Eddy flux measurements of methane over the fen \’Murnauer Moos\’, 11°11\’E, 47°39\’N, using a fast tunable diode laser spectrometer

Year: 2001

Authors: Kormann R., Müller H., Werle P.

Autors Affiliation: Max-Planck-Insitut Für Chemie, J.J.-Becher-Weg 27, 55128 Mainz, Germany; Eulenacker 19, 22175 Hamburg, Germany; Fraunhofer Institut Atmosphärische Umweltforschung, Kreuzeckbahnstr. 19, 82467 Garmisch Partenkirchen, Germany

Abstract: Eddy covariance measurements of methane were carried out over the fen \’Murnauer Moos\’ in the south of Germany in order to evaluate the performance of a newly developed eddy covariance measurement system, based on a frequency-modulated tunable diode laser spectrometer as a fast chemical sensor. During a six-day period, an average daytime methane emission of (5.4±1.8)mgCH 4 m -2 h -1 was measured. We find this value moderate, considering the favorable meteorological and soil conditions for methane emission. Diurnal cycles of the fluxes of methane and carbon dioxide as well as of sensible and latent heat are presented. Results are discussed in terms of relevant micrometeorological quantities, and quality control procedures based on Allan variance and spectral analysis are discussed. Copyright

Journal/Review: ATMOSPHERIC ENVIRONMENT

Volume: 35 (14)      Pages from: 2533  to: 2544

KeyWords: Carbon dioxide; Chemical sensors; Fluxmeters; Frequency modulation; Semiconductor lasers; Soil pollution; Spectrum analysis, Eddy flux measurements, Methane, carbon dioxide; methane, covariance analysis; eddy; fen; laser method; methane; sensor, atmosphere; circadian rhythm; concentration (parameters); controlled study; covariance; diode laser; emission; frequency; Germany; heat; measurement; meteorology; physical parameters; priority journal; quality control; review; sensor; soil; spectrometer; turbulent flow, (South); Germany
DOI: 10.1016/S1352-2310(00)00424-6

ImpactFactor: 2.317
Citations: 30
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