CMIP6 models simulation of the connection between North/South Pacific Meridional Mode and ENSO

doi:10.1007/s00343-023-3024-6

IOCAS-IR > 海洋环流与波动重点实验室

	CMIP6 models simulation of the connection between North/South Pacific Meridional Mode and ENSO
	Lu, Yunlong 1,2,3,4; Feng, Junqiao 1,2,4; Hu, Dunxin 1,2,4
	2024-01-11
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	15
通讯作者	Feng, Junqiao([email protected])
摘要	The subtropical North and South Pacific Meridional Modes (NPMM and SPMM) are well known precursors of El Nino-Southern Oscillation (ENSO). However, relationship between them is not constant. In the early 1980, the relationship experienced an interdecadal transition. Changes in this connection can be attributed mainly to the phase change of the Pacific decadal oscillation (PDO). During the positive phase of PDO, a shallower thermocline in the central Pacific is responsible for the stronger trade wind charging (TWC) mechanism, which leads to a stronger equatorial subsurface temperature evolution. This dynamic process strengthens the connection between NPMM and ENSO. Associated with the negative phase of PDO, a shallower thermocline over southeastern Pacific allows an enhanced wind-evaporation-SST (WES) feedback, strengthening the connection between SPMM and ENSO. Using 35 Coupled Model Intercomparison Project Phase 6 (CMIP6) models, we examined the NPMM/SPMM performance and its connection with ENSO in the historical runs. The great majority of CMIP6 models can well reproduce the pattern of NPMM and SPMM, but reveal discrepant ENSO and NPMM/SPMM relationship. The intermodal uncertainty for the connection of NPMM-ENSO is due to different TWC mechanism. A stronger TWC mechanism will enhance NPMM forcing. For SPMM, few models can simulate a good relationship with ENSO. The intermodel spread in the relationship of SPMM and ENSO owing to SST bias in the southeastern Pacific, as WES feedback is stronger when the southeastern Pacific is warmer.
关键词	North and South Pacific Meridional Modes (NPMM and SPMM) El Nino-Southern Oscillation (ENSO) Pacific decadal oscillation (PDO) Coupled Model Intercomparison Project Phase 6 (CMIP6)
DOI	10.1007/s00343-023-3024-6
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[41976027]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:001141710300007
出版者	SCIENCE PRESS
WOS关键词	EL-NINO ; EQUATORIAL PACIFIC ; VARIABILITY ; OCEAN ; IMPACT ; ONSET ; WARM
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184372
专题	海洋环流与波动重点实验室
通讯作者	Feng, Junqiao
作者单位	1.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
第一作者单位	海洋环流与波动重点实验室; 中国科学院海洋研究所
通讯作者单位	海洋环流与波动重点实验室; 中国科学院海洋研究所
推荐引用方式 GB/T 7714	Lu, Yunlong,Feng, Junqiao,Hu, Dunxin. CMIP6 models simulation of the connection between North/South Pacific Meridional Mode and ENSO[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2024:15.
APA	Lu, Yunlong,Feng, Junqiao,&Hu, Dunxin.(2024).CMIP6 models simulation of the connection between North/South Pacific Meridional Mode and ENSO.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,15.
MLA	Lu, Yunlong,et al."CMIP6 models simulation of the connection between North/South Pacific Meridional Mode and ENSO".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2024):15.