DOI: 10.1002/joc.6013
Scopus记录号: 2-s2.0-85061596439
论文题名: Possible causes of the flooding over south China during the 2015/2016 winter
作者: Guo L. ; Zhu C. ; Liu B.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
语种: 英语
英文关键词: 2015/2016 super El Niño
; intra-seasonal oscillations
; South China
; winter flooding
Scopus关键词: Floods
; Rain
; Tropics
; Heavy rainfall
; Intra-seasonal
; Reanalysis
; South China
; Tibetan Plateau
; Water vapour
; Wave train
; Winter rainfall
; Tropical engineering
英文摘要: Sequential heavy rainfall clusters and resultant severe winter flooding was observed over South China during the 2015/2016 super El Niño event. In the present, the intra-seasonal oscillations (ISOs) related with heavy rainfall over East Asia from late autumn to early winter in 2015/2016 were investigated using the daily in situ rainfall records and the NCEP-DOE Reanalysis data set. Results suggested that the successive heavy winter rainfall events in 2015/2016 were contributed by the ISOs with significant periods of 10–25 and 30–45 days. The wet phase of 10–25-day ISO was jointly induced by the anomalous convergence of the low-level water vapour associated with the tropical–subtropical interaction and the upper-level divergence attributed to the eastwards propagating wavetrain. However in the wet phase of the 30–45-day ISO, the anomalous upper-level divergence was possibly caused by the weaker East Asian trough and the stronger barotropic westerly in subtropics. The 30–45-day ISO can facilitate the eastwards propagation of the 10–25-day ISO by providing a benefit upper-level waveguide. Afterwards, the low-level southwesterly surrounding the Tibetan Plateau gets enhanced to bring more moisture into South China where the winter flooding was serious in 2015/2016. In contrast, the more-than-normal winter rainfall was weaker in the super El Niño of 1997/1998 due to the lack of the 30–45-day ISO. Therefore, the strongest winter rainfall anomaly over SC was ascribed to the superposition between the wet phases of 10–25 and 30–45-day ISOs in 2015/2016. © 2019 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116622
Appears in Collections: 全球变化的国际研究计划
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作者单位: State Key Laboratory of Severe Weather and Institute of Climate System, Chinese Academy of Meteorological Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Guo L.,Zhu C.,Liu B.. Possible causes of the flooding over south China during the 2015/2016 winter[J]. International Journal of Climatology,2019-01-01