Toward accurate CO2 and CH4 observations from GOSAT

被引：315

作者：

Butz, A. ^{[1
,2
]}

Guerlet, S. ^{[2
]}

Hasekamp, O. ^{[2
]}

Schepers, D. ^{[2
]}

Galli, A. ^{[2
]}

Aben, I. ^{[2
]}

Frankenberg, C. ^{[4
]}

Hartmann, J. -M. ^{[5
]}

Tran, H. ^{[5
]}

Kuze, A. ^{[7
]}

Keppel-Aleks, G. ^{[6
]}

Toon, G. ^{[4
]}

Wunch, D. ^{[6
]}

Wennberg, P. ^{[6
]}

Deutscher, N. ^{[3
,8
]}

Griffith, D. ^{[3
]}

Macatangay, R. ^{[3
]}

Messerschmidt, J. ^{[8
]}

Notholt, J. ^{[8
]}

Warneke, T. ^{[8
]}

机构：

[1] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-76344 Leopoldshafen, Germany

[2] SRON Netherlands Inst Space Res, Utrecht, Netherlands

[3] Univ Wollongong, Ctr Atmospher Chem, Wollongong, NSW 2522, Australia

[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[5] Univ Paris Diderot, Inst Pierre Simon Laplace, Univ Paris Est Creteil, Lab Interuniv Syst Atmospher,UMR 7583,CNRS, F-94010 Creteil, France

[6] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA

[7] Japan Aerosp Explorat Agcy, Satellite Applicat & Promot Ctr, Tsukuba, Ibaraki 3058505, Japan

[8] Univ Bremen, Inst Environm Phys, D-28359 Bremen, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

关键词：

METHANE EMISSIONS; CARBON-DIOXIDE; CALIBRATION;

D O I：

10.1029/2011GL047888

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The column-average dry air mole fractions of atmospheric carbon dioxide and methane (X-CO2 and X-CH4) are inferred from observations of backscattered sunlight conducted by the Greenhouse gases Observing SATellite (GOSAT). Comparing the first year of GOSAT retrievals over land with colocated ground-based observations of the Total Carbon Column Observing Network (TCCON), we find an average difference (bias) of -0.05% and -0.30% for X-CO2 and X-CH4 with a station-to-station variability (standard deviation of the bias) of 0.37% and 0.26% among the 6 considered TCCON sites. The root-mean square deviation of the bias-corrected satellite retrievals from colocated TCCON observations amounts to 2.8 ppm for X-CO2 and 0.015 ppm for X-CH4. Without any data averaging, the GOSAT records reproduce general source/sink patterns such as the seasonal cycle of X-CO2 suggesting the use of the satellite retrievals for constraining surface fluxes. Citation: Butz, A., et al. (2011), Toward accurate CO2 and CH4 observations from GOSAT, Geophys. Res. Lett., 38, L14812, doi:10.1029/2011GL047888.

引用

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