Limited nonlinearity of joint ENSO-QBO effects from the stratosphere to the troposphereOA
Limited nonlinearity of joint ENSO-QBO effects from the stratosphere to the troposphere
已有研究表明:厄尔尼诺-南方涛动(ENSO)与热带平流层准两年振荡(QBO)对北半球冬季平流层环流的协同影响主要表现为ENSO信号和QBO信号的线性叠加.本文进一步探讨ENSO-QBO联合强迫对大气环流总异常的非线性分量和线性分量相对贡献.结果表明,ENSO-QBO对平流层的协同影响几乎是ENSO信号和QBO信号的线性叠加,即表现出强线性叠加关系.从平流层到对流层,线性解释分量有所减弱.ENSO-QBO对对流层协同影响的线性与非线性分量表现出 一定的空间非均匀性:线性分量在低纬至中纬地区依然较强.在高纬地区非线性分量很快主导了总环流异常;此外,对流层ENSO信号远强于QBO信号,尤其是在厄尔尼诺—QBO东风位相情况下.
Haoxiang Wang;Jian Rao;Dong Guo;Yimin Liu;Yixiong Lu
State Key Laboratory of Environment Characteristics and Effects for Near-space/Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing University of Information Science and Technology,Nanjing,ChinaState Key Laboratory of Environment Characteristics and Effects for Near-space/Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing University of Information Science and Technology,Nanjing,ChinaState Key Laboratory of Environment Characteristics and Effects for Near-space/Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing University of Information Science and Technology,Nanjing,ChinaState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,ChinaCenter for Earth System Modeling and Prediction,China Meteorological Administration,Beijing,China
线性非线性热带平流层准两年振荡厄尔尼诺-南方涛动
LinearityNonlinearityQuasi-biennial oscillationEl niño-southern oscillation
《大气和海洋科学快报（英文版）》 2026 (4)
53-58,6
This work was financially supported by the National Natural Sci-ence Foundation of China[grant numbers 42175069,42322503,and 42361144843]and the Qinglan Project of Jiangsu of China.The ECMWF and Met Office Hadley Centre are acknowledged by the authors for the access provided to up-to-date reanalysis data(https://cds.climate.copernicus.eu/datasets).The authors thank the High Performance Computing Center of Nanjing University of Informa-tion Science & Technology for their support of this work.
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