摘要
近年来东北太平洋海洋热浪频发,为研究维多利亚模态(VM)对海洋热浪的影响,利用HadISST及OISST海温资料,采用相关分析等方法对东北太平洋海洋热浪与VM之间的联系进行分析和讨论。结果表明,VM与北太平洋东部尤其是东北太平洋的海洋热浪相关非常显著。东北太平洋海洋热浪的不同指数都与VM指数(VMI)关系密切,位相变动及强度变化都较一致,其中发生频次与VMI的相关系数可达0.70。东北太平洋强海洋热浪时期,都伴随强的正VM事件,而且部分时期北太平洋海盆海温呈现类似于VM的空间模态。VM与东北太平洋海洋热浪的密切关系将有助于对东北太平洋海洋热浪进行更深入的研究。
Marine heatwaves have been observed frequently in the Northeast(NE)Pacific in recent years.In order to study the influence of Victorian Mode(VM)on the marine heatwaves,the relationship between the NE Pacific Marine Heatwave and the VM was analyzed and discussed by using correlation analysis and other methods based on HadISST and OISST data sets.The results show that VM is significantly associated with marine heatwaves in the eastern North Pacific,especially in the NE Pacific.The different properties of the NE Pacific marine heatwaves are closely related to the VM index(VMI),and the changes in phase and intensity are consistent,among which the correlation coefficient between occurrence frequency and VMI can reach to 0.70.The periods of prolonged marine heatwaves in the NE Pacific are accompanied by strong positive VM events,and for some periods,the North Pacific basin SSTs can exhibit spatial patterns similar to VM.The close relationship between VM and the NE Pacific marine heatwaves will contribute to further study on the NE Pacific marine heatwaves.
作者
林榕茂
李扬
丁瑞强
LIN Rongmao;LI Yang;DING Ruiqiang(Plateau Atmosphere and Environment Key Laboratory of Sichuan Province,College of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu 610225,China;State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China)
出处
《成都信息工程大学学报》
2023年第2期200-207,共8页
Journal of Chengdu University of Information Technology
基金
国家自然科学基金资助项目(41975070)。
关键词
气象学
气象与气候
海洋热浪
维多利亚模态
东北太平洋
meteorology
meteorology and climate
marine heatwave
Victoria Mode
Northeast Pacific
