한국지구과학회지 제40권 제4호 (p.382-391)

Application of Vertical Grid-nesting to the Tropical Cyclone Track and Intensity Forecast

키워드 :
vertical grid nesting,numerical weather forecast,Weather research and forecast,tropical cyclone,bogus method

목차

Abstract
1. Introduction
2. Model and Parameters
3. Initialization of Tropical Cyclones
4. Results and Discussion
5. Concluding Remarks
References

초록

The impact of vertical grid-nesting on the tropical cyclone intensity and track forecast was investigated using the Weather Research and Forecast (WRF) version 3.8 and the initialization method of the Structure Adjustable Balanced Bogus Vortex (SABV). For a better resolution in the central part of the numerical domain, where the tropical cyclone of interest is located, a horizontal and vertical nesting technique was employed. Simulations of the tropical cyclone Sanba (16th in 2012) indicated that the vertical nesting had a weak impact on the cyclone intensity and little impact on the track forecast. Further experiments revealed that the performance of forecast was quite sensitive to the horizontal resolution, which is in agreement with previous studies. The improvement is due to the fact that horizontal resolution can improve forecasts not only on the tropical cyclone-scale but also for large-scale disturbances.