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Western pacific warm pool and ENSO asymmetry in CMIP3 models
Sun Yan1,2,3,4; Sun, De-Zheng3,4; Wu Lixin2; Wang Fan1; Wang, F
2013-05-01
发表期刊ADVANCES IN ATMOSPHERIC SCIENCES
ISSN0256-1530
卷号30期号:3页码:940-953
文章类型Article
摘要Theoretical and empirical studies have suggested that an underestimate of the ENSO asymmetry may be accompanied by a climatologically smaller and warmer western Pacific warm pool. In light of this suggestion, simulations of the tropical Pacific climate by 19 Coupled Model Intercomparison Project Phase 3 (CMIP3) climate models that do not use flux adjustment were evaluated. Our evaluation revealed systematic biases in both the mean state and ENSO statistics. The mean state in most of the models had a smaller and warmer warm pool. This common bias in the mean state was accompanied by a common bias in the simulated ENSO statistics: a significantly weak asymmetry between the two phases of ENSO. Moreover, despite the generally weak ENSO asymmetry simulated by all models, a positive correlation between the magnitude of the bias in the simulated warm-pool size and the magnitude of the bias in the simulated ENSO asymmetry was found. These findings support the suggested link between ENSO asymmetry and the tropical mean state-the climatological size and temperature of the warm pool in particular. Together with previous studies, these findings light up a path to improve the simulation of the tropical Pacific mean state by climate models: enhancing the asymmetry of ENSO in the climate models.; Theoretical and empirical studies have suggested that an underestimate of the ENSO asymmetry may be accompanied by a climatologically smaller and warmer western Pacific warm pool. In light of this suggestion, simulations of the tropical Pacific climate by 19 Coupled Model Intercomparison Project Phase 3 (CMIP3) climate models that do not use flux adjustment were evaluated. Our evaluation revealed systematic biases in both the mean state and ENSO statistics. The mean state in most of the models had a smaller and warmer warm pool. This common bias in the mean state was accompanied by a common bias in the simulated ENSO statistics: a significantly weak asymmetry between the two phases of ENSO. Moreover, despite the generally weak ENSO asymmetry simulated by all models, a positive correlation between the magnitude of the bias in the simulated warm-pool size and the magnitude of the bias in the simulated ENSO asymmetry was found. These findings support the suggested link between ENSO asymmetry and the tropical mean state-the climatological size and temperature of the warm pool in particular. Together with previous studies, these findings light up a path to improve the simulation of the tropical Pacific mean state by climate models: enhancing the asymmetry of ENSO in the climate models.
关键词Warm Pool Enso Asymmetry Cmip3 Model Enso Time-mean Effect
学科领域Meteorology & Atmospheric Sciences
DOI10.1007/s00376-012-2161-1
URL查看原文
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000317779000029
WOS关键词CLIMATE SYSTEM MODEL ; OCEAN-ATMOSPHERE INTERACTION ; NINO SOUTHERN-OSCILLATION ; EL-NINO ; COUPLED MODEL ; INTERCOMPARISON PROJECT ; COLD-TONGUE ; HEAT TRANSPORTS ; AIR-TEMPERATURE ; SEA-ICE
WOS标题词Science & Technology ; Physical Sciences
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/16453
专题海洋环流与波动重点实验室
通讯作者Wang, F
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Ocean Univ China, Phys Oceanog Lab, Qingdao 266100, Peoples R China
3.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80305 USA
4.NOAA, Earth Syst Res Lab, Div Phys Sci, Boulder, CO 80305 USA
第一作者单位海洋环流与波动重点实验室
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Sun Yan,Sun, De-Zheng,Wu Lixin,et al. Western pacific warm pool and ENSO asymmetry in CMIP3 models[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2013,30(3):940-953.
APA Sun Yan,Sun, De-Zheng,Wu Lixin,Wang Fan,&Wang, F.(2013).Western pacific warm pool and ENSO asymmetry in CMIP3 models.ADVANCES IN ATMOSPHERIC SCIENCES,30(3),940-953.
MLA Sun Yan,et al."Western pacific warm pool and ENSO asymmetry in CMIP3 models".ADVANCES IN ATMOSPHERIC SCIENCES 30.3(2013):940-953.
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