Search Results
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| definition | Ground water in its broadest sense includes all subsurface water whether in its liquid, solid or gaseous state, provided it is not chemically combined with the minerals present. In practice, it is all subsurface water that participates in the hydrological cycle. |
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| definition | Pertains to all water present above the substrate or soil surface including water contained in an ocean, river, stream, lake, pond, lagoon, or impoundment reservoir. |
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| definition | Water quality refers to the physical, chemical, and biological characteristics of water with respect to its suitability for a particular use. Water chemistry refers to the chemical characteristics of water. |
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| definition | The range of dynamic natural bodies composed of mineral and organic materials and living forms in which plants grow. |
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| definition | Suspension of particles of condensed matter (liquid, solid, or mixed) in a carrier gas (usually air). Aerosols are important in the atmosphere as nuclei for the condensation of water droplets and ice crystals, as participants in various chemical cycles, and as absorbers and scatterers of solar radiation, thereby influencing the radiation budget of the earth-atmosphere system, which in turn influences the climate on the surface of the Earth. |
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| definition | The study of air pollutants in the atmosphere. |
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| definition | A measure of height, especially of great height, as a mountain top or aircraft flight level. In meteorology, altitude is used almost exclusively with respect to the height of an airborne object above the earth’s surface, above a constant pressure surface, or above mean sea level. |
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| definition | A visible aggregate of minute water droplets and/or ice crystals in the atmosphere above the Earth’s surface. |
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| definition | All liquid or solid phase aqueous particles that originate in the atmosphere and fall to the earth’s surface. |
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| definition | Measurements of chemical constituents in the atmosphere including the major (non-H2O) greenhouse gases (CO2, CH4, CFC, N2O). |