowing agents, solvents |
| Radiation | the process in which energy is emitted as particles or waves. |
| Conduction | the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts |
| Convection | the vertical transport of atmospheric properties, especially upward (distinguished from advection). |
| Hydrosphere | the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. |
| Condensation | the process by which atmospheric water vapor liquefies to form fog, clouds, or the like, or solidifies to form snow or hail. |
| Coriolis effect | the apparent deflection (Coriolis acceleration) of a body in motion with respect to the earth, as seen by an observer on the earth, attributed to a fictitious force (Coriolis force) but actually caused by the rotation of the earth |
| Jet Stream | strong, generally westerly winds concentrated in a relatively narrow and shallow stream in the upper troposphere of the earth. |
| Sea breeze | a thermally produced wind blowing from a cool ocean surface onto adjoining warm land. |
| Land breeze | a coastal breeze blowing at night from land to sea, caused by the difference in the rate of cooling of their respective surfaces. |
| Humidity | condition; moistness; dampness. |
| Dew point | the temperature to which air must be cooled, at a given pressure and water-vapor content, for it to reach saturation; the temperature at which dew begins to form. |
| Precipitation | falling products of condensation in the atmosphere, as rain, snow, or hail. |
| Weather Front | boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. |
| Weather Station Model | is a symbolic illustration showing the weather occurring at a given reporting station. Meteorologists created the station model to find a number of weather elements in a small space on weather maps. |
| Climate | the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. |
| El nino | a warm ocean current of variable intensity that develops after late December along the coast of Ecuador and Peru and sometimes causes catastrophic weather conditions. |
| Global Warming | an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. |
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