| The impact of averaging period on eddy fluxes observed at ChinaFLUX sites | |
| Sun X. M. ; Zhu Z. L. ; Wen X. F. ; Yuan G. F. ; Yu G. R. | |
| 2006 | |
| 关键词 | terrestrial carbon cycle eddy covariance averaging period low-frequency contribution surface-air exchange carbon-dioxide long-term micrometeorological observations tall vegetation water-vapor methodology turbulence fluxnet forests |
| 英文摘要 | In this paper, the 'ensemble block' time average procedure and the Ogive function are applied to three ChinaFLUX sites to determine the low-frequency contribution to eddy fluxes. It is found that both methods give similar results. They show that 30 min flux-averaging periods are sufficient to capture all flux scales over a wheat field, but 60 min or longer is necessary over forests. Our results show that the optimal averaging period is a site-specific parameter. According to this analysis, for some ChinaFLUX sites at least, an averaging period that captures the low-frequency transport may improve the energy balance problem. (c) 2006 Elsevier B.V. All rights reserved. |
| 出处 | Agricultural and Forest Meteorology |
| 卷 | 137 |
| 期 | 3-4 |
| 页 | 188-193 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0168-1923 |
| 内容类型 | SCI/SSCI论文 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23031]  |
| 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 | Sun X. M.,Zhu Z. L.,Wen X. F.,et al. The impact of averaging period on eddy fluxes observed at ChinaFLUX sites. 2006. |
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