通量方差法估算海气界面动量通量的分析  

Analysis of the Air-Sea Momentum Flux Estimated by Flux-Variance Method

作　　者：薛宇欢 陈胜 刘展池 马洪余 陈思宇 XUE Yuhuan;CHEN Sheng;LIU Zhanchi;MA Hongyu;CHEN Siyu(First Institute of Oceanography,MNR,Qingdao 266061,China;Laboratory for Regional Oceanography and Numerical Modeling,Laoshan Laboratory,Qingdao 266237,China;Key Laboratory of Marine Science and Numerical Modeling,MNR,Qingdao 266061,China;Shandong Key Laboratory of Marine Science and Numerical Modeling,Qingdao 266061,China)

机构地区：[1]自然资源部第一海洋研究所,山东青岛266061 [2]崂山实验室区域海洋动力学与数值模拟功能实验室,山东青岛266237 [3]自然资源部海洋环境科学与数值模拟重点实验,山东青岛266061 [4]山东省海洋环境科学与数值模拟重点实验,山东青岛266061

出　　处：《海洋科学进展》2023年第3期412-419,共8页Advances in Marine Science

基　　金：国家自然科学基金面上项目(42276024);中央级公益性科研院所基本科研业务费专项资金资助项目(2022Q01);崂山实验室山东省专项经费资助项目(2022QNLM010102)。

摘　　要：利用南海北部博贺海洋气象观测平台涡动相关系统的长期湍流观测资料,分析并讨论了不同大气稳定度条件下的湍流通量方差相似性关系,提出了适用于小于18 m/s风速的归一化标准差与稳定度的参数化关系公式。应用通量方差法估算了海气界面的动量通量与摩擦速度,并与涡动相关系统的观测结果进行对比分析,对参数化公式进行了检验。结果表明:不同大气层结条件下的速度归一化标准差与大气稳定度满足1/3相似性关系,基于相似性函数的通量方差法估算结果与涡动相关系统测量结果较为一致,不稳定大气层结条件下的相关性高于稳定层结条件。应用通量方差法估算近海海气界面动量通量是可行的。Turbulence flux variance similarity relation was studied and parameterization based on between the wind speed(<18 m/s)normalized standard deviation and stability was proposed under different atmospheric stability conditions based on the longterm observation of eddy covariance system at the Bohe marine meteorological observation platform in the northern South China Sea.Air sea momentum flux was estimated with flux-variance method and compared with the observations of eddy covariance system observations for verification of the parameterization.The results show that the normalized standard deviation of velocity under different atmospheric stratification conditions satisfy the 1/3 similarity relationship.The estimation by flux-variance method is consistent with the eddy covariance measurements,and their correlation is higher under unstable atmospheric stratification condition than that under stable stratification condition.It is practical and reliable to estimate the momentum flux of air-sea interface in the coastal waters with the flux-variance method.

关 键 词：通量方差法 涡动相关法 海气界面 动量通量 摩擦速度 

分 类 号：P731[天文地球—海洋科学]