Different Influences of Two El Nino Types on Low-Level Atmospheric Circulation over the Subtropical Western North Pacific
文献类型：期刊论文
| 作者 | Tan, Wei3,4; Wei, Zexun4; Liu, Qiang3; Fu, Qingjun3; Chen, Mengyan1,5; Li, Bingtian3; Li, Juan3 |
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2020 |
| 卷号 | 33期号:3页码:825 |
| 关键词 | Tropics El Nino ENSO Anticyclones Atmosphere-ocean interaction Air-sea interaction |
| ISSN号 | 0894-8755 |
| 英文摘要 | This study focuses on different evolutions of the low-level atmospheric circulations between eastern Pacific (EP) El Nino and central Pacific-II (CP-II) El Nino. The western North Pacific anomalous anticyclone (WNPAC) originates from the northern South China Sea for EP El Nino, and moves to the western North Pacific (WNP) afterward. Compared with EP El Nino, the origin of the WNPAC is farther west during CP-II El Nino, with the center over the Indochina Peninsula. Moreover, the WNPAC shows a weaker eastward shift. Such discrepancies are attributed to different evolutions of the cyclonic response over the WNP, which can suppress the convection in the western flank of the anomalous cyclone. The eastward retreat of the anomalous cyclone is significant for EP El Nino, but less evident for CP-II El Nino. These discrepancies are related to zonal evolutions of the increased precipitation over the equatorial Pacific. Following the southward migration of the intertropical convergence zone (ITCZ), the deep-convection region extends eastward along the equator, reinforcing the atmospheric response to the eastern Pacific warming in EP El Nino. For CP-II El Nino, the atmospheric response is insignificant over the eastern Pacific without warming. Moreover, the meridional migration of the ITCZ can modulate zonal variations of the easterly trade wind and specific humidity as well. Due to the combined effects of the climatological background and atmospheric anomalies, the specific humidity-induced and wind-induced moist enthalpy advection contribute to different shifts of the precipitation center. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18353]  |
| 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.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Reg Oceanog & Numer Modeling, Qingdao, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Minist Nat Resources, Inst Oceanog 1, Qingdao, Shandong, Peoples R China 4.Shandong Univ Sci & Technol, Ocean Sci & Engn Coll, Qingdao, Shandong, Peoples R China 5.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan, Wei,Wei, Zexun,Liu, Qiang,et al. Different Influences of Two El Nino Types on Low-Level Atmospheric Circulation over the Subtropical Western North Pacific[J]. JOURNAL OF CLIMATE,2020,33(3):825, 846. |
| APA | Tan, Wei.,Wei, Zexun.,Liu, Qiang.,Fu, Qingjun.,Chen, Mengyan.,...&Li, Juan.(2020).Different Influences of Two El Nino Types on Low-Level Atmospheric Circulation over the Subtropical Western North Pacific.JOURNAL OF CLIMATE,33(3),825. |
| MLA | Tan, Wei,et al."Different Influences of Two El Nino Types on Low-Level Atmospheric Circulation over the Subtropical Western North Pacific".JOURNAL OF CLIMATE 33.3(2020):825. |
入库方式： OAI收割
来源：南海海洋研究所
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