Indian Ocean Variability in the CMIP5 Multimodel Ensemble: The Basin Mode
Indian Ocean Variability in the CMIP5 Multimodel Ensemble: The Basin Mode
复制标题
CMIP5 多模型系综中的印度洋变化:盆地模式
DOI:
10.1175/jcli-d-12-00678.1
复制
发表时间:
2013-09
影响因子:
4.9
通讯作者:
Huang Gang
中科院分区:
文献类型:
--
作者:
Yang Ya-Li;Zheng Xiao-Tong;Liu Lin;Huang Gang
This study evaluates the simulation of the Indian Ocean Basin (IOB) mode and relevant physical processes in models from phase 5 of the Coupled Model Intercomparison Project (CMIP5). Historical runs from 20 CMIP5 models are available for the analysis. They reproduce the IOB mode and its close relationship to El Nino-Southern Oscillation (ENSO). Half of the models capture key IOB processes: a downwelling oceanic Rossby wave in the southern tropical Indian Ocean (TIO) precedes the IOB development in boreal fall and triggers an antisymmetric wind anomaly pattern across the equator in the following spring. The anomalous wind pattern induces a second warming in the north Indian Ocean (NIO) through summer and sustains anticyclonic wind anomalies in the northwest Pacific by radiating a warm tropospheric Kelvin wave. The second warming in the NIO is indicative of ocean-atmosphere interaction in the interior TIO. More than half of the models display a double peak in NIO warming, as observed following El Nino, while the rest show only one winter peak. The intermodel diversity in the characteristics of the IOB mode seems related to the thermocline adjustment in the south TIO to ENSO-induced wind variations. Almost all the models show multidecadal variations in IOB variance, possibly modulated by ENSO.
登录
查看更多内容
影响因子:
4.9
作者:
de Boyer Montegut, Clement;Vialard, Jerome;Madec, Gurvan
通讯作者:
Madec, Gurvan
影响因子:
4.9
作者:
N. Saji;S. Xie;T. Yamagata
通讯作者:
N. Saji;S. Xie;T. Yamagata
影响因子:
64.8
作者:
Saji, NH;Goswami, BN;Yamagata, T
通讯作者:
Yamagata, T
影响因子:
4.9
作者:
Huang, Gang;Hu, Kaiming;Xie, Shang-Ping
通讯作者:
Xie, Shang-Ping
影响因子:
--
作者:
S. Xie;Q. Xie;Dongxiao Wang;W. Liu
通讯作者:
S. Xie;Q. Xie;Dongxiao Wang;W. Liu