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DOI | 10.1175/JCLI-D-16-0454.1 |
The Role of Ocean Dynamical Thermostat in Delaying the El Nino-Like Response over the Equatorial Pacific to Climate Warming | |
Luo, Yiyong1,2; Lu, Jian3; Liu, Fukai1,2; Garuba, Oluwayemi3 | |
2017-04-01 | |
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:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The role of ocean dynamics in the response of the equatorial Pacific Ocean to climate warming is investigated using both an atmosphere-ocean coupled climate system and its ocean component. Results show that the initial response (fast pattern) to an uniform heating imposed on the ocean is a warming centered to the west of the date line owing to the conventional ocean dynamical thermostat (ODT) mechanism in the eastern equatorial Pacific-a cooling effect arising from the up-gradient upwelling. In time, the warming pattern gradually propagates eastward, becoming more El Nino-like (slow pattern). The transition from the fast to the slow pattern likely results from 1) the gradual warming of the equatorial thermocline temperature, which is associated with the arrival of the relatively warmer extratropical waters advected along the subsurface branch of the subtropical cells (STCs), and 2) the reduction of the STC strength itself. A mixed layer heat budget analysis finds that it is the total ocean dynamical effect rather than the conventional ODT that holds the key for understanding the pattern of the SST in the equatorial Pacific and that the surface heat flux works mainly to compensate the ocean dynamics. Further passive tracer experiments with the ocean component of the coupled system verify the role of the ocean dynamical processes in initiating a La Nina-like SST warming and in setting the pace of the transition to an El Nino-like warming and identify an oceanic origin for the slow eastern Pacific warming independent of the weakening trade wind. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399679900006 |
WOS关键词 | SURFACE-TEMPERATURE ; ATMOSPHERE MODEL ; HEAT UPTAKE ; VARIABILITY ; CIRCULATION ; PATTERNS ; CO2 |
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/20303 |
专题 | 气候变化 |
作者单位 | 1.Ocean Univ China, CIMST, 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 | Luo, Yiyong,Lu, Jian,Liu, Fukai,et al. The Role of Ocean Dynamical Thermostat in Delaying the El Nino-Like Response over the Equatorial Pacific to Climate Warming[J]. JOURNAL OF CLIMATE,2017,30(8). |
APA | Luo, Yiyong,Lu, Jian,Liu, Fukai,&Garuba, Oluwayemi.(2017).The Role of Ocean Dynamical Thermostat in Delaying the El Nino-Like Response over the Equatorial Pacific to Climate Warming.JOURNAL OF CLIMATE,30(8). |
MLA | Luo, Yiyong,et al."The Role of Ocean Dynamical Thermostat in Delaying the El Nino-Like Response over the Equatorial Pacific to Climate Warming".JOURNAL OF CLIMATE 30.8(2017). |
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