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Terms & Acronyms

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Term	Vocabulary	Vocabulary Type	Definitions
evapotranspiration	Nearshore Terrestrial Ecosystems Glossary	Glossary and Key Word List	Definition: Evaporation of water from soil, and transpiration of water from plants.
Evapotranspiration	Watershed Protection Glossary	Glossary and Key Word List	Definition: The release of water vapor into the atmosphere by the combination of direct evaporation and transpiration by plants.
Evapotranspiration	Heat Island Effect Glossary	Glossary and Key Word List	Definition: Plants absorb water through their roots and emit it through their leaves. This movement of water is called "transpiration." Evaporation, the conversion of water from a liquid to a gas, also occurs from the soil around vegetation and from trees and vegetation as they intercept rainfall on leaves and other surfaces. Together, these processes are referred to as evapotranspiration, which lowers temperatures by using heat from the air to evaporate water.
Evapotranspiration	Greening EPA Glossary	Glossary and Key Word List	Definition: The loss of water from the soil both by evaporation and by transpiration from the plants growing in the soil.
Evapotranspiration	Glossary of Climate Change Terms	Glossary and Key Word List	Definition: The combined process of evaporation from the Earth's surface and transpiration from vegetation.
Evapotranspiration	N-STEPS Online Glossary of Terms	Glossary and Key Word List	Definition: The loss of water from the soil both by evaporation and by transpiration from the plants growing in the soil.
Evapotranspiration	Drinking Water Technical & Legal Terms	Glossary and Key Word List	Definition: (ee-VAP-o-TRANS-purr-A-shun) The combined processes of evaporation and transpiration. It can be defined as the sum of water used by vegetation and water lost by evaporation.
Evapotranspiration	Terms of Environment	Glossary and Key Word List	Definition: The loss of water from the soil both by evaporation and by transpiration from the plants growing in the soil.
Evapotranspiration	Water Conservation Plan Guidelines Glossary	Glossary and Key Word List	Definition: Water losses from the surface of soils and plants.
evapotranspiration	CMAQ Glossary	Glossary and Key Word List	Definition: The sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere. Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, and water bodies. Transpiration accounts for the movement of water within a plant and the subsequent loss of water as vapor through stomata in its leaves.
Evapotranspiration	GlobalChange.gov Glossary	Glossary and Key Word List	Definition: Evaporation of water from soil and plant leaves.
Evapotranspiration	Greenhouse Gas Emissions	Glossary and Key Word List	Definition: The loss of water from the soil by evaporation and by transpiration from the plants growing in the soil, which rises with air temperature.
Evapotranspiration	EPA EV-Natural Environments-Natural Phenomena	Taxonomy	Definition 1: The sum of evaporation and transpiration. [USGS Water Science Glossary of Terms] Definition 2: The loss of water from the soil both by evaporation and by transpiration from the plants growing in the soil. [Chesapeake Bay Glossary] Definition 3: Discharge of water from the earth's surface to the atmosphere by evaporation from lakes, streams and soil surfaces and by transpiration from plants. Also known as fly-off. [GEneral Multilingual Environmental Thesaurus] Definition 4: Sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere. Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, and water bodies. Transpiration accounts for the movement of water within a plant and the subsequent loss of water as vapor through stomata in its leaves. [Community Multiscale Air Quality (CMAQ) Glossary] Definition 5: The combined process of evaporation from the Earth's surface and transpiration from vegetation.[Glossary of Climate Change Terms] Definition 6: Water losses from the surface of soils and plants.[Water Conservation Glossary] Definition 7: Sum of evaporation and plant transpiration. Potential evapotranspiration is the amount of water that could be evaporated or transpired at a given temperature and humidity. if there was plenty of water available. Actual evapotranspiration can not be any greater than precipitation. and will usually be less because some water will run off in rivers and flow to the oceans. If potential evapotranspiration is greater than actual precipitation. then soils are extremely dry during at least a major part of the year. [NOAA Climate Program Office Glossary]

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