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| Titel |
G3E – Geostationary Emission Explorer for Europe: mission concept |
| VerfasserIn |
André Butz, Johannes Orphal, Heinrich Bovensmann, Thomas von Clarmann, Felix Friedl-Vallon, Thiemo Knigge, Ralf Muenzenmayer, Frank Schmuelling |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250110886
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| Publikation (Nr.) |
 EGU/EGU2015-10929.pdf |
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| Zusammenfassung |
| Anthropogenic activities release various gaseous and particulate substances into the Earth’s
atmosphere affecting air quality and climate. The greenhouse gases carbon dioxide
(CO2) and methane (CH4) are particularly important drivers of man-made climate
change while ozone (O3), carbon monoxide (CO) and aerosols are major players in
tropospheric photochemistry controlling air quality. Once released to the atmosphere the
fate of man-made pollutants and climate forcers is controlled by natural removal
processes.
We present the mission concept of the Geostationary Emission Explorer for Europe (G3E).
G3E primarily aims at accurately measuring CO2 and CH4 column-average concentrations
across Europe with spatial and temporal resolution of a few kilometers and a few hours,
respectively. Such spatiotemporally dense imaging of the greenhouse gas concentration fields
above Europe is expected to boost our ability to disentangle anthropogenic emissions from
natural source and sink processes and to impose unprecedented observational constraints on
surface flux quantification. In support of the retrieval and interpretation of greenhouse gas
concentrations, G3E’s grating spectrometers cover a wide spectral range from the near
infrared into the shortwave infrared. This facilitates estimates of column-average CO and
aerosol abundances providing extra information on air-quality from a geostationary view.
A flexible pointing design further allows for selecting focus regions beyond the
European continent in order to address the surface flux budgets of other regions of
interest such as tropical Africa. We demonstrate G3E’s capabilities in terms of
prospective instrument design, observation concept, and retrieval performance. |
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