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dc.contributor.authorBousquet, P.en_US
dc.contributor.authorYver, C.en_US
dc.contributor.authorPison, I.en_US
dc.contributor.authorLi, Y. S.en_US
dc.contributor.authorFortems, A.en_US
dc.contributor.authorHauglustaine, D.en_US
dc.contributor.authorSzopa, S.en_US
dc.contributor.authorRayner, P. J.en_US
dc.contributor.authorNovelli, P.en_US
dc.contributor.authorLangenfelds, R.en_US
dc.contributor.authorSTEELE, P.en_US
dc.contributor.authorRamonet, M.en_US
dc.contributor.authorSchmidt, M.en_US
dc.contributor.authorFoster, P.en_US
dc.contributor.authorMorfopoulos, C.en_US
dc.contributor.authorCiais, P.en_US
dc.date.accessioned2014-05-22T07:00:55Z
dc.date.available2014-05-22T07:00:55Z
dc.date.issued2011en_US
dc.identifier.citationBousquet, P., Yver, C., Pison, I., Li, Y. S., Fortems, A., Hauglustaine, D. et al. (2011). A three-dimensional synthesis inversion of the molecular hydrogen cycle: sources and sinks budget and implications for the soil uptake. Journal of Geophysical Research: Atmospheres, 116, doi:10.1029/2010JD014599.en_US
dc.identifier.issn2156–2202en_US
dc.identifier.urihttp://hdl.handle.net/11343/32769
dc.description© 2011 American Geophysical Unionen_US
dc.description.abstractOur understanding of the global budget of atmospheric hydrogen (H2) contains large uncertainties. An atmospheric Bayesian inversion of H2 sources and sinks is presented for the period 1991-2004, based on a two networks of flask measurement stations. The types of fluxes and the spatial scales potentially resolvable by the inversion are first estimated from an analysis of the correlations of errors between the different processes and regions emitting or absorbing H2. Then, the estimated budget of H2 and its uncertainties is presented and discussed, for five groups of fluxes and three groups of large regions, in terms of mean fluxes, seasonal and interannual variations, and long-term trends. One main focus of the study is the improvement of the estimate of H2 soil uptake, which is the largest sink of H2. Various sensitivity tests are performed defining an ensemble of more than 20 inversions. We show that inferring a robust estimate of the H2 soil uptake requires to prescribe the prior magnitude of some other sources and sinks with a small uncertainty. Doing so an estimate of the H2 soil uptake of -62 ± 3 Tg y−1 is inferred for the period 1991-2004 (the uncertainty is the residual error after inversion). The inferred soil H2 sink presents a negative long-term trend that is qualitatively consistent with a bottom-up process-based model.en_US
dc.languageengen_US
dc.publisherAmerican Geophysical Unionen_US
dc.subjectatmospheric inversionen_US
dc.subjectmolecular hydrogenen_US
dc.subjectsources and sinksen_US
dc.subjectH2 budgeten_US
dc.subjectH2 soil uptakeen_US
dc.titleA three-dimensional synthesis inversion of the molecular hydrogen cycle: sources and sinks budget and implications for the soil uptakeen_US
dc.typeJournal Articleen_US
melbourne.peerreviewPeer Revieweden_US
melbourne.affiliationThe University of Melbourneen_US
melbourne.affiliation.departmentScience - Earth Sciencesen_US
melbourne.publication.statusPublisheden_US
melbourne.source.titleJournal of Geophysical Research: Atmospheresen_US
melbourne.source.volume116en_US
melbourne.elementsidNA
melbourne.contributor.authorRayner, Peter
melbourne.accessrightsOpen Access


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