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| Titel |
Space-based observational approaches for carbon dioxide emissions treaty assessment |
| VerfasserIn |
Charles Miller, David Baker, Riley Duren, David Crisp |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250044338
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| Zusammenfassung |
| There is increasing demand for methodologies to support the assessment of international
treaties on carbon dioxide (CO2) emissions. The situation is complicated by the fact that the
treaty protocols under consideration require the evaluation of the net global CO2
emissions (total anthropogenic emissions less sequestration or accumulation in
long-term carbon stocks) on spatial scales of nation states (~100 km). These signals
must also be disentangled from the large natural CO2 sources and sinks with high
confidence.
The current state of the art for observationally driven estimates of global CO2 fluxes
comes from the TRANSCOM experiment and is limited to spatial resolutions of order 10,000
km (~25 global regions). Simulations of satellite data from the Greenhouse Gas Observations
Satellite (GOSAT) or the Orbiting Carbon Observatory (OCO) sensors have shown the
potential to reduce flux uncertainties by a factor of 10 or more while increasing the number
of regions to ~100. We will present a series of flux inversion simulations using
constellations of up to 4 OCO-like satellites that demonstrate the ability of space-based
measurements to deliver weekly global CO2 fluxes on a 1º x 2.5º spatial resolution (~100
km x 200 km or 30,000 global regions) with flux uncertainties that are consistent
with those needed to support the assessment of treaties regulating CO2 emissions. |
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