融合海表温度产品在渤黄东海的对比分析及初步验证  

Intercomparison analysis of merged Sea Surface Temperature products for the Bohai,Yellow and East China Seas

作　　者：吴磊 王彬[1,2] 潘锡山 韩雪 WU Lei;WANG Bin;PAN Xishan;HAN Xue(Key Laboratory of Marine Hazards Forecasting,Ministry of Natural Resources,Hohai University,Nanjing 210098,China;College of Oceanology,Hohai University,Nanjing 210098,China;Tidal Flat Research Center of Jiangsu Province,Nanjing 210036,China)

机构地区：[1]河海大学自然资源部海洋灾害预报技术重点实验室,江苏南京210098 [2]河海大学海洋学院,江苏南京210098 [3]江苏省海涂研究中心,江苏南京210036

出　　处：《海洋通报》2020年第6期657-668,共12页Marine Science Bulletin

基　　金：国家重点研发计划(2018YFD0900906);国家自然科学基金“青年科学基金”(41706023);江苏省自然科学基金“青年基金项目”(BK20170871);江苏省自然科学基金“青年基金项目”(BK20180803);江苏省海洋科技创新专项项目(HY2019-1);国家科技支撑计划项目(2013BAB04B03)。

摘　　要：本文分析了两套融合海表温度产品(MGDSST和OISST)在1982—2019年间的时空特征,并结合现场观测数据,分别对其在渤黄东海的适用性进行初步评估。结果表明:(1)MGDSST和OISST两套融合产品在渤黄东海浅水海域差异显著,且差异随水深的减小迅速增大,在水深大于100 m的海域两者差异较小。(2)MGDSST夏季多年平均值高于OISST约0.3℃,而冬季多年平均值则低于OISST约0.23℃。(3)夏季MGDSST增温幅度显著强于OISST,冬季则相反。(4)EOF分析结果显示MGDSST在夏季的韩国沿岸流域和冬季的南黄海东部海域的空间变率显著强于OISST,两者的时间系数则具有较好的对应关系。(5)通过与KODC现场观测数据的对比,发现MGDSST在渤黄东海海域表现要优于OISST。本研究为融合海表温度产品在中国近海的适应性研究提供了理论依据。Temporal and spatial characteristics of two merged SST products(MGDSST and OISST)during the period from 1982 to 2019 were investigated,respectively.The preliminarily assessments of MGDSST and OISST in the Bohai,Yellow and East China Seas were evaluated with in-situ measurements.The results suggest that MGDSST and OISST present significant differences in the coastal region(water depth shallower than 100 m)of the study area,and the difference increases rapidly with the decrease of water depth.The averaged long-term value of MGDSST in summer is approximate 0.3℃higher than that of OISST,while it is 0.23℃colder in winter.Furthermore,in summer the warming trend of MGDSST during the study period is significantly stronger than that of OISST,which is opposite in winter.EOF analysis results show that the spatial variability of MGDSST is significantly stronger than that of OISST along the Korean Peninsula during summer and in the eastern part of the south Yellow Sea during winter.Moreover,it is found that MGDSST is closer to the in-situ measured data.This study provides a preliminarily theoretical basis for choosing merged SST products for ocean forecasting in offshore China.

关 键 词：海表温度 融合SST 遥感数据 时空特征 渤黄东海 

分 类 号：P731.11[天文地球—海洋科学]