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DOI | 10.1007/s00382-018-4416-8 |
The dominant role of the atmospheric component of coupled models in ENSO amplitude simulations | |
Tang, Yanli1; Li, Lijuan1; Wang, Bin1,2; Lin, Pengfei1; Chen, Lin3,4; Xie, Feng1; Dong, Wenjie5; Xia, Kun1 | |
2019-04-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:4833-4847 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | To explore the relative contributions of the atmospheric and oceanic components of coupled models to ENSO amplitude simulations, we innovatively assembled four coupled models and performed analyses on their ENSO simulations. Specifically, the atmospheric and oceanic components of two commonly used coupled models are cross-coupled to construct four parent models. Based on the simulated ENSO amplitude, the four parent models are classified into two groups: Grid-point Atmospheric Model of IAP LASG Version 2 (GAMIL2)-based models whose ENSO amplitudes are comparable to (although slightly weaker than) observations, and Community Atmosphere Model Version 4.0 (CAM4)-based models whose ENSO amplitudes reach up to twice those of observations. The BJ-index analysis reveals that the atmospheric components modulate ENSO amplitude by affecting the atmospheric thermodynamic (TD) feedback and the oceanic thermocline (TH) feedback. The TD feedback biases in the CAM4-based models are attributable to an overly negative low-cloud fraction feedback and low-cloud liquid water feedback in the Nino-3 region. The underestimated TH feedback in the GAMIL2-based models is due to an underestimated mean upwelling (w) over bar), while the seemingly accurate TH term in the CAM4-based models is the result of compensation by an overestimated regression of zonal tilt of the thermocline on the equatorial zonal wind stress (h) and an underestimated (w) over bar. Furthermore, h dominates TH differences in the two atmospheric groups, and is mainly associated with the normalized wind stress anomaly over the Nino-4 region and the vertical ocean subsurface temperature structure. |
英文关键词 | GAMIL2-based models CAM4-based models BJ-index Thermodynamic feedback Thermocline feedback |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467187600056 |
WOS关键词 | TROPICAL OCEAN-ATMOSPHERE ; SEA-SURFACE TEMPERATURE ; EL-NINO ; SYSTEM MODEL ; COLD-TONGUE ; FEEDBACKS ; WIND ; CONVECTION ; PREDICTION ; CYCLE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181926 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China; 2.Tsinghua Univ, CESS, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China; 3.Univ Hawaii Manoa, Int Pacific Res Ctr, 2525 Correa Rd, Honolulu, HI 96822 USA; 4.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, 2525 Correa Rd, Honolulu, HI 96822 USA; 5.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Peoples R China |
推荐引用方式 GB/T 7714 | Tang, Yanli,Li, Lijuan,Wang, Bin,et al. The dominant role of the atmospheric component of coupled models in ENSO amplitude simulations[J]. CLIMATE DYNAMICS,2019,52:4833-4847. |
APA | Tang, Yanli.,Li, Lijuan.,Wang, Bin.,Lin, Pengfei.,Chen, Lin.,...&Xia, Kun.(2019).The dominant role of the atmospheric component of coupled models in ENSO amplitude simulations.CLIMATE DYNAMICS,52,4833-4847. |
MLA | Tang, Yanli,et al."The dominant role of the atmospheric component of coupled models in ENSO amplitude simulations".CLIMATE DYNAMICS 52(2019):4833-4847. |
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