Extended Abstract

Table 2 the coefficients of the formula at polarimetric parametersFormula a b Correlation coefficientbI = aZ H0.03925 0.4032 0.78bI = aZ H (TWA) 0.01864 0.5546 0.914bI = aK DP5.515 0.766 0.865bI = aK DP(TWA) 11.04 0.7908 0.945101099887766雷 达 反 演 降 水 量 (543mm/h)雷 达 反 演 降 水 量 (543mm/h)221100 2 4 6 8 10实 测 降 水 量 (mm/h)00 2 4 6 8 10实 测 降 水 量 (mm/h)Fig.3 (a)Fig.3 (b)109871098766雷 达 反 演 降 水 量 (543mm/h)雷 达 反 演 降 水 量 (543mm/h)221100 2 4 6 8 10实 测 降 水 量 (mm/h)00 2 4 6 8 10实 测 降 水 量 (mm/h)Fig.3 (c)Fig.3 (d)Fig.3 Comparisons between the rain rate retrieved by variables of Z H and K DP , and the rain rateobserved by rain-gauges. (a) is the rain rate retrieved before the Z H initial field; (b) is the rain rateretrieved after the Z H initial field; (c) is the rain rate retrieved before the K DP initial field; (d) isthe rain rate retrieved after the K DP initial field.Comparing (a) w ith (b), t he discrete points ar e more assembling after co rrected b y T WAmethod, a nd the co rrelation coefficient of ( b) i s better than ( a). (c) and (d) a re with t he s amefeature. Meanwhile, Comparing (b) with (d), we find that the rain rate retrieved by Z H is moreconsistency when the rain rate is lignter than 4 mm/h, while the rain rate retrieved by K DP is morecoherent when the rain rate is heavier than 5 mm/h.-148-