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Validation of farm-scale methane emissions using nocturnal boundary layer budgets

Stieger, J.; Bamberger, I.; Buchmann, N.; Eugster, W.

This study provides the first experimental validation of Swiss agricultural methane emission estimates at the farm scale. We measured CH4 concentrations at a Swiss farmstead during two intensive field campaigns in August 2011 and July 2012 to (1) quantify the source strength of livestock methane emissions using a tethered balloon system and (2) to validate inventory emission estimates via nocturnal boundary layer (NBL) budgets. Field measurements were performed at a distance of 150m from the nearest farm buildings with a tethered balloon system in combination with gradient measurements at eight heights on a 10m tower to better resolve the near-surface concentrations. Vertical profiles of air temperature, relative humidity, CH4 concentration, wind speed, and wind direction showed that the NBL was strongly influenced by local transport processes and by the valley wind system. Methane concentrations showed a pronounced time course, with highest concentrations in the second half of the night. NBL budget flux estimates were obtained via a time–space kriging approach. Main uncertainties of NBL budget flux estimates were associated with no ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/110104012
Veröffentlicht am 08.11.2018
DOI: 10.5194/acp-15-14055-2015
Zitationen: 7
Web of Science
Zitationen: 7
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen-ID: 110104012
HGF-Programm 12.02.01 (POF III, LK 01)
Erschienen in Atmospheric chemistry and physics
Band 15
Seiten 14055-14069
Nachgewiesen in Web of Science
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