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| Titel |
CO2, H2O, and chlorophyll fluorescence retrieved from OCO-2 measurements using a fast radiative transfer model approximating multiple scattering effects |
| VerfasserIn |
Maximilian Reuter, Heinrich Bovensmann, Michael Buchwitz, John P. Burrows, Jens Heymann, Stefan Noël, Vladimir Rozanov, Oliver Schneising |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250151334
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| Publikation (Nr.) |
 EGU/EGU2017-15903.pdf |
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| Zusammenfassung |
| Carbon dioxide is the most important anthropogenic greenhouse gas. Its global increasing
concentration in the Earth’s atmosphere is the main driver for global climate change.
In spite of its importance, there are still large uncertainties on its global sources
and sinks. Satellite measurements have the potential to reduce these surface flux
uncertainties.
However, the demanding accuracy requirements usually involve the need for precise
radiative transfer calculations in a scattering atmosphere. These can be computationally so
expensive that hundreds or thousands of CPU cores are need to keep up with the data stream
of an instrument like OCO-2. Future instruments will further increase the amount of
soundings at least by an order of magnitude.
A radiative transfer model has been developed approximating scattering effects by
multiple scattering at an optically thin scattering layer reducing the computational costs by
several orders of magnitude. The model can be used to simulate the radiance in all three
OCO-2 spectral bands allowing the simultaneous retrieval of CO2, H2O, and chlorophyll
fluorescence. First retrieval results for OCO-2 data will be presented. |
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