Review of wave‐turbulence interactions in the stable atmospheric boundary layer
Review of wave‐turbulence interactions in the stable atmospheric boundary layer
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DOI：
10.1002/2015rg000487
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发表时间：
2015-09
影响因子：
25.2
通讯作者：
Jielun Sun;C. Nappo;L. Mahrt;D. Belušić;B. Grisogono;David R. Stauffer;Manuel Pulido;Chantal Staquet;Qingfang Jiang;Annick Pouquet;Carlos Yagüe;B. Galperin;Ronald B. Smith;John J. Finnigan;Shane D. Mayor;G. Svensson;Andrey A. Grachev;William D. Neff
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文献类型：
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作者：
Jielun Sun;C. Nappo;L. Mahrt;D. Belušić;B. Grisogono;David R. Stauffer;Manuel Pulido;Chantal Staquet;Qingfang Jiang;Annick Pouquet;Carlos Yagüe;B. Galperin;Ronald B. Smith;John J. Finnigan;Shane D. Mayor;G. Svensson;Andrey A. Grachev;William D. Neff
稳定分层环境中的流动的特征在于各向异性和间歇性湍流以及不同幅度和周期的波浪运动。了解稳定分层流中的湍流不稳定性和波-湍流相互作用仍然是地球科学（包括行星大气和海洋）中的一个具有挑战性的问题。稳定大气边界层（SABL）通常发生在地面被长波辐射冷却时，例如在陆地表面的夜间，甚至在冰雪表面的白天，以及当暖空气在冷表面上平流时。SABL中的间歇性湍流增强影响人类活动和天气变化，但它不能在最先进的数值预报模型中产生。这种失败主要是由于缺乏对稳定分层流中看似随机的湍流产生的物理机制的理解，其中波-湍流相互作用是湍流不稳定性的潜在机制。SABL中的波浪-湍流相互作用研讨会讨论了当前对波浪-湍流相互作用的理解和挑战，以及从理论，观测和数值参数化的角度出发，波浪运动在各向异性和间歇性湍流中的作用。关于稳定分层流中的波动和湍流已经有一些综述，但关于波动-湍流相互作用的综述不多。本文重点讨论夜间SABL;然而，这里对稳定分层流中间歇性湍流和波-湍流相互作用的讨论强调了稳定分层地球物理动力学中的重要问题。
Flow in a stably stratified environment is characterized by anisotropic and intermittent turbulence and wavelike motions of varying amplitudes and periods. Understanding turbulence intermittency and wave‐turbulence interactions in a stably stratified flow remains a challenging issue in geosciences including planetary atmospheres and oceans. The stable atmospheric boundary layer (SABL) commonly occurs when the ground surface is cooled by longwave radiation emission such as at night over land surfaces, or even daytime over snow and ice surfaces, and when warm air is advected over cold surfaces. Intermittent turbulence intensification in the SABL impacts human activities and weather variability, yet it cannot be generated in state‐of‐the‐art numerical forecast models. This failure is mainly due to a lack of understanding of the physical mechanisms for seemingly random turbulence generation in a stably stratified flow, in which wave‐turbulence interaction is a potential mechanism for turbulence intermittency. A workshop on wave‐turbulence interactions in the SABL addressed the current understanding and challenges of wave‐turbulence interactions and the role of wavelike motions in contributing to anisotropic and intermittent turbulence from the perspectives of theory, observations, and numerical parameterization. There have been a number of reviews on waves, and a few on turbulence in stably stratified flows, but not much on wave‐turbulence interactions. This review focuses on the nocturnal SABL; however, the discussions here on intermittent turbulence and wave‐turbulence interactions in stably stratified flows underscore important issues in stably stratified geophysical dynamics in general.