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Cha, Dong-Hyun
High-impact Weather Prediction Lab (HWPL)
Research Interests
  • Typhoon Modeling, Regional Climate Modeling, High-impact Weather

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A regional climate change simulation over East Asia

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Title
A regional climate change simulation over East Asia
Author
Lee, Dong-KyouCha, Dong-HyunJin, Chun-SilChoi, Suk-Jin
Keywords
Climate change; regional climate model; dynamical downscaling; extreme climate; East Asia
Issue Date
201311
Publisher
KOREAN METEOROLOGICAL SOC
Citation
ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES, v.49, no.5, pp.655 - 664
Abstract
In this study, regional climate changes for seventy years (1980-2049) over East Asia and the Korean Peninsula are investigated using the Special Reports on Emission Scenarios (SRES) B1 scenario via a high-resolution regional climate model, and the impact of global warming on extreme climate events over the study area is investigated. According to future climate predictions for East Asia, the annual mean surface air temperature increases by 1.8A degrees C and precipitation decreases by 0.2 mm day(-1) (2030-2049). The maximum wind intensity of tropical cyclones increases in the high wind categories, and the intra-seasonal variation of tropical cyclone occurrence changes in the western North Pacific. The predicted increase in surface air temperature results from increased longwave radiations at the surface. The predicted decrease in precipitation is caused primarily by northward shift of the monsoon rain-band due to the intensified subtropical high. In the nested higher-resolution (20 km) simulation over the Korean Peninsula, annual mean surface air temperature increases by 1.5A degrees C and annual mean precipitation decreases by 0.2 mm day(-1). Future surface air temperature over the Korean Peninsula increases in all seasons due to surface temperature warming, which leads to changes in the length of the four seasons. Future total precipitation over the Korean Peninsula is decreased, but the intensity and occurrence of heavy precipitation events increases. The regional climate changes information from this study can be used as a fruitful reference in climate change studies over East Asia and the Korean peninsula.
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DOI
http://dx.doi.org/10.1007/s13143-013-0058-2
ISSN
1976-7633
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