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DOI | 10.1088/1748-9326/aa625b |
Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies | |
Gao, Zhongming1; Liu, Heping1; Katul, Gabriel G.2,3; Foken, Thomas4 | |
2017-03-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | It is now accepted that large-scale turbulent eddies impact the widely reported non-closure of the surface energy balance when latent and sensible heat fluxes are measured using the eddy covariance method in the atmospheric surface layer (ASL). However, a mechanistic link between large eddies and non-closure of the surface energy balance remains a subject of inquiry. Here, measured 10 Hz time series of vertical velocity, air temperature, and water vapor density collected in the ASL are analyzed for conditions where entrainment and/or horizontal advection separately predominate. The series are decomposed into small-and large-eddies based on a frequency cutoff and their contributions to turbulent fluxes are analyzed. Phase difference between vertical velocity and water vapor density associated with large eddies reduces latent heat fluxes, especially in conditions where advection prevails. Enlarged phase difference of large eddies linked to entrainment or advection occurrence leads to increased residuals of the surface energy balance. |
英文关键词 | eddy covariance fluxes large eddies ensemble empirical mode decomposition horizontal advection |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397803200005 |
WOS关键词 | EMPIRICAL MODE DECOMPOSITION ; HILBERT-HUANG TRANSFORM ; EXPERIMENT EBEX-2000 ; IMBALANCE PROBLEM ; SONIC ANEMOMETER ; BOUNDARY-LAYER ; TIME-SERIES ; HEAT-FLUX ; LONG-TERM ; FOREST |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/33161 |
专题 | 气候变化 |
作者单位 | 1.Washington State Univ, Dept Civil & Environm Engn, Lab Atmospher Res, Pullman, WA 99164 USA; 2.Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA; 3.Duke Univ, Dept Civil & Environm Engn, Durham, NC 27708 USA; 4.Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res, Bayreuth, Bavaria, Germany |
推荐引用方式 GB/T 7714 | Gao, Zhongming,Liu, Heping,Katul, Gabriel G.,et al. Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(3). |
APA | Gao, Zhongming,Liu, Heping,Katul, Gabriel G.,&Foken, Thomas.(2017).Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies.ENVIRONMENTAL RESEARCH LETTERS,12(3). |
MLA | Gao, Zhongming,et al."Non-closure of the surface energy balance explained by phase difference between vertical velocity and scalars of large atmospheric eddies".ENVIRONMENTAL RESEARCH LETTERS 12.3(2017). |
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