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DOI: 10.1002/joc.5869
Scopus ID: 2-s2.0-85054477058
Title:
Possible impact of the diabatic heating over the Indian subcontinent on heat waves in South Korea
Author: Kim M.-K.; Oh J.-S.; Park C.-K.; Min S.-K.; Boo K.-O.; Kim J.-H.
Source Publication: International Journal of Climatology
ISSN: 8998418
Publishing Year: 2019
Volume: 39, Issue:3
pages begin: 1166
pages end: 1180
Language: 英语
Keyword: circum-global teleconnection ; convective activity ; diabatic heating ; heat wave ; Indian summer monsoon ; sensible heat flux ; stationary Rossby wave ; wave activity vector
Scopus Keyword: 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
English Abstract: 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
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被引频次[WOS]:1   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: 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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Affiliation: 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)
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