Technical note: Laboratory evaluation of a tunable diode laser system for eddy covariance measurements of ammonia flux

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Technical note: Laboratory evaluation of a tunable diode laser system for eddy covariance measurements of ammonia flux

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dc.contributor.author Brodeur, J.J.
dc.contributor.author Warland, Jon
dc.contributor.author Staebler, Ralf M.
dc.contributor.author Wagner-Riddle, Claudia
dc.date.accessioned 2009-11-17T15:46:40Z
dc.date.available 2009-11-17T15:46:40Z
dc.date.issued 2009-02
dc.identifier.citation Brodeur, J.J., Warland, J.S., Staebler, R.M., Wagner-Riddle, C. "Technical note: Laboratory evaluation of a tunable diode laser system for eddy covariance measurements of ammonia flux." Agricultural and Forest Meteorology 149.2 (2009): 385-391 en
dc.identifier.uri http://hdl.handle.net/10214/2086
dc.description.abstract A tunable diode laser trace gas analyzer (TGA 100, Campbell Scientific, Logan, Utah) was evaluated in the laboratory for its ability to measure ammonia fluxes using the eddy covariance technique. A random noise generator was used in the laboratory to switch sampling between high and low concentration air streams to simulate a range of eddy sizes with a known input. A mechanical switching system was developed to prevent pressure fluctuations during switching associated with valves. A half-power point of 0.4 Hz was found for 50 m of sampling tubing. Resolution, determined through laboratory tests, was conservatively estimated between 0.2 and 1 μg m−2 s−1. en
dc.language.iso en en
dc.publisher Elsevier en
dc.title Technical note: Laboratory evaluation of a tunable diode laser system for eddy covariance measurements of ammonia flux en
dc.type Article en


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