| A Meta-Analysis of Open-Path Eddy Covariance Observations of Apparent CO2 Flux in Cold Conditions in FLUXNETR | |
| Wang, Liming1,2,3,4; Lee, Xuhui2,3; Wang, Wei2,5; Wang, Xufeng6; Wei, Zhongwang2,3; Fu, Congsheng2,3; Gao, Yunqiu2,3; Lu, Ling6; Song, Weimin1,4; Su, Peixi6 | |
| 刊名 | JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
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| 2017-11-01 | |
| 卷号 | 34期号:11页码:2475-2487 |
| ISSN号 | 0739-0572 |
| DOI | 10.1175/JTECH-D-17-0085.1 |
| 通讯作者 | Lee, Xuhui(xuhui.lee@yale.edu) |
| 英文摘要 | Open-path eddy covariance systems are widely used for measuring the CO2 flux between land and atmosphere. A common problem is that they often yield negative fluxes or physiologically unreasonable CO2 uptake fluxes in the nongrowing season under cold conditions. In this study, a meta-analysis was performed on the eddy flux data from 64 FLUXNET sites and the relationship between the observed CO2 flux and the sensible heat flux was analyzed. In theory, these two fluxes should be independent of each other in cold conditions (air temperature lower than 0 degrees C) when photosynthesis is suppressed. However, the results show that a significant and negative linear relationship existed between these two fluxes at 37 of the sites. The mean linear slope value is -0.008 +/- 0.001 mu mol m(-2) s(-1) per W m(-2) among the 64 sites analyzed. The slope value was not significantly different among the three gas analyzer models (LI-7500, LI-7500A, IRGASON/EC150) used at these sites, indicating that self-heating may not be the only reason for the apparent wintertime net CO2 uptake. These results suggest a systematic bias toward larger carbon uptakes in the FLUXNET sites that deploy open-path eddy covariance systems. |
| 收录类别 | SCI |
| WOS关键词 | CARBON-DIOXIDE EXCHANGE ; OF-ATTACK ERRORS ; GAS ANALYZERS ; NET ECOSYSTEM ; FOREST ; DENSITY ; DESERT ; WATER ; ENVIRONMENT ; DROUGHT |
| WOS研究方向 | Engineering ; Meteorology & Atmospheric Sciences |
| WOS类目 | Engineering, Ocean ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000416580400008 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558039 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Lee, Xuhui |
| 作者单位 | 1.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Nanjing, Jiangsu, Peoples R China 3.Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA 4.Tsinghua Univ, Div Ocean Sci & Technol, Grad Sch Shenzhen, Shenzhen, Peoples R China 5.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing, Jiangsu, Peoples R China 6.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Cold & Arid Reg Remote Sensing Observat Syst Expt, Lanzhou, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liming,Lee, Xuhui,Wang, Wei,et al. A Meta-Analysis of Open-Path Eddy Covariance Observations of Apparent CO2 Flux in Cold Conditions in FLUXNETR[J]. JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY,2017,34(11):2475-2487. |
| APA | Wang, Liming.,Lee, Xuhui.,Wang, Wei.,Wang, Xufeng.,Wei, Zhongwang.,...&Lin, Guanghui.(2017).A Meta-Analysis of Open-Path Eddy Covariance Observations of Apparent CO2 Flux in Cold Conditions in FLUXNETR.JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY,34(11),2475-2487. |
| MLA | Wang, Liming,et al."A Meta-Analysis of Open-Path Eddy Covariance Observations of Apparent CO2 Flux in Cold Conditions in FLUXNETR".JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY 34.11(2017):2475-2487. |
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