搜索结果: 1-15 共查到“海洋科学 ENSO”相关记录22条 . 查询时间(0.031 秒)
中亚是“一带一路”的重要节点，国民经济以农牧业为主。近10多年来中亚地区冬季频发持续性极端低温事件，给当地造成严重灾害。持续性极端低温事件的产生往往与中高纬大气季节内振荡有关，研究中亚地区冬季气温季节内变率及其形成机理具有重要意义。
近日，中国科学院海洋研究所胡敦欣院士研究组贾凡副研究员与中国海洋大学、澳大利亚、美国相关学者合作，在海洋与气候变化研究领域取得重要进展，研究成果“Enhanced North Pacific impact on El Nino/Southern Oscillation under greenhouse warming”《温室气体增暖背景下北太平洋对ENSO的影响加强》在国际学术期刊Nature C...
日前，中科院海洋所张荣华、高川、王宏娜与复旦大学陶灵江（原海洋所研究生）共同撰写的《中间型海洋-大气耦合模式及其ENSO模拟和预测》专著由科学出版社正式出版发行。厄尔尼诺-南方涛动（ENSO）是热带太平洋海洋-大气相互作用产生的最强的年际变率信号，通过大气遥相关等过程，会引发全球天气、气候异常，对环境和社会产生深远的影响。因此，对ENSO准确模拟和及时预测至关重要。尽管目前对ENSO的预测是继数值...
利用1979~2007年的海温和热通量以及风场资料分析了与ENSO相关的热带北大西洋海温变化的机制及其与印度-东亚夏季风环流的关系, 结果表明热带北大西洋夏季海温和前冬Niño3区海温具有显著正相关, 它与同期印度-东亚季风区大气环流的相关显示了类似于ENSO成熟次年夏季季风环流异常的分布特征. 热带北大西洋海温和ENSO的同号相关主要归因于大西洋大气对ENSO的遥响应所导致的潜热通量和...
海面变化记录中隐含着全球和区域变化的重要信息, 对这些信号的分离、提取并揭示其变化特征, 是深入理解海面变化机制的前提和基础. 基于西北太平洋边缘海区10个验潮站1965~2005年月均验潮序列, 利用二阶统计量盲源识别(SOBI)方法进行信号分离, 结合EMD方法提取海面变化记录中ENSO信号, 进而应用小波分析方法探讨了ENSO信号的时空分异特征. 结果表明: 各站位验潮序列记录了不同类型、不...
海洋垂直平均速度影响ENSO事件成熟位相锁定的物理过程
Kelvin波 正反馈过程
2009/3/19
利用混合模模式研究了垂直平均速度影响ENSO事件成熟位相锁定的物理过程. 结果表明, 垂直平均速度的季节变化对Kelvin波影响的正反馈过程是ENSO事件成熟位相锁定在年底的机制; Rossby波对冷事件峰值前6个月的异常海表温度由正值变为负值的记忆是La Niña事件成熟位相锁定在年底的另一机制. 这与前人的结果不同, 后者认为El Niño年在赤道中太平洋地区异常西...
热带太平洋海洋混合层水体振荡与ENSO循环
热带太平洋 温跃层和海面风应力异常 ENSO循环 混合层水体振荡
2009/2/26
研究了热带太平洋温跃层和海面风应力年际变率主要模态及它们之间的相互作用, 探讨了ENSO循环的可能形成机制, 得到如下结果: (1)热带太平洋温跃层异常具以160°W为纵轴的东西向偶极子分布和以6~8°N为横轴的南北向跷跷板分布等两种主要模态, 两者(相位差90°)组合构成El Niño/La Niña循环, 表现为混合层水体(指温跃层界面之上海温垂直分布较均匀的上层海...
Interannual Variability in the Heat Content of the Kuroshio Extension Associated with the 1982 ENSO Event
Interannual Variability Kuroshio Extension Heat Content
2009/1/10
Interannual variability in vertically averaged temperature over the upper 400 m of ocean (i.e., upper ocean heat content) in the vicinity of the Kuroshio Extension experienced significant changes duri...
Interannual Variability of the Kuroshio Frontal Structure along Its Western Boundary in the North Pacific Ocean Associated with the 1982 ENSO Event
Interannual Variability North Pacific Ocean Kuroshio Frontal Structure
2009/1/8
The vertically averaged temperature (Tav) over the upper 200 m of ocean in the western boundary of the North Pacific is used to detect changes in the strength and path of the Kuroshio Front along the ...
Hindcast/Forecast of ENSO Events Based upon the Redistribution of Observed and Model Heat Content in the Western Tropical Pacific, 1964–86
Western Tropical Pacific ENSO Events Model Heat Content
2009/1/7
The redistribution of observed upper-ocean heat content in the western tropical North Pacific for the four-year period 1979–82 was shown by Pazan et al. to provide a qualitative hindcast capability fo...
The Role of the Western Boundary in the ENSO Cycle：Experiments with Coupled Models
El Niñ o–Southern Oscillation Western Boundary Coupled Models
2008/12/30
Coupled models of the Pacific ocean–atmosphere system have been shown to produce oscillations in the model coupled system that resemble the observed El Niño–Southern Oscillation (ENSO) cycle in...
Ocean Wave Dynamics and the Time Scale of ENSO
El Nino/Southern Oscillation Ocean Wave Dynamics Time Scale of ENSO
2008/12/27
A reexamination of the coupled delayed-action oscillator model of Suarez and Schopf for the El Nino/Southern Oscillation (ENSO) phenomenon is made, by deriving it using a parameterized atmosphere and ...
Ocean Model Studies of Upper-Ocean Variability at 0°, 160°W during the 1982–1983 ENSO：Local and Remotely Forced Response
ocean circulation mean wind stresses SADLER pseudostress fields
2008/12/17
A hindcast of the 1982–1983 ENSO event using a primitive equation ocean circulation model forced by monthly mean wind stresses based on the SADLER pseudostress fields shows very good agreement with ob...
New Ocean Model for Studying the Tropical Oceanic Aspects of ENSO
El Niñ o–Southern Oscillation sea surface temperature Tropical Oceanic Aspects
2008/12/12
A 21/2-layer ocean model is developed to investigate the role of the first two baroclinic modes in determining the interannual variations of the sea surface temperature (SST) associated with the El Ni...