Precessional Forced Zonal Triple-Pole Anomalies in the Tropical Pacific Annual Cycle
文献类型：期刊论文
| 作者 | Wang, Yue; Jian, Zhimin; Zhao, Ping1; Xu, Kang4; Dang, Haowen; Liu, Zhongfang; Xiao, Dong3; Chen, Junming3; 163wangyue@tongji.edu.cn |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2019 |
| 卷号 | 32期号:21页码:7369 |
| 关键词 | Paleoclimate |
| DOI | 10.1175/JCLI-D-18-0668.1 |
| 英文摘要 | Based on a transient simulation of the Community Earth System Model, we identified two anomalous "zonal triple-pole type" annual cycles in the equatorial Pacific sea surface temperature (SST), which were induced by precessional evolution of the summer-minus-winter insolation difference and the autumn-minus-spring insolation difference, respectively. For example, due to the increased summer-winter insolation contrast, a zonal positive-negative-positive pattern of equatorial SST anomalies was detected after subtracting basin-scale summer SST warming. The positive SST anomalies were associated with anomalous upward air flows over the western Pacific and eastern Pacific, whereas the negative SST anomalies in the central Pacific were coupled with anomalous downward air flows, oceanic upwelling, and thermocline cooling. These central Pacific anomalies were due to multiple air-sea interactions, particularly zonal advection feedback and Bjerknes feedback. This anomalous annual cycle also included winter equatorial air-sea coupled anomalies with similar spatial patterns but opposite signs. The annual mean equatorial rainfall was significantly increased west of 135 degrees E but decreased between 135 degrees E and 160 degrees W in response to the moderately intensified Walker circulation west of 160 degrees W. The autumn-spring insolation contrast induced similar seasonal reversed anomalies during autumn and spring, but the annual means were only weakly enhanced for the Walker circulation and the rainfall anomalies had smaller magnitudes east of 160 degrees E. These distinct responses of the annual mean climate indicated different seasonal biases in terms of the equatorial SST and associated Walker circulation anomalies due to forcing by the two seasonal insolation contrasts, and these findings had meaningful implications for paleoceanographic studies. |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41606045, 41630965, 91428310, 41405078, 41606049, 41776023]; Rising Star Foundation of the South China Sea Institute of Oceanology [NHXX2018WL0201]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [10120172016KJ005] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41606045, 41630965, 91428310, 41405078, 41606049, 41776023]; Rising Star Foundation of the South China Sea Institute of Oceanology [NHXX2018WL0201]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [10120172016KJ005] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18208]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China 2.Chinese Acad Meteorol Sci, Beijing, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China 4.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yue,Jian, Zhimin,Zhao, Ping,et al. Precessional Forced Zonal Triple-Pole Anomalies in the Tropical Pacific Annual Cycle[J]. JOURNAL OF CLIMATE,2019,32(21):7369, 7402. |
| APA | Wang, Yue.,Jian, Zhimin.,Zhao, Ping.,Xu, Kang.,Dang, Haowen.,...&163wangyue@tongji.edu.cn.(2019).Precessional Forced Zonal Triple-Pole Anomalies in the Tropical Pacific Annual Cycle.JOURNAL OF CLIMATE,32(21),7369. |
| MLA | Wang, Yue,et al."Precessional Forced Zonal Triple-Pole Anomalies in the Tropical Pacific Annual Cycle".JOURNAL OF CLIMATE 32.21(2019):7369. |
入库方式： OAI收割
来源：南海海洋研究所
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