Japan Geoscience Union Meeting 2014
Apr 28 - May 2, 2014Pacifico Yokohama
Japan Geoscience Union Meeting 2014
Apr 28 - May 2, 2014Pacifico Yokohama
[AAS01-14]Statistical Analysis of Large Drop Occurrence and Its Effect on Drop Size Distribution
*Sung-a JUNG1, Masayuki MAKI2, Dong-in LEE1, Ji-hyeon KIM3, Shyuichi TSUCHIYA4(1.Pukyong National University, Korea, 2.Kagoshima University, Japan, 3.Weather Radar Center, Korea, 4.National Institute for Land and Infrastructure Management, Japan)
Keywords:
large drop,DSD,2DVD
A large data set of raindrop size distribution (DSD) measured by 2-Dimensional Video Distrometer (2DVD) on 12 locations in Japan is analyzed using the truncated modified gamma DSD model and the normalized gamma DSD model. The present study seeks to: 1) explore the general properties of DSD observed at Kanto, Hokuriku, Nagoya, Kinki and Kyushu in Japan; 2) find the governing parameters of DSD models in different geographycal and seasonal regime; 3) statistics of big drops occurrence and instrinsic shape of the DSD with extremely large drops; 4) find relationships between DSD parameters such as the shape and slope parameters, the generalized intercept parameter and volume-weighted mean diameter, and etc. The present study on stratistical analysis of DSD provide us information which is nesessary to understand big drop microphysics and precipitation.