DOI: 10.1002/2013GL059174
论文题名: Influence of differences in current GOSAT X CO2 retrievals on surface flux estimation
作者: Takagi H. ; Houweling S. ; Andres R.J. ; Belikov D. ; Bril A. ; Boesch H. ; Butz A. ; Guerlet S. ; Hasekamp O. ; Maksyutov S. ; Morino I. ; Oda T. ; O'Dell C.W. ; Oshchepkov S. ; Parker R. ; Saito M. ; Uchino O. ; Yokota T. ; Yoshida Y. ; Valsala V.
刊名: Geophysical Research Letters
ISSN: 0094-10183
EISSN: 1944-9914
出版年: 2014
卷: 41, 期: 7 起始页码: 2598
结束页码: 2605
语种: 英语
英文关键词: GOSAT
; inverse modeling
; surface fluxes
Scopus关键词: Estimation
; Inverse problems
; Surface measurement
; Weather satellites
; Bias correction
; Flux estimation
; GOSAT
; Greenhouse gases observing satellites
; Inverse modeling
; Inversion results
; Spatial coverage
; Surface flux
; Carbon dioxide
; carbon dioxide
; concentration (composition)
; data set
; GOSAT
; satellite data
; source-sink dynamics
; surface flux
英文摘要: We investigated differences in the five currently-available datasets of column-integrated CO2 concentrations (XCO2) 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 XCO2 datasets combined with surface-based CO2 data, using a single inversion system the five XCO2 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 ∼30% on average the departures of the five individual inversion results (annual-mean regional fluxes based on XCO2-surface combined data) from the surface-data-only results were close to one another in some terrestrial regions where spatial coverage by each XCO2 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. Key Points Differences in five recent satellite-based CO2 datasets were investigated Influence of CO2 data differences on surface CO2 flux estimation was assessed Impact on flux estimates varies with number density of available data © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897175247&doi=10.1002%2f2013GL059174&partnerID=40&md5=a6527482f62b26c2ee371532f0d45c83
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7447
Appears in Collections: 气候减缓与适应
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作者单位: National Institute for Environmental Studies, Tsukuba, Japan
Recommended Citation:
Takagi H.,Houweling S.,Andres R.J.,et al. Influence of differences in current GOSAT X CO2 retrievals on surface flux estimation[J]. Geophysical Research Letters,2014-01-01,41(7).