Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-018-4219-y |
Understanding the effect of an excessive cold tongue bias on projecting the tropical Pacific SST warming pattern in CMIP5 models | |
Ying, Jun1; Huang, Ping2,3; Lian, Tao1; Tan, Hongjian4 | |
2019-02-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:1805-1818 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | An excessive cold tongue is a common bias among current climate models, and considered an important source of bias in projections of tropical Pacific climate change under global warming. Specifically, the excessive cold tongue bias is closely related to the tropical Pacific SST warming (TPSW) pattern. In this study, we reveal that two processes are the critical mechanisms by which the excessive cold tongue bias influences the projection of the TPSW pattern, based on 32 models from phase 5 of Coupled Model Intercomparison Projection (CMIP5). On the one hand, by assuming that the shortwave (SW) radiation to SST feedback is linearly correlated to the cold tongue SST, the excessive cold tongue bias can induce an overly weak negative SW-SST feedback in the central Pacific, which can lead to a positive SST warming bias in the central to western Pacific (around 150 degrees E-140 degrees W). Moreover, the overly weak local atmospheric dynamics response to SST is a key process of the overly weak SW-SST feedback, compared with the cloud response to atmospheric dynamics and the SW radiation response to cloud. On the other hand, the overly strong ocean zonal overturning circulation associated with the excessive cold tongue bias results in an overestimation of the ocean dynamical thermostat effect, with enhanced ocean stratification under global warming, leading to a negative SST warming bias in the central and eastern Pacific (around 170 degrees W-120 degrees W). These two processes jointly form a positive SST warming bias in the western Pacific, contributing to a La Nina-like warming bias. Therefore, we suggest a more realistic climatological cold tongue SST is needed for a more reliable projection of the TPSW pattern. |
英文关键词 | Cold tongue bias Tropical Pacific SST warming pattern SW-SST feedback Ocean dynamics CMIP5 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460902200029 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; EQUATORIAL PACIFIC ; MULTIMODEL ENSEMBLE ; OCEAN ; UNCERTAINTY ; PRECIPITATION ; FEEDBACK ; MECHANISMS ; CONVECTION ; REANALYSIS |
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/35275 |
专题 | 气候变化 |
作者单位 | 1.State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100190, Peoples R China; 3.Joint Ctr Global Change Studies JCGCS, Beijing 100875, Peoples R China; 4.State Ocean Adm, Inst Oceanog 3, Key Lab Global Change & Marine Atmospher Chem, Xiamen 361005, Peoples R China |
推荐引用方式 GB/T 7714 | Ying, Jun,Huang, Ping,Lian, Tao,et al. Understanding the effect of an excessive cold tongue bias on projecting the tropical Pacific SST warming pattern in CMIP5 models[J]. CLIMATE DYNAMICS,2019,52:1805-1818. |
APA | Ying, Jun,Huang, Ping,Lian, Tao,&Tan, Hongjian.(2019).Understanding the effect of an excessive cold tongue bias on projecting the tropical Pacific SST warming pattern in CMIP5 models.CLIMATE DYNAMICS,52,1805-1818. |
MLA | Ying, Jun,et al."Understanding the effect of an excessive cold tongue bias on projecting the tropical Pacific SST warming pattern in CMIP5 models".CLIMATE DYNAMICS 52(2019):1805-1818. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论