SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Tropical Biases in CMIP5 Multimodel Ensemble: The Excessive Equatorial Pacific Cold Tongue and Double ITCZ Problems
Li, G; Xie, SP; ligen@scsio.ac.cn
2014
Source PublicationJOURNAL OF CLIMATE
ISSN0894-8755
Volume27Issue:4Pages:1765-1780
AbstractErrors of coupled general circulation models (CGCMs) limit their utility for climate prediction and projection. Origins of and feedback for tropical biases are investigated in the historical climate simulations of 18 CGCMs from phase 5 of the Coupled Model Intercomparison Project (CMIP5), together with the available Atmospheric Model Intercomparison Project (AMIP) simulations. Based on an intermodel empirical orthogonal function (EOF) analysis of tropical Pacific precipitation, the excessive equatorial Pacific cold tongue and double intertropical convergence zone (ITCZ) stand out as the most prominent errors of the current generation of CGCMs. The comparison of CMIP-AMIP pairs enables us to identify whether a given type of errors originates from atmospheric models. The equatorial Pacific cold tongue bias is associated with deficient precipitation and surface easterly wind biases in the western half of the basin in CGCMs, but these errors are absent in atmosphere-only models, indicating that the errors arise from the interaction with the ocean via Bjerknes feedback. For the double ITCZ problem, excessive precipitation south of the equator correlates well with excessive downward solar radiation in the Southern Hemisphere (SH) midlatitudes, an error traced back to atmospheric model simulations of cloud during austral spring and summer. This extratropical forcing of the ITCZ displacements is mediated by tropical ocean-atmosphere interaction and is consistent with recent studies of ocean-atmospheric energy transport balance.
Department[Li, Gen] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China ; [Li, Gen ; Xie, Shang-Ping] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA ; [Li, Gen ; Xie, Shang-Ping] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA ; [Xie, Shang-Ping] Ocean Univ China, Phys Oceanog Lab, Qingdao, Shandong, Peoples R China
KeywordTropics Atmosphere-ocean Interaction Precipitation Climatology General Circulation Models Model Errors
Subject AreaMeteorology & Atmospheric Sciences
Funding OrganizationNational Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA ; National Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA ; National Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA ; National Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA
URL查看原文
Indexed Bysci
Funding ProjectLTO
Funding OrganizationNational Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA ; National Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA ; National Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA ; National Basic Research Program of China [2012CB955603]; NSF [ATM-0854365]; NOAA
WOS IDWOS:000330816100024
Citation statistics
Cited Times:205[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10577
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorligen@scsio.ac.cn
Recommended Citation
GB/T 7714
Li, G,Xie, SP,ligen@scsio.ac.cn. Tropical Biases in CMIP5 Multimodel Ensemble: The Excessive Equatorial Pacific Cold Tongue and Double ITCZ Problems[J]. JOURNAL OF CLIMATE,2014,27(4):1765-1780.
APA Li, G,Xie, SP,&ligen@scsio.ac.cn.(2014).Tropical Biases in CMIP5 Multimodel Ensemble: The Excessive Equatorial Pacific Cold Tongue and Double ITCZ Problems.JOURNAL OF CLIMATE,27(4),1765-1780.
MLA Li, G,et al."Tropical Biases in CMIP5 Multimodel Ensemble: The Excessive Equatorial Pacific Cold Tongue and Double ITCZ Problems".JOURNAL OF CLIMATE 27.4(2014):1765-1780.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.