Carbon Dioxide Flux Measurement System (CO2FLX) Instrument Handbook | Zendy

Stephen Chen | Zendy; Sébastien Biraud | Zendy

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Carbon Dioxide Flux Measurement System (CO2FLX) Instrument Handbook

Author(s) -

Stephen Chen,

Sébastien Biraud

Publication year - 2011

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1020279

Subject(s) - eddy covariance , anemometer , flux (metallurgy) , sensible heat , carbon dioxide , atmospheric sciences , environmental science , gas analyzer , heat flux , wind speed , meteorology , latent heat , materials science , thermodynamics , physics , heat transfer , chemistry , organic chemistry , metallurgy , ecology , ecosystem , environmental chemistry , biology

The Southern Great Plains (SGP) carbon dioxide flux (CO2 flux) measurement systems provide half-hour average fluxes of CO2, H2O (latent heat), and sensible heat. The fluxes are obtained by the eddy covariance technique, which computes the flux as the mean product of the vertical wind component with CO2 and H2O densities, or estimated virtual temperature. A three-dimensional sonic anemometer is used to obtain the orthogonal wind components and the virtual (sonic) temperature. An infrared gas analyzer is used to obtain the CO2 and H2O densities. A separate sub-system also collects half-hour average measures of meteorological and soil variables from separate 4-m towers

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