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AGU: Geophysical Research Letters

 

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  • Atmospheric Composition and Structure: Biosphere/atmosphere interactions
  • Atmospheric Composition and Structure: Instruments and techniques

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, 1025, 4 PP., 2002
doi:10.1029/2001GL013429

N2O/222Rn - soil flux calibration in the stable nocturnal surface layer

Franz Conen

Institute of Ecology and Resource Management, University of Edinburgh, UK

Albrecht Neftel

Federal Research Station for Agroecology and Agriculture (FAL), Bern-Liebefeld, Switzerland

Martin Schmid

Federal Research Station for Agroecology and Agriculture (FAL), Bern-Liebefeld, Switzerland

Bernhard E. Lehmann

Physics Institute, University of Bern, Switzerland

Concentration changes of N2O and 222Rn were monitored in the surface layer above a grass sward during the first half of two calm nights. N2O flux on a local or field scale was then estimated from the ratio of the concentration differences between 0.1m and 0.4m height and the directly measured 222Rn flux. This estimate (∼7 g N2O-N ha−1d−1) was between the N2O flux on a larger scale (∼4.5 g N2O-N ha−1d−1), as estimated from changes in the N2O/222Rn ratio over time, and the small scale flux on the grass plot (∼50 g N2O-N ha−1d−1) as measured with closed chambers.

Published 26 January 2002.

Citation: Conen, F., A. Neftel, M. Schmid, and B. E. Lehmann (2002), N2O/222Rn - soil flux calibration in the stable nocturnal surface layer, Geophys. Res. Lett., 29(2), 1025, doi:10.1029/2001GL013429.

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