Impact of the North Pacific Meridional Mode on the Tropical Pacific Modulated by the Interdecadal Pacific Oscillation
文献类型：期刊论文
| 作者 | Liu, Bowen3,4; Gan, Bolan2,3,4; Jia, Fan1,2; Wu, Lixin2,3,4 |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 37期号:7页码:2199-2216 |
| 关键词 | Pacific Ocean Air-sea interaction ENSO Interdecadal variability |
| ISSN号 | 0894-8755 |
| DOI | 10.1175/JCLI-D-23-0448.1 |
| 通讯作者 | Gan, Bolan(gbl0203@ouc.edu.cn) ; Jia, Fan(jiafan@qdio.ac) |
| 英文摘要 | The North Pacific meridional mode (NPMM) peaking in boreal spring influences El Nino-Southern Oscillation (ENSO) properties in the ensuing winter. Whether the precursory impact of NPMM on the spatial diversity of ENSO has decadal variation remains unknown. Using long-term reanalysis datasets, we find that the interdecadal Pacific oscillation (IPO) significantly modulates the NPMM forcing on two types of ENSO. During the positive IPO (1IPO) phase, a strengthened background Aleutian low and southward -shifted storm track, in comparison to the negative IPO (-IPO) phase, produce stronger basin -scale negative geopotential height tendency anomalies over the North Pacific through synopticscale eddy-mean flow interaction. Such strong background negative tendency facilitates an Aleutian low-like pressure monopole rather than a North Pacific Oscillation (NPO)-like pressure dipole in boreal spring, leading to a weak NPMM that cannot effectively promote development of either a central Pacific (CP) or an eastern Pacific (EP) ENSO. By contrast, the NPO-like dipole enhances in boreal spring during -IPO, corresponding to stronger and more frequently occurring NPMM events that induce a robust CP-ENSO-like response in boreal winter. Moreover, the -IPO-related tropical Pacific mean states and the associated positive feedbacks cause a strong decrease in mixed layer temperature variance in the equatorial eastern Pacific, but a slight increase in the central Pacific, thus further contributing to the enhanced correlation between NPMM and CP-ENSO. Therefore, -IPO has played a role in the stronger impact of NPMM on CP-ENSO since the 1990s, and the modulation effects of IPO should be considered in understanding the extratropical-tropical climatic connection and ENSO spatial diversity. |
| WOS关键词 | NINO-SOUTHERN OSCILLATION ; LAYER HEAT-BALANCE ; EL-NINO ; EASTERN-PACIFIC ; ASYMMETRIC MODULATION ; SURFACE-TEMPERATURE ; CLIMATE VARIABILITY ; BOOTSTRAP METHODS ; ENSO ; OCEAN |
| 资助项目 | Science and Technology Innovation Foundation of Laoshan Laboratory[LSKJ202202602] ; National Key Research and Development Program of China[2020YFA0608801] ; National Natural Science Foundation of China[42276016] ; National Natural Science Foundation of China[42376006] ; National Natural Science Foundation of China[2023YFF0805103] ; National Natural Science Foundation of China[LSKJ202202402] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2021205] ; Taishan Scholars Program[tsqn202312265] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001182112200001 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/184834]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Gan, Bolan; Jia, Fan |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Laoshan Lab, Qingdao, Peoples R China 3.Ocean Univ China, Acad Future Ocean, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao, Peoples R China 4.Ocean Univ China, Acad Future Ocean, Key Lab Phys Oceanog, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Bowen,Gan, Bolan,Jia, Fan,et al. Impact of the North Pacific Meridional Mode on the Tropical Pacific Modulated by the Interdecadal Pacific Oscillation[J]. JOURNAL OF CLIMATE,2024,37(7):2199-2216. |
| APA | Liu, Bowen,Gan, Bolan,Jia, Fan,&Wu, Lixin.(2024).Impact of the North Pacific Meridional Mode on the Tropical Pacific Modulated by the Interdecadal Pacific Oscillation.JOURNAL OF CLIMATE,37(7),2199-2216. |
| MLA | Liu, Bowen,et al."Impact of the North Pacific Meridional Mode on the Tropical Pacific Modulated by the Interdecadal Pacific Oscillation".JOURNAL OF CLIMATE 37.7(2024):2199-2216. |
入库方式： OAI收割
来源：海洋研究所
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