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| Titel |
Early Results from the NASA Orbiting Carbon Observatory-2 (OCO-2) |
| VerfasserIn |
David Crisp, Annmarie Eldering |
| 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 |
250107112
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| Publikation (Nr.) |
 EGU/EGU2015-6804.pdf |
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| Zusammenfassung |
| The Orbiting Carbon Observatory-2 (OCO-2) is NASA’s first satellite designed to collect the
measurements needed to estimate the column-averaged carbon dioxide (CO2) dry air mole
fraction, XCO2, with the sensitivity, accuracy, and resolution needed to characterize the CO2
sources and sinks on regional scales over the globe. OCO-2 was successfully launched from
Vandenberg Air Force Base in California on July 2, 2014 and joined the 705-km Afternoon
Constellation (A-Train) on August 3, 2014. The three-channel imaging grating
spectrometer was then cooled to its operating temperatures and a comprehensive series of
characterization and calibration activities were initiated. Since early October 2014, the
observatory has been routinely collecting almost 1 million soundings over the sunlit
hemisphere each day. Early cloud screening results indicate that 15-30% of these
measurements may be sufficiently cloud free to yield precise estimates of XCO2. Initial
deliveries of calibrated, geo-located OCO-2 spectra to the NASA Goddard Earth
Science Data and Information Services Center (GES DISC) began on December 30,
2014. Preliminary estimates of XCO2 retrieved from these data are currently being
validated against observations from the Total Carbon Column Observing Network
(TCCON) and other standards. Routine deliveries XCO2 and other products, including
surface pressure and chlorophyll fluorescence, to the GES DISC are expected to
begin before the end of March, 2015. This presentation will summarize the status of
the OCO-2 mission and the coverage, resolution, and accuracy of its early results. |
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