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  Accounting for the effect of transport errors on tracer inversions

Lin, J. C., & Gerbig, C. (2005). Accounting for the effect of transport errors on tracer inversions. Geophysical Research Letters, 32, L01802. doi:10.1029/2004GL021127.

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Lin, J. C., Autor
Gerbig, C.1, Autor           
Affiliations:
1Airborne Trace Gas Measurements and Mesoscale Modelling, Dr. habil. C. Gerbig, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497784              

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 Zusammenfassung: Errors in atmospheric transport of tracers lead to errors in estimates of tracer fluxes based upon concentration observations. Typically, such “inverse” methods either neglect transport errors or only assess their effects roughly. We describe a method to quantitatively account for transport errors by incorporating uncertainties in winds into stochastic motions of air parcels. The magnitude of errors in wind fields, as well as their spatiotemporal covariances, are determined by direct comparison of assimilated winds to radiosonde observations. These statistics of transport errors are propagated through stochastic motions of air parcels in a Lagrangian model (STILT). We illustrate this method by conducting an inverse analysis using simulated CO2 observations over the continent and examine the effect of transport errors on estimates of regional terrestrial carbon fluxes. The inverse analysis demonstrates that transport errors can cause significantly biased estimates. We show that the proposed method properly accounts for these errors.

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 Datum: 2005
 Publikationsstatus: Erschienen
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 Identifikatoren: Anderer: BGC0784
DOI: 10.1029/2004GL021127
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Titel: Geophysical Research Letters
  Kurztitel : GRL
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : American Geophysical Union
Seiten: - Band / Heft: 32 Artikelnummer: - Start- / Endseite: L01802 Identifikator: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217