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| 作者 | Yu Guirui
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| 发表日期 | 2005
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| 关键词 | Atmospheric structure
Carbon dioxide
Climate change
Plants (botany)
Vegetation
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| 英文摘要 | Based on analysis of mechanisms causing energy no-closure and nocturnal low fluxes issues for CO2 exchange studies by eddy covariance method, corrections were done with the raw data sets obtained from Changbai Mountains forest flux site, to evaluate the impacts of sonic anemometer tilt, frequency response limitations and advection on estimation of CO2 exchange, respectively. The results show that the planar fit coordinate transforming method is superior to the streamline coordinate transforming method in tilt correction. The latter could cause a systematical underestimation of eddy fluxes relating with the angle of sensor and terrain tilt. The underestimation of CO2 and energy fluxes for frequency response limitations average 3.0% and 2.0% during daytime, respectively, which increase by 9.0% and 5.5% during nighttime, respectively. The corrections of frequency response limitations are closely related to atmospheric stability. The advection loss of CO2 fluxes is dominated by nocturnal vertical advection, which is at least 18% when the horizontal advection is neglected. It is suggested that more work be done to understand the characteristics of horizontal advection and turbulent eddies under a complex circumstance. Copyright by Science in China Press 2005. |
| 出处 | Science in China, Series D: Earth Sciences
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| 卷 | 48期:SUPPL.1页:106-115 |
| 收录类别 | EI
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| 语种 | 英语
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| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/24510]  |
| 专题 | 地理科学与资源研究所_历年回溯文献
地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
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推荐引用方式
GB/T 7714 |
Yu Guirui. Eddy flux corrections for CO2 exchange in broad-leaved Korean pine mixed forest of Changbai Mountains. 2005.
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