DOI: 10.1007/s00382-017-4031-0
Scopus记录号: 2-s2.0-85037674315
论文题名: Inter-decadal variation of the Tropical Atlantic-Korea (TA-K) teleconnection pattern during boreal summer season
作者: Ham Y.-G. ; Hwang Y.J. ; Lim Y.-K. ; Kwon M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-07-08 起始页码: 2609
结束页码: 2621
语种: 英语
英文关键词: Atmospheric teleconnections
; Precipitation variability over Korean peninsula
; Tropical Atlantic SST variability
英文摘要: The inter-decadal variation of the positive relationship between the tropical Atlantic sea surface temperature (SST) and Korean precipitation during boreal summer season during 1900–2010 is examined. The 15-year moving correlation between the Tropical Atlantic SST (TAtlSST) index (SST anomalies from 30°S to 30°N and 60°W to 20°E) and Korean precipitation (precipitation anomalies from 35°–40°N to 120°–130°E) during June–July–August exhibits strong inter-decadal variation, which becomes positive at the 95% confidence level after the 1980s. Intensification of the linkage between the TAtlSST index and Korean precipitation after the 1980s is attributed to global warming via the increased background SST. The increase in the background SST over the Atlantic provides background conditions that enhance anomalous convective activity by anomalous Atlantic SST warming. Therefore, the overall atmospheric responses associated with the tropical Atlantic SST warming could intensify. The correlation between the TAtlSST index and Korean precipitation also exhibits strong inter-decadal variation within 1980–2010, which is over 0.8 during early 2000s, while it is relative low (i.e., around 0.6) during the early 1980s. The enhanced co-variability between the tropical and the mid-latitude Atlantic SST during the early 2000s indicates the intensification of TAtlSST-related Rossby wave source over the mid-latitude Atlantic, which excites stationary waves propagated from the Atlantic to the Korean peninsula across northern Europe and northeast Asia. This Rossby-wave train induces a cyclonic flow over the northern edge of the Korea, which intensifies southwesterly and results in precipitation over Korea. This observed decadal difference is well simulated by the stationary wave model experiments with a prescribed TAtlSST-related Rossby wave source over the mid-latitude Atlantic. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109079
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Faculty of Earth Systems and Environmental Sciences, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 500-757, South Korea; NASA Goddard Space Flight Center, Global Modeling and Assimilation Office, Goddard Earth Sciences Technology and Research, I. M. Systems Group, Greenbelt, United States; Ocean Circulation and Climate Research Center, Korea Institute of Ocean Science and Technology, Ansan, South Korea
Recommended Citation:
Ham Y.-G.,Hwang Y.J.,Lim Y.-K.,et al. Inter-decadal variation of the Tropical Atlantic-Korea (TA-K) teleconnection pattern during boreal summer season[J]. Climate Dynamics,2018-01-01,51(2018-07-08)