The processes by which chemical constituents move from the atmosphere to the Earth's surface. These processes include precipitation (wet deposition, such as rain, cloud or fog), as well as particle and gas deposition (dry deposition).
A process whereby pollutants are transported from a ground-based source and through atmospheric processes are deposited on a distant land or water surface.
Sedimentation of solids, liquids, or gaseous materials from the air.
the addition of elements or substances found in the air to the surface of the earth.
When the air pollution hits the earth surface. Air pollution washed out of the sky by rain or snow is called "wet deposition." When air pollution deposits without benefit of rain its called "dry deposition."
Airborne pollutants which are deposited back on land and water either in wet form (i.e., in precipitation) or dry form (i.e., as particles), often having undergone chemical transformation and often having been transported great distances in the atmosphere.
includes wet precipitation such as snow, rain, or hail, as well as dry deposition from airborne particles like smoke and dust.
The contribution of atmospheric pollutants or chemical constituents to land or water ecosystems. Deposition can occur as a result of human activities (e.g. fossil fuel combustion, industrial processes and transportation) or natural processes (e.g. volcanic activity).
The deposit of airborne toxic substances, particularly persistent toxic substances that may have significant adverse effects on environment quality.
Particles from the atmosphere deposited on the earth's surface either in wet or dry form.
Process by which contaminants in the air return to the earth's surface. Air pollution washed out of the sky by rain or snow is called “wet deposition.” When air pollution deposits without benefit of rain, it is called “dry deposition.
pollutants deposited from the air including nitrogen and sulfur compounds.
The process by which particles suspended in the air are deposited by precipitation or wind in the ocean, rivers, or on land.
The transfer of substances from the air to the surface of the Earth, either in wet form (rain, fog, snow, dew, frost, hail) or in dry form (gases, aerosols, particles).
the process whereby air pollutants are deposited on land and water.
Pollution that travels through the air and falls on land and water. Also see "Clean Air Act" and "Great Lakes Toxic Reduction Effort."