Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/404
The global SF6 source inferred from long-term high precision atmospheric measurements and its comparison with emission inventories
Title: The global SF6 source inferred from long-term high precision atmospheric measurements and its comparison with emission inventories
Authors: Langenfelds, Ray L.Naegler, TobiasHeinz, R.Osusko, D.Cuevas Agulló, Emilio ORCID RESEARCHERID SCOPUSID Autor AEMETEngel, AndreasIlmberger, JohannLangenfelds, RayNeininger, BrunoRohden, Christoph vonSteele, PaulWeller, RolfWorthy, Douglas E.Zimov, Sergey A.
Keywords: Sulphur hexafluoride; Atmospheric measurements; Emission inventories; Gases de efecto invernadero
Issue Date: 2010
Publisher: European Geosciences Union
Citation: Atmospheric Chemistry and Physics. 2010, 10(6), p. 2655-2662
Publisher version: https://dx.doi.org/10.5194/acp-10-2655-2010
Abstract: Emissions of sulphur hexafluoride (SF6), one of the strongest greenhouse gases on a per molecule basis, are targeted to be collectively reduced under the Kyoto Protocol. Because of its long atmospheric lifetime (estimated as 800 to 3200 years), the accumulation of SF6 in the atmosphere is a direct measure of its global emissions. Examination of our extended data set of globally distributed high-precision SF6 observations shows an increase in SF6 abundance from near zero in the 1970s to a global mean of 6.7 ppt by the end of 2008. In-depth evaluation of our long-term data records shows that the global source of SF6 decreased after 1995, most likely due to SF6 emission reductions in industrialised countries, but increased again after 1998. By subtracting those emissions reported by Annex I countries to the United Nations Framework Convention of Climatic Change (UNFCCC) from our observation-inferred SF6 source leaves a surprisingly large gap of more than 70–80% of non-reported SF6 emissions in the last decade. This suggests a strong under-estimation of emissions in Annex I countries and underlines the urgent need for independent atmospheric verification of greenhouse gases emissions accounting.
URI: http://hdl.handle.net/20.500.11765/404
ISSN: 1680-7316
1680-7324
Appears in Collections:Artículos científicos 2010-2014


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