违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 冬季黑潮延伸体海温异常结构及其与热带太平洋海温变化关系分析-Analysis on the SSTA Structure of Kuroshio Extension in Winter and its Relation to Tropical Pacific SST Variation
doi:  10.3878/j.issn.1006-9585.2017.17007
冬季黑潮延伸体海温异常结构及其与热带太平洋海温变化关系分析

Analysis on the SSTA Structure of Kuroshio Extension in Winter and its Relation to Tropical Pacific SST Variation
摘要点击 101  全文点击 12  投稿时间:2017-01-10  修订日期:2017-10-22
查看HTML全文   下载PDF   查看/发表评论  下载PDF阅读器
基金:  国家自然科学基金
中文关键词:  黑潮延伸体,El Ni?o,EOF,相关分析,海温异常
英文关键词:  kuroshio extension  El Ni?o  EOF  correlation analysis  SSTA
        
作者中文名作者英文名单位
杨明浩Yang Minghao国防科技大学气象海洋学院
王丽琼Wang Liqiong国防科技大学气象海洋学院
左瑞亭Zuo Ruiting国防科技大学气象海洋学院
引用:杨明浩,王丽琼,左瑞亭.2018.冬季黑潮延伸体海温异常结构及其与热带太平洋海温变化关系分析[J].气候与环境研究
Citation:Yang Minghao,Wang Liqiong,Zuo Ruiting.2018.Analysis on the SSTA Structure of Kuroshio Extension in Winter and its Relation to Tropical Pacific SST Variation[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      本文基于National Aeronautics and Space Administration(NASA)遥感系统提供的2003~2015年全球高分辨率海表温度资料,应用经验正交函数分析、时滞相关分析等方法,对北太平洋冬季黑潮延伸体区海温异常特征及其与热带海表温度的可能关系进行了初步分析。研究发现,冬季延伸体区的海温异常主要表现为两类结构特征,其一为局地发展型,包括海盆尺度一致性变化的季节模态和纬向反位相的收缩型结构,前者具有约3年和7年周期的年际变化,而后者约以2009年为界存在显著年代际突变;其二为纬向延展型,包括分叉东扩结构和通道东扩结构,且该两结构型在2010年前反位相,使得2006年前暖异常东扩路径基本控制在36°N以南,其后至2010年期间,暖异常东扩路径偏北,而2010年后结构型转为同位相,暖异常东扩路径偏北。分叉东扩结构表现为与热带海温变化紧密相关,进一步的时滞相关分析与合成分析表明,热带太平洋不同地区对中纬度海温分叉东扩的影响存在差异,Ni?o3区海温异常超前延伸体区分叉东扩模态约1~2个月,而Ni?o3.4区及Ni?o4区则与延伸体区海温分叉东扩保持前后各约3个月的宽谱同期负相关,或可表明El Ni?o的东部型和中部型对中纬度延伸体暖流分叉东扩存在超前和同期相关影响,且中部型影响更显著。
Abstract:
      Based on the high-resolution SST dataset from 2003 to 2015 provided by remote sensing system of NASA, the winter SSTA characters of north pacific kuroshio extension and the possible relationship with tropical SST are investigated in this study. The results show that the winter SSTA of kuroshio extension demonstrates two types of structural characteristics, the type of local development and the type of zonal extension. The former includes the seasonal integral variation mode in basin scale with the annual variation in about 3a and 7a period, and the contraction mode with zonal inverse phase which presents a remarkable decadal abrupt change in about 2009. While the later involves two zonal expansion modes respectively with the biforked structure and the channeling structure. Such two expansion modes give antiphase and inphase relation before and after 2010 and the composition of which, guide the extending structure of warmer anomaly to a stable eastward extending path by the south of 36°N before 2006, while shifts to the north path both during 2006 to 2010 and after 2010. The seasonal integral variation mode is relevant to the basin scale SST variation in north Pacific and indicates the impaction of decadal change such as PDO. While the biforked extending mode involves closely to tropical SST variation. The further study of time-lag correlation analysis and composite analysis indicates the diverse impactions on the biforked mode in different tropical Pacific region. Ni?o3 SST index has about 1-2 months leading correlation to the bifurcation mode of kuroshio extension SSTA, while Ni?o3.4 and Ni?o4 index keep a broad synchronized correlation to it with about 3-month lead and lagged respectively, which may illustrates the similar leading and synchronized correlation for the eastern type and central type of El Ni?o to the biforked mode and the even more remarkable impacts of the later.
主办单位:中国科学院大气物理研究所 单位地址:北京市9804信箱
联系电话: 010-82995048,010-82995049传真:010-82995048 邮编:100029 Email:qhhj@mail.iap.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09060247号