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DOI | 10.1175/JCLI-D-17-0011.1 |
Asymmetric Response of the Equatorial Pacific SST to Climate Warming and Cooling | |
Liu, Fukai1,2; Luo, Yiyong1,2; Lu, Jian3; Garuba, Oluwayemi3; Wan, Xiuquan1,2 | |
2017-09-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The response of the equatorial Pacific Ocean to heat fluxes of equal amplitude but opposite sign is investigated using the Community Earth System Model (CESM). Results show a strong asymmetry in SST changes. In the eastern equatorial Pacific (EEP), the warming responding to the positive forcing exceeds the cooling response to the negative forcing, whereas in the western equatorial Pacific (WEP) it is the other way around and the cooling surpasses the warming. This leads to a zonal dipole asymmetric structure, with positive values in the east and negative values in the west. A surface heat budget analysis suggests that the SST asymmetry mainly results from the oceanic horizontal advection and vertical entrainment, with both of their linear and nonlinear components playing a role. For the linear component, its change appears to be more significant over the EEP (WEP) in the positive (negative) forcing scenario, favoring the seesaw pattern of the SST asymmetry. For the nonlinear component, its change acts to warm (cool) the EEP (WEP) in both scenarios, also favorable for the development of the SST asymmetry. Additional experiments with a slab ocean confirm the dominant role of ocean dynamical processes for this SST asymmetry. The net surface heat flux, in contrast, works to reduce the SST asymmetry through its shortwave radiation and latent heat flux components, with the former being related to the nonlinear relationship between SST and convection, and the latter being attributable to Newtonian damping and air-sea stability effects. The suppressing effect of shortwave radiation on SST asymmetry is further verified by partially coupled overriding experiments. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408613400010 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; OCEAN-ATMOSPHERE MODEL ; EL-NINO ; TROPICAL PACIFIC ; LA-NINA ; GREENHOUSE-GAS ; NORTH PACIFIC ; MEAN RESPONSE ; HEAT-BUDGET ; ENSO |
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/20684 |
专题 | 气候变化 |
作者单位 | 1.Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Phys Oceanog Lab, Qingdao, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China; 3.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA |
推荐引用方式 GB/T 7714 | Liu, Fukai,Luo, Yiyong,Lu, Jian,et al. Asymmetric Response of the Equatorial Pacific SST to Climate Warming and Cooling[J]. JOURNAL OF CLIMATE,2017,30(18). |
APA | Liu, Fukai,Luo, Yiyong,Lu, Jian,Garuba, Oluwayemi,&Wan, Xiuquan.(2017).Asymmetric Response of the Equatorial Pacific SST to Climate Warming and Cooling.JOURNAL OF CLIMATE,30(18). |
MLA | Liu, Fukai,et al."Asymmetric Response of the Equatorial Pacific SST to Climate Warming and Cooling".JOURNAL OF CLIMATE 30.18(2017). |
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