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地球科学进展  2014, Vol. 29 Issue (7): 844-853    DOI: 10.11867/j.issn.1001-8166.2014.07.0844
全球变化研究     
全球海表温度在不同时间尺度的主模态对比分析
刘鹏1, 江志红1, 于华英2, 秦怡1
1. 南京信息工程大学 气象灾害教育部重点实验室,江苏 南京210044; 2. 南京信息工程大学 遥感学院,江苏 南京210044
A Comparative Analysis of Main Modes of Global-scale Sea Surface Temperature on Multiple Time Scale
Peng Liu1, Zhihong Jiang1, Huaying Yu2, Yi Qin1
1.Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Jiangsu, Nanjing, 210044; 2.Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Jiangsu, Nanjing, 210044
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摘要:

利用1880—2009年HadISST资料,去掉百年全球变暖的信号,研究发现东太平洋、北太平洋和北大西洋都有较强的年际和年代际振荡信号,特别是赤道东太平洋南侧的年代际振荡是不容忽视的。对全球范围的海表温度资料做EOF分析发现,存在3种主要的全球尺度信号,第一模态为太平洋型、第二模态为北大西洋型以及第三模态为赤道中太平洋型。特别指出,第三模态是CP ENSO在全球模态中的表现。这3种模态在年际和年代际尺度都有显著的信号,在无滤波的情况下,3种模态方差贡献之和为34%。在年代际以上时间尺度范围,3种模态方差贡献之和为61%。在各种时间尺度中,这3种信号与全球平均温度都有一定的联系,尤其第一、二模态的影响最为重要,在年代际尺度中,第一、二模态方差贡献之和达到50%。2005年以后全球并没有明显增温,可能与前2个模态同时下降有关。

关键词: 海表温度主模态时间尺度全球尺度    
Abstract:

Using the HadISST data from 1880 to 2009, removed the signal of global warming in one hundred year. The results show that, there were the significant interannual and interdecadal oscillation signal at the eastern Pacific and north Pacific and north Atlantic, especially the decadal oscillation in the south of eastern equatorial Pacific cannot be ignored. We found there are three major global-scale signals by using the Empirical Orthogonal Function (EOF) analysis on global sea surface temperature, the first mode is (ENSO-like/PDO-like) Pacific pattern, the second mode is (AMO-like) the north Atlantic pattern and the third mode is (ENSO Modoki-like/CP ENSO-like) Center Pacific Ocean pattern. In particular, the third mode is the performance of Center Pacific El Niño-Southern Oscillation in the global mode. There are significant signals in interannual and interdecadal scales, in the unfiltered conditions, the three modes can explain 34% of total variance contribution. Above the interdecadal scale, the sum of three modes variance contribution is 61%. In various time scales, the three signals and the average global temperature has a connection, especially the influence of the first and second mode is the most important, in the decadal scale, the sum of the first and second modal variance contribution is 50%. Since 2005, there is no significant signal of global warming may be associated with the simultaneous decline of the first two modes.

Key words: Global-scale    Sea Surface Temperature    Main mode    Time scale
出版日期: 2014-07-10
:  P731.11  
基金资助:

国家重点基础研究发展计划项目“东亚季风区年际—年代际气候变率机理与预测研究”(编号:2012CB955204); 江苏省博士后科研资助计划项目“不同温盐环流强度背景下北太平洋海表温度年代际振荡的变率研究”(编号:1301137C)资助

作者简介: 刘鹏(1980-),男,河北石家庄人,讲师,主要从事气候变化研究.E-mail:liupeng1998@nuist.edu.cn
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引用本文:

刘鹏, 江志红, 于华英, 秦怡. 全球海表温度在不同时间尺度的主模态对比分析[J]. 地球科学进展, 2014, 29(7): 844-853.

Peng Liu, Zhihong Jiang, Huaying Yu, Yi Qin. A Comparative Analysis of Main Modes of Global-scale Sea Surface Temperature on Multiple Time Scale. Advances in Earth Science, 2014, 29(7): 844-853.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2014.07.0844        http://www.adearth.ac.cn/CN/Y2014/V29/I7/844

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