Influence of differences in current GOSAT XCO2 retrievals on surface flux estimation

被引：39

作者：

Takagi, Hiroshi ^{[1
]}

Houweling, Sander ^{[2
,3
]}

Andres, Robert J. ^{[4
]}

Belikov, Dmitry ^{[1
,5
]}

Bril, Andrey ^{[1
]}

Boesch, Hartmut ^{[6
]}

Butz, Andre ^{[7
]}

Guerlet, Sandrine ^{[2
]}

Hasekamp, Otto ^{[2
]}

Maksyutov, Shamil ^{[1
]}

Morino, Isamu ^{[1
]}

Oda, Tomohiro ^{[8
,9
]}

O'Dell, Christopher W. ^{[8
]}

Oshchepkov, Sergey ^{[1
]}

Parker, Robert ^{[6
]}

Saito, Makoto ^{[1
]}

Uchino, Osamu ^{[1
]}

Yokota, Tatsuya ^{[1
]}

Yoshida, Yukio ^{[1
]}

Valsala, Vinu ^{[10
]}

机构：

[1] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan

[2] Netherland Inst Space Res, Utrecht, Netherlands

[3] Inst Marine & Atmospher Res Utrecht, Utrecht, Netherlands

[4] Oak Ridge Natl Lab, Oak Ridge, TN USA

[5] Natl Inst Polar Res, Tokyo, Japan

[6] Univ Leicester, Dept Phys & Astron, EOS Grp, Leicester LE1 7RH, Leics, England

[7] Karlsruhe Inst Technol, Leopoldshafen, Germany

[8] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA

[9] NOAA, Global Monitoring Div, Earth Syst Res Lab, Boulder, CO USA

[10] Indian Inst Trop Meteorol, Pune, Maharashtra, India

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 07期

关键词：

CO2 sources and sinks; surface fluxes; inverse modeling; GOSAT; column CO2 concentration; GREENHOUSE GASES; REGIONAL CO2; SPECTROSCOPIC OBSERVATIONS; ALGORITHM; SATELLITE; VALIDATION; ROBUST; SPACE;

D O I：

10.1002/2013GL059174

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We investigated differences in the five currently-available datasets of column-integrated CO2 concentrations (X-CO2) retrieved from spectral soundings collected by Greenhouse gases Observing SATellite (GOSAT) and assessed their impact on regional CO2 flux estimates. We did so by estimating the fluxes from each of the five X-CO2 datasets combined with surface-based CO2 data, using a single inversion system. The five X-CO2 datasets are available in raw and bias-corrected versions, and we found that the bias corrections diminish the range of the five coincident values by similar to 30% on average. The departures of the five individual inversion results (annual-mean regional fluxes based on X-CO2-surface combined data) from the surface-data-only results were close to one another in some terrestrial regions where spatial coverage by each X-CO2 dataset was similar. The mean of the five annual global land uptakes was 1.7 +/- 0.3 GtC yr(-1), and they were all smaller than the value estimated from the surface-based data alone.

引用

页码：2598 / 2605

页数：8

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