Correcting method of eddy covariance fluxes over non-flat surfaces and its application in ChinaFLUX
文献类型：EI期刊论文
| 作者 | Zhu Zhilin; Sun Xiaomin; Yuan Guofu |
| 发表日期 | 2005 |
| 关键词 | Coordinate measuring machines Ecosystems Surface phenomena Vegetation |
| 英文摘要 | Although Eddy Covariance (EC) technique is one of the best methods for estimating the energy and mass exchanges between underlying surface and atmosphere in micrometeorology, errors and uncertainties still exist without necessary corrections. In this paper, we will focus on the effect of coordinate system on the eddy fluxes. Based on the data observed over four sites (one farmland site, one grassland site and two forest sites), the effects of three coordinate system transforming methods (Double Rotation-DR, Triple Rotation-TR and Planar Fit-PF) on the turbulent fluxes are analyzed. It shows that (i) the corrected fluxes are more or less than the uncorrected fluxes, which is related mainly to the sloping degree of surface, wind speed and wind direction; and (ii) pitch angle has a sinusoidal dependence on wind direction, especially in the regular sloping terrain; and (iii) PF method is something like the simplification of TR or DR, and there are not obvious distinctions in correction in sloping grassland and flat farmland, but PF method is not suitable for uneven and irreaular forest sites. Copyright by Science in China Press 2005. |
| 出处 | Science in China, Series D: Earth Sciences
 |
| 卷 | 48期:SUPPL.1页:42-50 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/24329]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhu Zhilin,Sun Xiaomin,Yuan Guofu. Correcting method of eddy covariance fluxes over non-flat surfaces and its application in ChinaFLUX. 2005. |
入库方式： OAI收割
来源：地理科学与资源研究所
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