DOI: 10.1002/joc.5326
论文题名: Impact of boreal summer intra-seasonal oscillations on warm season diurnal convection activity in Taiwan
作者: Huang W.-R. ; Chang Y.-H.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 5 起始页码: 2187
结束页码: 2200
语种: 英语
英文关键词: diurnal convection
; East Asia
; intra-seasonal oscillation
Scopus关键词: Rain
; Thermodynamic stability
; DC characteristics
; East Asia
; Intra-seasonal
; Moisture convergence
; Rainfall intensity
; Sea breeze circulation
; South-westerly winds
; Thermal instabilities
; Tropical engineering
英文摘要: Diurnal convection (DC), which is characterized by rainy days with maximum rainfall during the afternoon without strong synoptic disturbances, is the most frequently observed weather system that affects local rainfall in Taiwan. In this study, we investigate the impact of boreal summer intra-seasonal oscillations (BSISOs) on the modulation of warm season (May–September) DC activities in Taiwan. Our analyses focus on (1) identifying the relationships between changes in DC characteristics (e.g. DC days and the mean rainfall intensities on DC days) and the phase evolutions of two types of BSISOs (including the 30–60-day ISO named BSISO1 and the 10–30-day ISO named BSISO2) and (2) the related maintenance mechanisms. Analyses of DC days demonstrate that the contribution of DC days to the total quantity of rainy days in Taiwan generally reaches a maximum value when Taiwan is being modulated by intensified southwesterly winds, intensified local sea breeze circulations, and intensified local thermal instabilities (i.e. phase 3 of BSISO1 and phase 7 of BSISO2). Analyses of the mean rainfall intensities on DC days show that maximum values are generally reached when the moisture convergence line propagates northwards over Taiwan (i.e. phase 1 of BSISO1 and phase 3 of BSISO2). Further examinations indicate that the abovementioned findings are not dependent upon the strengths of the BSISOs. © 2017 The Authors. International Journal of Climatology published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116937
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan
Recommended Citation:
Huang W.-R.,Chang Y.-H.. Impact of boreal summer intra-seasonal oscillations on warm season diurnal convection activity in Taiwan[J]. International Journal of Climatology,2018-01-01,38(5)