抄録
The raindrop size distribution (DSD) was measured with electro mechanical disdrometers. The measurements discussed here contain around 10, 000 distributions, each registered as 5 minute mean. Different types of precipitation at different locations have been used from the period of 1988-1990.The dependence of the DSDs on rainfall intensity was analyzed and the Z-R relation was estimated using DSD parameters and various regression method. Results indicate DSD derived Z-R relation is not always better than regression methods, and the estimated DSD parameters were different between DSD derived ones and Z-R derived ones. One of the Z-R regression method, quasi-least-square method, was applied to the on-line calibration of Z-R parameters, and the capability was pointed out.
