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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국기상학회 Asia-Pacific Journal of Atmospheric Sciences Journal of the Korean Meteorological Society Vol.42 No.2
발행연도
2006.4
수록면
87 - 105 (19page)

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초록· 키워드

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Various numerical simulations have been carried out for the precipitation systems of 6-7 August 2002 over the middle of the Korean peninsula. The 18-hour rainfall event with a maximum amount exceeding 300 ㎜ in this heavy rainfall case may be characterized by several convection bands. The scale of convective bands is 10-50 ㎞ wide and 100-300 ㎞ long. It is the purpose of this study to understand how the prediction of multiple convection bands is affected by horizontal resolution and model physics. Numerical simulations have been performed using WRF model with various grid spacing from 30 to 1.1-㎞. Impacts of horizontal resolution on the simulation of multiple convection bands have been investigated. This study has shown that high-resolution numerical model with horizontal grid size less than or close to 3.3-㎞ should be used for a proper prediction of heavy rainfall associated with multiple convection bands. According to sensitivity experiments, cumulus parameterization schemes used for coarse grid domains have strong impacts on the simulation of multiple convection bands in fine grid domains. In this case, the use of cumulus parameterization in coarse grid tends to produce results that agree less favorably with observation than those obtained without it. Effects of complexity of three WSM microphysics schemes on the simulation are also investigated through sensitivity experiments.

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Abstract
1. Introduction
2. Observation
3. Numerical model and experiment design
4. Results
5. Summary and conclusions
Acknowledgments
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