Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-019-04637-z |
Towards understanding the suppressed ENSO activity during mid-Holocene in PMIP2 and PMIP3 simulations | |
Chen, Lin1,2,3; Zheng, Weipeng2,4; Braconnot, Pascale5 | |
2019-07-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:1095-1110 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; France |
英文摘要 | The mechanisms of El Nino-Southern Oscillation (ENSO) variability change during the mid-Holocene (MH) were investigated through analyzing the model simulations from the Paleoclimate Modelling Intercomparison Project Phases (PMIP) phase-2 and phase-3. The majority of PMIP2 and PMIP3 model simulations show a lower level of ENSO activity in the MH simulation compared to the pre-industrial (PI) simulation, which is qualitatively consistent with that inferred from the paleoclimate proxies. Through employing the Bjerknes stability index, we quantified the dynamic and thermodynamic air-sea feedbacks in the PI and MH simulations. The quantitative analyses showed that the reduced ENSO variability in MH arose from the weakening in the thermocline (TH), zonal-advection (ZA) and Ekman (EK) feedback terms. We found that all the weakened TH, ZA, and EK terms are associated with the reduction in the response of anomalous thermocline depth (D') to the zonal wind stress anomaly (x) in MH compared to PI. The reduced D' response is attributed to the flattened meridional structure of ENSO-related x field in MH, which is linked to the enhanced surface poleward mean meridional current in MH. Among many aspects of the mean state changes under the MH orbital forcing, this study identified that the surface mean meridional current change might be a key factor behind the suppressed ENSO variability in MH. Lastly, through comparing our findings with the ENSO future projection studies, we found that the wind-thermocline feedback is susceptible in a changing climate, which implies that minimizing the uncertainty in the wind-thermocline feedback change may help constrain future ENSO response. |
英文关键词 | ENSO amplitude change in mid-Holocene BJ index Air-sea feedback Ocean dynamical processes Meridional structure change |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471722400063 |
WOS关键词 | EL-NINO/SOUTHERN OSCILLATION ; TROPICAL PACIFIC CLIMATE ; LAST GLACIAL MAXIMUM ; SOUTHERN-OSCILLATION ; COUPLED SIMULATIONS ; NINO ; VARIABILITY ; MODEL ; OCEAN ; STABILITY |
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/184346 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, CIC FEMD, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster,Minist Educ KLME, Nanjing 210044, Jiangsu, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China; 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China; 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China; 5.Univ Paris Saclay, UVSQ, CNRS, LSCE,IPSL,CEA, Bat 714, F-91191 Gif Sur Yvette, France |
推荐引用方式 GB/T 7714 | Chen, Lin,Zheng, Weipeng,Braconnot, Pascale. Towards understanding the suppressed ENSO activity during mid-Holocene in PMIP2 and PMIP3 simulations[J]. CLIMATE DYNAMICS,2019,53:1095-1110. |
APA | Chen, Lin,Zheng, Weipeng,&Braconnot, Pascale.(2019).Towards understanding the suppressed ENSO activity during mid-Holocene in PMIP2 and PMIP3 simulations.CLIMATE DYNAMICS,53,1095-1110. |
MLA | Chen, Lin,et al."Towards understanding the suppressed ENSO activity during mid-Holocene in PMIP2 and PMIP3 simulations".CLIMATE DYNAMICS 53(2019):1095-1110. |
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