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| Titel |
A tethered-balloon PTRMS sampling approach for surveying of landscape-scale biogenic VOC fluxes |
| VerfasserIn |
J. P. Greenberg, J. Peñuelas, A. Guenther, R. Seco, A. Turnipseed, X. Jiang, I. Filella, M. Estiarte, J. Sardans, R. Ogaya, J. Llusià, F. Rapparini |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 7 ; Nr. 7, no. 7 (2014-07-23), S.2263-2271 |
| Datensatznummer |
250115856
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| Publikation (Nr.) |
 copernicus.org/amt-7-2263-2014.pdf |
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| Zusammenfassung |
Landscape-scale fluxes of biogenic gases were surveyed by deploying a 100 m
Teflon tube attached to a tethered balloon as a sampling inlet for a fast-response proton-transfer-reaction mass spectrometer (PTRMS). Along with
meteorological instruments deployed on the tethered balloon and a 3 m tripod
and outputs from a regional weather model, these observations were used to
estimate landscape-scale biogenic volatile organic compound fluxes with two
micrometeorological techniques: mixed layer variance and surface layer
gradients. This highly mobile sampling system was deployed at four field
sites near Barcelona to estimate landscape-scale biogenic volatile organic compound (BVOC) emission factors in a
relatively short period (3 weeks).
The two micrometeorological techniques were compared with emissions
predicted with a biogenic emission model using site-specific emission
factors and land-cover characteristics for all four sites. The methods
agreed within the uncertainty of the techniques in most cases, even though
the locations had considerable heterogeneity in species distribution and
complex terrain. Considering the wide range in reported BVOC emission
factors for individual vegetation species (more than an order of magnitude),
this temporally short and inexpensive flux estimation technique may be
useful for constraining BVOC emission factors used as model inputs. |
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