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| Titel |
Interannual variability of the regional CO2 and CH4 fluxes estimated with GOSAT observations |
| VerfasserIn |
Shamil Maksyutov, Hiroshi Takagi, Heon-Sook Kim, Makoto Saito, Kazuo Mabuchi, Tsuneo Matsunaga, Akihiko Ito, Dmitry Belikov, Tomohiro Oda, Vinu Valsala, Isamu Morino, Yukio Yoshida, Tatsuya Yokota |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250096372
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| Publikation (Nr.) |
 EGU/EGU2014-11872.pdf |
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| Zusammenfassung |
| GOSAT Level 4 products – monthly regional surface flux estimates by inverse modeling from
CO2 and CH4 GOSAT column-averaged mixing ratios and ground-based observational data
using a global atmospheric transport model - have been updated recently to cover the 2-year
period starting June 2009. This temporal extension provides look at the interannual flux
variability including events of CO2 and CH4 emissions from a large-scale climate anomaly
and resultant forest fires in Russia in 2010. Higher emissions of CO2 and CH4 in western
Russia in the summer of 2010 are estimated when GOSAT observations are also included in
the inverse modeling compared to just using ground-based data. The estimated summer
emissions in 2010 are also higher than in the same season of the adjacent years. GOSAT
compliments the ground-based networks by observing the concentration response to
emissions closer to fire locations, resulting in the inverse models identifying emission
regions more accurately. Elsewhere, GOSAT-aided flux estimates point to higher CH4
emissions (compared to ground-based only estimates) in the remote sub-tropical regions
of the South America, Africa and South-East Asia. Higher emissions over South
America can be attributed to biomass burning and anthropogenic sources, while in
South-East Asia those are likely to be caused by agriculture and natural ecosystems. |
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