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Carbon Dioxide Flux Measurement Systems (CO2FLX) - IOP

Instrument Categories: Atmospheric Carbon

General Overview

Picture of the Carbon Dioxide Flux Instruments (CO2FLX)

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.

IOPs Where the Instrument was Used

Primary Measurements Taken

The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes.

Mentor(s)

Marc Fischer
(510) 486-5539
mlfischer@lbl.gov

Sebastien Biraud
associate
510-486-6084
scbiraud@lbl.gov