DOI: 10.1002/joc.5869
Scopus记录号: 2-s2.0-85054477058
论文题名: Possible impact of the diabatic heating over the Indian subcontinent on heat waves in South Korea
作者: Kim M.-K. ; Oh J.-S. ; Park C.-K. ; Min S.-K. ; Boo K.-O. ; Kim J.-H.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 3 起始页码: 1166
结束页码: 1180
语种: 英语
英文关键词: circum-global teleconnection
; convective activity
; diabatic heating
; heat wave
; Indian summer monsoon
; sensible heat flux
; stationary Rossby wave
; wave activity vector
Scopus关键词: Climatology
; Fluxes
; Heat flux
; Heating
; Mechanical waves
; Regression analysis
; Convective activity
; Diabatic heating
; Heat waves
; Indian summer monsoon
; Rossby wave
; Sensible heat flux
; Teleconnections
; Wave activity
; Heat convection
英文摘要: We investigate the impact of the diabatic heating (Q1) over the Indian subcontinent and Tibetan Plateau (TP) sensible heat on the heat waves in South Korea in July and August over a recent 42-year period. In particular, we emphasize the role of the convective activity across the region from northeastern Pakistan to northwestern India (PWI) induced by the heat from the TP, especially over the western and eastern TP. A composite analysis indicates that the composite differences between the heat-wave summers (HWS) and non-heat-wave summers (NHWS) resemble the circum-global teleconnection (CGT) pattern, which generates a high-pressure anomaly over the Korean Peninsula, producing favourable conditions for heat waves in South Korea. The first coupled mode of the geopotential height at 250 hPa with the daily maximum temperature (TM) for July and August in South Korea is consistent with the composite pattern, suggesting that the diabatic heating over the Indian subcontinent induces a high-pressure anomaly over the Korean Peninsula through a CGT-like mechanism. The regression analysis of the wind vectors in the upper troposphere also indicates that the diabatic heating over the PWI region and associated TP sensible heating generates the strong convection over the PWI region, which corresponds to the anomalous anticyclonic circulation at 250 hPa over the western TP and the cyclonic circulation at 850 hPa over the PWI region. Moreover, the correlation patterns of the 250-hPa geopotential height with the normalized rainfall amount index (IMRI) over the PWI region and the wave activity flux pattern confirm that the strong convective activity over the PWI region contributes to the anomalous high pressure and heat waves over the Korean Peninsula. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116557
Appears in Collections: 全球变化的国际研究计划
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作者单位: Department of Atmospheric Science, Kongju National University, Gongju, South Korea; Department of Marine Forecast, Geosystem Research Corporation, Gunpo, South Korea; School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, South Korea; Korea Meteorological Administration, Seoul, South Korea
Recommended Citation:
Kim M.-K.,Oh J.-S.,Park C.-K.,et al. Possible impact of the diabatic heating over the Indian subcontinent on heat waves in South Korea[J]. International Journal of Climatology,2019-01-01,39(3)