DOI: 10.1175/JCLI-D-17-0541.1
Scopus ID: 2-s2.0-85052791648
Title: Diversity of the Pacific-Japan Pattern among CMIP5 Models: Role of SST Anomalies and Atmospheric Mean Flow
Author: Gong H. ; Wang L. ; Chen W. ; Wu R. ; Huang G. ; Nath D.
Source Publication: Journal of Climate
ISSN: 8948755
Publishing Year: 2018
Volume: 31, Issue: 17 pages begin: 6857
pages end: 6877
Language: 英语
Keyword: Atmosphere-ocean interaction
; Climate models
; ENSO
; Monsoons
; Teleconnections
Scopus Keyword: Atmospheric movements
; Atmospheric pressure
; Atmospheric thermodynamics
; Climatology
; Coastal zones
; Energy conversion
; Mechanical waves
; Oceanography
; Surface waters
; Atmosphere-ocean interactions
; Coupled Model Intercomparison Project
; ENSO
; Monsoons
; Precipitation anomalies
; Sea surface temperature anomalies
; Teleconnections
; Western North Pacific
; Climate models
English Abstract: This study investigates the reproducibility of the spatial structure and amplitude of the observed Pacific- Japan (PJ) pattern in the phase 5 of the Coupled Model Intercomparison Project (CMIP5) models. In particular, the role of sea surface temperature anomalies (SSTAs) and atmospheric mean flow in the diverse reproducibility of the PJ pattern among models is investigated. Based on the pattern correlation between simulated and observed PJ patterns, models are categorized into high and low correlation groups, referred to asHCGand LCG, respectively. The observed cold SSTAs in the western North Pacific (WNP) and equatorial central Pacific, organized convection and precipitation anomalies, and Rossby wave response are reproduced well in HCG models, whereas these features are not present in LCG models. The summer SSTAs are closely tied to the preceding El Niño-Southern Oscillation and its temporal evolution in the tropical Indo-Pacific Ocean in both observations and models, but the SSTAs in the Indian Ocean are weak in bothHCG and LCG, implying a weak Indian Ocean capacitor effect. As a result, the reproducibility of the amplitude of the WNP center of the PJ pattern is mainly modulated by the SSTAs and local air-sea feedback over the WNP in the models. On the other hand, a model with stronger climatological southerly along the coast of East Asia tends to produce more realistic amplitude of the midlatitude center of the PJ pattern with clearer poleward waveactivity fluxes due to more efficient local barotropic energy conversion from the mean flow. © 2018 American Meteorological Society. Citation statistics:
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/111391
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
Affiliation: Center for Monsoon System Research, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Inst. of Atmospheric Physics, Chinese Academy of Sciences, Joint Center for Global Change Studies, Beijing, China
Recommended Citation:
Gong H.,Wang L.,Chen W.,et al. Diversity of the Pacific-Japan Pattern among CMIP5 Models: Role of SST Anomalies and Atmospheric Mean Flow[J]. Journal of Climate,2018-01-01,31(17)