Representation of the Arctic Oscillation in the CMIP5 Models  

作　　者：ZUO Jin-Qing LI Wei-Jing REN Hong-Li 

机构地区：[1]Chinese Academy of Meteorological Sciences [2]Laboratory for Climate Studies,National Climate Center,China Meteorological Administration

出　　处：《Advances in Climate Change Research》2013年第4期242-249,共8页气候变化研究进展（英文版）

基　　金：supported by the National Basic Research Program of China(No.2010CB950501&2010CB950404);the National Natural Science Foundation of China(No.41205058);the China Postdoctoral Sci-ence Foundation(No.2012M510634)

摘　　要：The temporal variability and spatial pattern of the Arctic Oscillation(AO)simulated in the historical experiment of26 coupled climate models participating in the Coupled Model Intercomparison Project Phase 5(CMIP5)are evaluated.Spectral analysis of the monthly AO index indicates that 23 out of the 26 CMIP5 models exhibit no statistically significant spectral peak in the historical experiment,as seen in the observations.These models are able to reproduce the AO pattern in the sea level pressure anomaly field during boreal winter,but the intensity of the AO pattern tends to be overestimated in all the models.The zonal-mean zonal wind anomalies associated with the AO is dominated by a meridional dipole in the mid-high latitudes of the Northern Hemisphere during boreal winter,which is well reproduced by only a few models.Most models show significant biases in both strength and location of the dipole compared to the observation.In considering the temporal variability as well as spatial structures in both horizontal and vertical directions,the MPI-ESM-P model reproduces an AO pattern that resembles the observation the best.

关 键 词：Arctic Oscillation model evaluation coupled climate model CMIP5 

分 类 号：P461[天文地球—大气科学及气象学] TP18[自动化与计算机技术—控制理论与控制工程]