摘要
本文采用国际上广泛应用的3种再分析风场驱动WAVEWATCH III模型得到了南海波浪后报数据,并基于全球卫星高度计波高数据和我国沿海浮标实测数据对不同的风场计算结果进行了对比分析,分析表明3种风场的误差特征相差明显,其中ERA-40风场偏小,CFSR风场非常适合模拟常见天气的波浪过程,NCDC风场适合模拟大浪过程。论文重点以NCDC风场后报波浪数据分析了波浪模型模拟误差特点,发现在台风频发的的南海北部海域,再分析风场易低估大值波高,而在季风影响明显的南海南部海域,再分析风场易高估波高。浮标周边2°范围海域内的卫星高度计波高模拟误差趋势与浮标波高模拟误差趋势相似,浮标波高数据的统计特征值与“2度法”提取的卫星高度计数据统计特征值具有较高一致性。
In this paper,WAVEWATCH III wave model,which is individually forced by ERA-40,CFSR and NCDC reanalysis wind products,is used to obtain wave data in the South China Sea.Based on the global satellite altimeter wave height data and Chinese coastal buoy wave data,the three sets of modeling wave results induced by different wind products are compared and analyzed.It is revealed that the error characteristics of the three reanalysis wind products are obviously different.The ERA-40 wind data underestimate wave height and the CFSR wind field is very suitable for simulating the wave climate in the common weather.The NCDC wind data is more capable to capture large wave height series.Generally,according to the validation based on buoy data and altimeter wave data,both CFSR and NCDC reanalysis wind products can make good simulation of the main wave series in the South China Sea.Referring to the hindcasting wave data by NCDC wind,the error of WAVEWATCH III are investigated.It is found that in the north of the South China Sea where typhoons occur frequently,wave model tend to underestimate large wave heights.While in the south of the South China Sea,where the monsoon has a significant impact,wave model is prone to overestimate waves.Although the wave height errors vary from the north to the south,the WW3 wave model underestimate wave period in the whole South China Sea.According to the error characteristics,different reanalysis wind products should be used to conduct different research.For example,NCDC reanalysis wind is more suitable for definition of engineering wave standards and CFSR reanalysis wind is more capable to investigate long-term wave climate.The tendency of errors provides helpful clues for smart use of the hindcasting wave data.It is proved that all of the reanalysis wind products utilized in this paper is prone to underestimate extreme waves,especially those waves induced by intense typhoons,which is mainly due to the 6-hour interval of the wind field.It should be very cautious to use high quantiles of the hin
作者
王绿卿
梁丙臣
夏运强
邵珠晓
高慧君
WANG Lv-Qing;LIANG Bing-Chen;XIA Yun-Qiang;SHAO Zhu-Xiao;GAO Hui-Jun(College of Engineering, Ocean University of China, Qingdao 266100, China;Shandong Province Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100, China;NAVY Institute of Engineering Design & Research, Beijing 100070, China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第11期96-104,共9页
Periodical of Ocean University of China
基金
国家自然科学基金项目(51739010,51679223)
山东省自然科学基金项目(JQ201506)资助。
