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Flux footprint

Index Flux footprint

Flux footprint (also known as atmospheric flux footprint or footprint) is an upwind area where the atmospheric flux measured by an instrument is generated. [1]

16 relations: Diffusion equation, Eddy covariance, Evapotranspiration, Flux, FluxNet, Gas, Heat, Lagrangian and Eulerian specification of the flow field, Momentum, Prairie, Surface area, Surface roughness, Thermal stability, Turbulence, Water, Windward and leeward.

Diffusion equation

The diffusion equation is a partial differential equation.

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Eddy covariance

The eddy covariance (also known as eddy correlation and eddy flux) technique is a key atmospheric measurement technique to measure and calculate vertical turbulent fluxes within atmospheric boundary layers.

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Evapotranspiration

Evapotranspiration (ET) is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere.

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Flux

Flux describes the quantity which passes through a surface or substance.

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FluxNet

FluxNet is a global network of micrometeorological tower sites that use eddy covariance methods to measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere.

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Gas

Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma).

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Heat

In thermodynamics, heat is energy transferred from one system to another as a result of thermal interactions.

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Lagrangian and Eulerian specification of the flow field

In classical field theory the Lagrangian specification of the field is a way of looking at fluid motion where the observer follows an individual fluid parcel as it moves through space and time.

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Momentum

In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.

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Prairie

Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the dominant vegetation type.

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Surface area

The surface area of a solid object is a measure of the total area that the surface of the object occupies.

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Surface roughness

Surface roughness often shortened to roughness, is a component of surface texture.

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Thermal stability

Thermal stability also describes, as defined by Schmidt (1928), the stability of a water body and its resistance to mixing.

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Turbulence

In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity.

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Water

Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.

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Windward and leeward

Windward is the direction upwind from the point of reference, alternatively the direction from which the wind is coming.

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References

[1] https://en.wikipedia.org/wiki/Flux_footprint

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