대기 (Atmosphere)

  • 제30권4호
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  • Pages.421-437
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  • 2020
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  • 1598-3560(pISSN)
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  • 2288-3266(eISSN)
한국기상학회 (Korean Meteorological Society)
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현실적인 빗방울 종단 낙하 속도-크기 관계의 처방이 한반도 여름철 지표 강수 모의에 미치는 영향

Effects of the Realistic Description for the Terminal Fall Velocity-Diameter Relationship of Raindrops on the Simulated Summer Precipitation over South Korea

  • 김다슬 (경북대학교 지구시스템과학부 천문대기과학과) ;
  • 임교선 (경북대학교 지구시스템과학부 천문대기과학과) ;
  • 김권일 (경북대학교 지구시스템과학부 천문대기과학과) ;
  • 이규원 (경북대학교 지구시스템과학부 천문대기과학과)
  • Kim, Da-Seul (Department of Astronomy and Atmospheric Sciences, School of Earth System Sciences, Kyungpook National University) ;
  • Lim, Kyo-Sun Sunny (Department of Astronomy and Atmospheric Sciences, School of Earth System Sciences, Kyungpook National University) ;
  • Kim, Kwonil (Department of Astronomy and Atmospheric Sciences, School of Earth System Sciences, Kyungpook National University) ;
  • Lee, GyuWon (Department of Astronomy and Atmospheric Sciences, School of Earth System Sciences, Kyungpook National University)
  • 투고 : 2020.08.31
  • 심사 : 2020.11.06
  • 발행 : 2020.12.31
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초록

The effects of the terminal fall velocity-diameter relationship for raindrops, which is prescribed based on the measurement, on the simulated surface precipitation over Korea during summer season were investigated in our study. Two rainfall cases, 1-month summer precipitation and mesoscale rainfall, have been simulated using the Weather Research and Forecasting (WRF) model. The selected cloud microphysics parameterizations are WRF Single-Moment 5-class (WSM5) and WRF Single-Moment 6-class (WSM6) in the WRF model. The measured terminal fall-diameter relationship for raindrops by Gunn and Kinzer (1949) was applied in both WSM5 and WSM6. The sensitivity experiments with WSM5 and WSM6, applying the measured fall-diameter relationship, presents the different responses in simulated precipitation amount for the 1-month summer precipitation case. Precipitation increases with WSM5, thus enhancing the precipitation statistical skills. However, precipitation decreases with WSM6 leading to the deterioration of precipitation statistical skills. For the mesoscale rainfall case, precipitation increases with both WSM5 and WSM6, which further enhances the positive bias in precipitation amount.

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참고문헌

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