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DOI | 10.1002/2018GL077021 |
Intrinsic Constraints on Asymmetric Turbulent Transport of Scalars Within the Constant Flux Layer of the Lower Atmosphere | |
Li, Dan1; Katul, Gabriel G.2,3; Liu, Heping4 | |
2018-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:4页码:2022-2030 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A widely used assumption in boundary layer meteorology is the z independence of turbulent scalar fluxes F-s throughout the atmospheric surface layer, where z is the distance from the boundary. This assumption is necessary for the usage of Monin-Obukhov Similarity Theory and for the interpretation of eddy covariance measurements of F-s when using them to represent emissions or uptake from the surface. It is demonstrated here that the constant flux assumption offers intrinsic constraints on the third-order turbulent transport of F-s in the unstable atmospheric surface layer. When enforcing z independence of F-s on multilevel F-s measurements collected above different surface cover types, it is shown that increasing instability leads to a novel and universal description of (i) the imbalance between ejecting and sweeping eddy contributions to F-s and (ii) the ratio formed by a dimensionless turbulent transport of F-s and a dimensionless turbulent transport of scalar variance. When combined with structural models for the turbulent transport of F-s, these two findings offer a new perspective on closing triple moments beyond conventional gradient diffusion schemes. A practical outcome is a diagnostic of the constant flux assumption from single-level F-s measurements. |
英文关键词 | constant flux layer asymmetric transport quadrant analysis turbulent flux transport |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427564300038 |
WOS关键词 | BOUNDARY-LAYER ; COUNTERGRADIENT TRANSPORT ; MOMENTUM-TRANSFER ; WATER-VAPOR ; CLOSURE ; MODEL ; HEAT ; MOTION ; FLOWS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26461 |
专题 | 气候变化 |
作者单位 | 1.Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA; 2.Duke Univ, Nicholas Sch Environm, Durham, NC USA; 3.Duke Univ, Dept Civil & Environm Engn, Durham, NC 27706 USA; 4.Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USA |
推荐引用方式 GB/T 7714 | Li, Dan,Katul, Gabriel G.,Liu, Heping. Intrinsic Constraints on Asymmetric Turbulent Transport of Scalars Within the Constant Flux Layer of the Lower Atmosphere[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(4):2022-2030. |
APA | Li, Dan,Katul, Gabriel G.,&Liu, Heping.(2018).Intrinsic Constraints on Asymmetric Turbulent Transport of Scalars Within the Constant Flux Layer of the Lower Atmosphere.GEOPHYSICAL RESEARCH LETTERS,45(4),2022-2030. |
MLA | Li, Dan,et al."Intrinsic Constraints on Asymmetric Turbulent Transport of Scalars Within the Constant Flux Layer of the Lower Atmosphere".GEOPHYSICAL RESEARCH LETTERS 45.4(2018):2022-2030. |
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