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| Titel |
Anthropogenic and natural methane fluxes in Switzerland synthesized within a spatially explicit inventory |
| VerfasserIn |
R. V. Hiller, D. Bretscher, T. DelSontro, T. Diem, W. Eugster, R. Henneberger, S. Hobi, E. Hodson, D. Imer, M. Kreuzer, T. Künzle, L. Merbold, P. A. Niklaus, B. Rihm, A. Schellenberger, M. H. Schroth, C. J. Schubert, H. Siegrist, J. Stieger, N. Buchmann, D. Brunner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 11, no. 7 ; Nr. 11, no. 7 (2014-04-09), S.1941-1959 |
| Datensatznummer |
250117351
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| Publikation (Nr.) |
 copernicus.org/bg-11-1941-2014.pdf |
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| Zusammenfassung |
| We present the first
high-resolution (500 m × 500 m) gridded methane
(CH4) emission inventory for Switzerland, which integrates 90 % of
the national emission totals reported to the United Nations Framework
Convention on Climate Change (UNFCCC) and recent CH4 flux studies
conducted by research groups across Switzerland. In addition to anthropogenic
emissions, we also include natural and semi-natural CH4 fluxes, i.e.,
emissions from lakes and reservoirs, wetlands, wild animals as well as uptake
by forest soils. National CH4 emissions were disaggregated using
detailed geostatistical information on source locations and their spatial
extent and process- or area-specific emission factors. In Switzerland, the
highest CH4 emissions in 2011 originated from the agricultural sector
(150 Gg CH4 yr−1), mainly produced by ruminants
and manure management, followed by emissions from waste management
(15 Gg CH4 yr−1) mainly from landfills and the
energy sector (12 Gg CH4 yr−1), which was
dominated by emissions from natural gas distribution. Compared with the
anthropogenic sources, emissions from natural and semi-natural sources were
relatively small (6 Gg CH4 yr−1), making up only
3% of the total emissions in Switzerland. CH4 fluxes from
agricultural soils were estimated to be not significantly different from zero
(between −1.5 and 0 Gg CH4 yr−1), while forest
soils are a CH4 sink (approx.
−2.8 Gg CH4 yr−1), partially offsetting other
natural emissions. Estimates of uncertainties are provided for the different
sources, including an estimate of spatial disaggregation errors deduced from
a comparison with a global (EDGAR v4.2) and an European (TNO/MACC) CH4
inventory. This new spatially explicit emission inventory for Switzerland
will provide valuable input for regional-scale atmospheric modeling and
inverse source estimation. |
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