Dependence of sea surface drag coefficient on wind-wave parameters  

作　　者：SHI Jian ZHONG Zhong LI Ruijie LI Yan SHA Wenyu 

机构地区：[1]Institute of Meteorology, PLA University of Science and Technology, Nanjing, 211101, China [2]Key Laboratory of Coastal Disaster and Defence, Ministry of Education, Hohai University,Nanjing, 210098, China

出　　处：《Acta Oceanologica Sinica》2011年第2期14-24,共11页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under Grant Nos 40675056 41076074;National Key Basic Research Development Program under Grant No.2007CB411805;the Basic Theory Foundation of Institute of Meteorology, PLA University of Science and Technology

摘　　要：The relationships between sea surface roughness z 0 and wind-wave parameters are analyzed,and spurious self-correlations are found in all of the parameterization schemes.Sea surface drag coefficient C D is fitted by four wind-wave parameters that are wave age,wave steepness,windsea Reynolds number R B and R H ,and the analyzed data are divided into laboratory,field and combined data sets respectively.Comparison and analysis of dependence of C D on wind-wave parameters show that R B can fit the C D most appropriately.Wave age and wave steepness are not suitable to fit C D with a narrow range data set.When the value of wave age has a board range,R H is not suitable to fit C D either.Three relationships between C D and R B are integrated into the bulk algorithm COARE to calculate the observational friction velocity,and the results show that the relationship between C D and R B which is fitted with field data set can describe the momentum transfer in the open ocean,under low-moderate wind speed condition,most appropriately.The relationships between sea surface roughness z 0 and wind-wave parameters are analyzed,and spurious self-correlations are found in all of the parameterization schemes.Sea surface drag coefficient C D is fitted by four wind-wave parameters that are wave age,wave steepness,windsea Reynolds number R B and R H ,and the analyzed data are divided into laboratory,field and combined data sets respectively.Comparison and analysis of dependence of C D on wind-wave parameters show that R B can fit the C D most appropriately.Wave age and wave steepness are not suitable to fit C D with a narrow range data set.When the value of wave age has a board range,R H is not suitable to fit C D either.Three relationships between C D and R B are integrated into the bulk algorithm COARE to calculate the observational friction velocity,and the results show that the relationship between C D and R B which is fitted with field data set can describe the momentum transfer in the open ocean,under low-moderate wind speed condition,most appropriately.

关 键 词：sea surface drag coefficient wind-wave parameter Windsea Reynolds number 

分 类 号：P731.22[天文地球—海洋科学] P731.23