Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD026164 |
Sensitivity of CO2 surface flux constraints to observational coverage | |
Byrne, B.1; Jones, D. B. A.1,2; Strong, K.1; Zeng, Z. -C.3,4,5; Deng, F.1; Liu, J.6 | |
2017-06-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA; Peoples R China |
英文摘要 | Inverse modeling of regional CO2 fluxes using atmospheric CO2 data is sensitive to the observational coverage of the observing network. Here we use the GEOS-Chem adjoint model to examine the sensitivity to CO2 fluxes of observations from the in situ surface network, the Total Carbon Column Observing Network (TCCON), the Greenhouse Gases Observing Satellite (GOSAT), and the Orbiting Carbon Observatory (OCO-2). We find that OCO-2 has high sensitivity to fluxes throughout the tropics and Southern Hemisphere, while surface observations have high sensitivity to fluxes in the northern extratropics throughout the year. For GOSAT viewing modes, ocean glint data provide the strongest constraints on fluxes in the tropics and Southern Hemisphere during Northern Hemisphere fall and winter relative to other viewing modes. In contrast, GOSAT nadir land data offer the greater sensitivity to fluxes in these regions during Northern Hemisphere spring and summer. For OCO-2 viewing modes, ocean glint data provided the dominant sensitivity to the surface fluxes in the northern subtropics, tropics, and Southern Hemisphere. We performed a series of inversion analyses using pseudodata and found that the varying sensitivities can result in large differences in regional flux estimates. However, combining measurements from different observing systems to exploit their complementarity may lead to a posteriori flux estimates with improved accuracy. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405514000030 |
WOS关键词 | RETRIEVAL ALGORITHM ; ATMOSPHERIC CO2 ; GOSAT ; SINKS ; XCO2 ; VALIDATION ; INVERSION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32417 |
专题 | 气候变化 |
作者单位 | 1.Univ Toronto, Dept Phys, Toronto, ON, Canada; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA; 3.Chinese Univ Hong Kong, Inst Space & Earth Informat Sci, Hong Kong, Hong Kong, Peoples R China; 4.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China; 5.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 6.CALTECH, Jet Prop Lab, Pasadena, CA USA |
推荐引用方式 GB/T 7714 | Byrne, B.,Jones, D. B. A.,Strong, K.,et al. Sensitivity of CO2 surface flux constraints to observational coverage[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(12). |
APA | Byrne, B.,Jones, D. B. A.,Strong, K.,Zeng, Z. -C.,Deng, F.,&Liu, J..(2017).Sensitivity of CO2 surface flux constraints to observational coverage.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(12). |
MLA | Byrne, B.,et al."Sensitivity of CO2 surface flux constraints to observational coverage".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.12(2017). |
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