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| Titel |
Global CO2 fluxes from GOSAT: First results from an inter-comparison of inverse models |
| VerfasserIn |
S. Houweling, S. Basu, F. Chevallier, L. Feng, S. Maksyutov, P. Palmer, P. Peylin, Z. Poussi, H. Takagi |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250069316
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| Zusammenfassung |
| The GOSAT instrument has been in orbit since early 2009 collecting measurements of total
column CO2. After a few groups have demonstrated highly promising agreements between
their GOSAT retrievals and data from the TCCON in situ FTS network, the intriguing
question remains whether the information in the GOSAT measurements can be bring us a step
closer to understanding the global sources and sinks of CO2. Several factors determine the
outcome of this question including the following two, which we would like to investigate in
the context of this study: 1) How good do the measurements need to be, 2) Are the transport
models, that are used to translate total columns into fluxes, good enough. We have organized
a model inter-comparison experiment, in which the participants are asked to submit
inverse modeling results in a common format for the period June 2009 to June
2010. The aim is to investigate the robustness of these results, and the presence of
common signals that are of interest in the context of open questions in C-cycle
research. The experimental protocol allows full freedom in inversion set-up in order to
avoid limiting the range of possible outcomes. Each participant is free to choose a
preferred inversion method, set up and collection of measurements. We will present the
first results of this inter-comparison, including a preliminary analysis of inversion
performance, and first steps in the direction of assessing robust versus non robust results
in relation with known uncertainties of the transport models and measurements. |
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