气候变化领域集成服务门户(CCPortal): Could the North Pacific oscillation be modified by the initiation of the East Asian winter monsoon?

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DOI	10.1175/JCLI-D-19-0112.1
	Could the North Pacific oscillation be modified by the initiation of the East Asian winter monsoon?
	Tseng Y.-H.; Ding R.; Zhao S.; Kuo Y.-C.; Liang Y.-C.
发表日期	2020
ISSN	0894-8755
起始页码	2389
结束页码	2406
卷号	33 期号:6
英文摘要	This study investigates the modulation of North Pacific Oscillation (NPO) variability upon initiation of the East Asian winter monsoon (EAWM). The data show that the initiation of EAWM in the Philippine Sea strongly connects to the southern lobe variability of the NPO in January followed by a basin-scale oceanic Victoria mode pattern. No apparent connection was found for the northern lobe of the NPO when the ENSO signals are removed. The strengthening of the EAWM in November interacts with the Kuroshio front and generates a low-level heating source in the Philippine Sea. Significant Rossby wave sources are then formed in the lower to midtroposphere. Wave ray tracing analyses confirm the atmospheric teleconnection established by the Rossby wave propagation in the mid- to upper troposphere. Analyses of the origin of wave trajectories from the Philippine Sea show a clear eastward propagating pathway that affects the southern lobe of the NPO from the southern lobe of the western Pacific pattern at 500 hPa and above on the time scale of 20 days. No ray trajectories from the lower troposphere can propagate eastward to influence the central-eastern subtropical Pacific. The wave propagation process is further supported by the coupled model experiments. © 2020 American Meteorological Society.
英文关键词	Atmospheric thermodynamics; Climatology; Ocean currents; Troposphere; Wave propagation; Coupled modeling; East Asian winter monsoon; Lower troposphere; Philippine seas; Propagation process; Ray trajectories; ROSSBY wave propagation; Upper troposphere; Mechanical waves; CMIP; experimental study; monsoon; Rossby wave; teleconnection; troposphere; wave propagation; Pacific Ocean; Pacific Ocean (Subtropical); Philippine Sea
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171405
作者单位	Institute of Oceanography, National Taiwan University, Taipei, Taiwan; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; Key Laboratory of Meteorological Disaster of Ministry of Education, College of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing, China; School of Ocean and Earth Science and Technology, University of Hawai‘i at Manoa, Honolulu, HI, United States; Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
推荐引用方式 GB/T 7714	Tseng Y.-H.,Ding R.,Zhao S.,et al. Could the North Pacific oscillation be modified by the initiation of the East Asian winter monsoon?[J],2020,33(6).
APA	Tseng Y.-H.,Ding R.,Zhao S.,Kuo Y.-C.,&Liang Y.-C..(2020).Could the North Pacific oscillation be modified by the initiation of the East Asian winter monsoon?.Journal of Climate,33(6).
MLA	Tseng Y.-H.,et al."Could the North Pacific oscillation be modified by the initiation of the East Asian winter monsoon?".Journal of Climate 33.6(2020).