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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The objective of this study is to examine the impact of urban canopy and the horizontal resolution on simulated meteorological variables such as 10-m wind speed, 2-m temperature and precipitation using WRF model for a local, convective rainfall case. We performed four sensitivity tests by varying the use of urban canopy model (UCM) and the horizontal resolution, then compared the model results with observations of AWS network. The focus of our study is over the Seoul metropolitan area for a convective rainfall that occurred on 16 August 16 2015. The analysis shows that mean diurnal variation of temperature is better simulated by the model runs with UCM before the convective rainfall. However, after rainfall, model shows significant difference in air temperature among sensitivity tests depending on the simulated rainfall amount. The rainfall amount is significantly underestimated in 0.5 km resolution model run compared to 1.5 km resolution, particularly over the urban areas. This is due to earlier occurrence of light rainfall in 0.5 km resolution model. Earlier light rainfall in the afternoon eliminates convective instability significantly, which prevents occurrence of rainfall later in the evening. The use of UCM results in a higher maximum rainfall in the domain, which is due to higher temperature in model runs with urban canopy. Earlier occurrence of rainfall in 0.5 km resolution model is related to rapid growth of PBL. Enhanced mixing and higher temperature result in rapid growth of PBL, which provides more favorable conditions for convection in the 0.5 km resolution run with urban canopy. All sensitivity tests show dry bias, which also contributes to the occurrence of light precipitation throughout the simulation period.
목차
Abstract
1. 서론
2. 자료 및 방법
3. 결과
4. 요약 및 결론
REFERENCES
참고문헌 (20)
참고문헌 신청
Büttner, G., G. Feranec, and G. Jaffrain, 2002: Corine Land Cover update 2000. Technical guidelines, EEA Technical report No 89, 56 pp. [Available online at http:// edz.bib.uni-mannheim.de/daten/edz-bn/eua/02/techrep89. pdf].
Hong, S.-Y., Y. Noh, and J. Dudhia, 2006: A new vertical diffusion package with explicit treatment of entrainment processes. Mon. Wea. Rev., 134, 2318-2341.
Kain, J. S., and J. M. Fritsch, 1993: Convective parameterization for mesoscale models: The Kain-Fritsch scheme. The representation of cumulus convection in numerical models. Eds., K. A. Emanuel and D. J. Raymond. Am. Meteorol. Soc., 246 pp.
Kang, 2011: Retrieval of land surface boundary conditions using satellite data and their impacts on the shortrange weather forecast of Unified Model. Ph. D thesis. Kongju National University, 183 pp.
Kim, Y., K. Sartelet, J.-C. Raut, and P. Chazatte, 2013: Evaluation of the Weather Research and Forecast/ Urban model over Greater Paris. Bound.-Layer Meteorol., 149, 105-132.
Kain, J. S., and J. M. Fritsch, 1993: Convective parameterization for mesoscale models: The Kain-Fritsch scheme. The representation of cumulus convection in numerical models. Eds., K. A. Emanuel and D. J. Raymond. Am. Meteorol. Soc., 246 pp.
Kang, 2011: Retrieval of land surface boundary conditions using satellite data and their impacts on the shortrange weather forecast of Unified Model. Ph. D thesis. Kongju National University, 183 pp.
Kim, Y., K. Sartelet, J.-C. Raut, and P. Chazatte, 2013: Evaluation of the Weather Research and Forecast/ Urban model over Greater Paris. Bound.-Layer Meteorol., 149, 105-132.
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UCI(KEPA) : I410-ECN-0101-2016-453-002764061