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http://dx.doi.org/10.5467/JKESS.2014.35.7.518

A Study on a Model of Rainfall Drop-Size Distribution over Daegwanryeong Mountainous Area Using PARSIVEL Observations  

Park, Rae-Seol (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
Jang, Min (Weatherlink)
Oh, Sung Nam (ReSEAT Program, Korean Institute of Science and Technology Information)
Hong, Yun-Ki (Agency for Defense Development)
Publication Information
Journal of the Korean earth science society / v.35, no.7, 2014 , pp. 518-528 More about this Journal
Abstract
In this study, a model of rainfall drop-size distribution was modified using PARSIVEL-retrieved rainfall drop-size distribution over Daegwanryeong mountainous area. A prototype model (Modified ${\Gamma}$ distribution model) applicable for this area was decided through the comparative analysis between results from models proposed by preceding research and PARSIVEL-retrieved data over Daegwanryeong mountainous area. In order to apply the prototype model for Daegwanryeong region, the parameters (${\alpha}$, A, B) were made via sensitivity experiments and models of the rainfall drop-size distributions for five cases of rainfall rate were proposed. Results from the proposed five models showed high correlations with PARSIVEL-retrieved data ($R^2=0.975$). In order to suggest a generalized form of rainfall drop-size distribution, interaction equations between rainfall rates and parameters (${\alpha}$, A, B) were investigated. The generalized model of the rainfall drop-size distribution was highly correlated with PARSIVEL-retrieved data ($R^2=0.953$), which means that the proposed model from this study was effective for simulating the rainfall drop-size distribution over Daegwanryeong region. However, the proposed model was optimized for rainfall drop-size distribution over Daegwanryeong region. Therefore, broad observations of other regions are necessary in order to develop the representative model of the Korean peninsula.
Keywords
numerical model for rainfall drop-size distribution; PARSIVEL disdrometer; prototype model; modified ${\Gamma}$ distribution model; parameter;
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Times Cited By KSCI : 6  (Citation Analysis)
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