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Watersheds

For 330 Watersheds, From Chapin et al 2011

TermDefinition
Base flow Background stream flow from groundwater input in the absence of recent storm events.
Canopy interception Fraction of precipitation that does not reach the ground.
Coupling Effectiveness of atmospheric mixing between the canopy and the atmosphere.
Evapotranspiration Water loss from an ecosystem by transpiration and surface evaporation; equivalent to latent heat flux, but expressed in water units.
Infiltration Movement of water into the soil.
Leaf Area Index Projected (i.e., one side of a flat leaf) leaf area per unit ground area.
Precipitation Water input to an ecosystem as rain and snow.
Rooting depth The depth to which plants are able to grow roots
Runoff Water loss from an ecosystem in streams and rivers; also known as discharge.
Stemflow Water that flows down stems to the ground.
Sublimation Vaporization of a solid such as snow.
Surface conductance Potential of the leaf and soil surfaces in the ecosystem to lose water; similar to stomatal conductance but applied at the canopy scale.
Surface roughness Vertical irregularities in the height of the canopy surface.
Throughfall Water that drops from the canopy to the ground.
Watershed A river or stream and all the terrestrial surfaces that drain into it; synonymous with catchment or drainage basin.
Created by: mdcoleman