The Coherent Structure of Water Vapour Transfer in the Unstable Atmospheric Surface Layer |
| |
| Authors: | Hongyan Chen Jiayi Chen Fei Hu Qingcun Zeng |
| |
| Institution: | (1) Department of Geophysics, Peking University, Beijing, 100871, P.R. China;(2) Institute of Atmospheric Physics, Academy of China, Beijing, 100029, P.R. China |
| |
| Abstract: | Observations of water vapour fluctuations over arice field show vapour ramps. Coherent structuresare first revealed by the frequently occurring ramp pattern in the vapourtrace. Wavelet and pseudo-wavelet analysis techniques were used inconditional sampling, and more than 100 hr of data have been analyzedto determine coherent structure characteristics. The most probablecoherent structure duration was in the range 2–12 sec andthe duration range of the most effective coherent structures shows somedifference between heat and water vapour transfers. Coherent structurescontribute to the major part of the total flux. |
| |
| Keywords: | Atmospheric surface layer Coherent structures Ramp pattern Turbulence Water vapour Wavelet analysis |
| 本文献已被 SpringerLink 等数据库收录！ |
