文献类型：期刊文献

英文题名：Westerly wind bursts simulated in CAM4 and CCSM4

作者：Lian, Tao[1];Tang, Youmin[1,2];Zhou, Lei[1,3,4];Ul Islam, Siraj[2];Zhang, Chan[1];Li, Xiaojing[1];Ling, Zheng[5]

机构：[1]Second Inst Oceanog, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Zhejiang, Peoples R China;[2]Univ Northern British Columbia, Environm Sci & Engn, Prince George, BC, Canada;[3]Shanghai Jiao Tong Univ, Inst Oceanog, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;[4]Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266061, Peoples R China;[5]Guangdong Ocean Univ, Guangdong Key Lab Coastal Ocean Variabil & Disast, Zhanjiang, Peoples R China

年份：2018

卷号：50

期号：3-4

起止页码：1353

外文期刊名：CLIMATE DYNAMICS

收录：SCI-EXPANDED(收录号：WOS:000425328700037)、、Scopus(收录号：2-s2.0-85018492651)、WOS

基金：The NCEP reanalysis can be found in http://www.esrl.noaa.gov/psd/data. The CAM4 and CCSM4 code sources are from http://www.cesm.ucar.edu/models/ccsm4.0/cam. This work is supported by grants from the National Natural Science Foundation of China (41506025, 41690121, 41690120 and 41376034), the National Program on Global Change and Air-Sea Interaction (GASI-IPOVAI-02, GASI-IPOVAI-01-02, and GASI-IPOVAI-06) and the Zhejiang Provincial Natural Science Foundation of China (LQ15D060004).

语种：英文

外文摘要：The equatorial westerly wind bursts (WWBs) play an important role in modulating and predicting the El Nio-Southern Oscillation (ENSO). In this study, the ability of the Community Atmospheric Model version 4 (CAM4) and the Community Climate System Model version 4 (CCSM4) in simulating WWBs is systematically evaluated. Many characteristics of WWBs, including their longitude distributions, durations, zonal extensions, variabilities at seasonal, intraseasonal, and interannual timescales, as well as their relations with the Madden-Julian Oscillation (MJO) and ENSO, are discussed. Generally speaking, these characteristics of WWBs can be successfully reproduced by CAM4, owning to the improvement of the deep convection in the model. In CCSM4, significant bias such as the lack of the equatorial Pacific WWBs in boreal spring season and the weak modulation by a strong MJO are found. Our findings confirm the fact that the WWBs are greatly modulated by the surface temperature. It's also suggested that improving the air-sea coupling in CCSM4 may improve model performance in simulating WWBs, and may further improve the predictability of ENSO in the coupled model.