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通过探讨Ｚ－Ｉ关系气候统计概率配对法和气候统计长沙雷达２００ｋｍ范围内４～６月汛期降水的Ｚ－Ｉ关系，得出该区汛期降水是基本类似的，Ｚ－Ｉ关系可用于该时空区域。将Ｚ－Ｉ关系和ＡＴｉ方法结合，进一步提高了单部雷达测量区域降水量的精度。这种方法不依赖地面自动雨量站网，增加了其实用价值。
Z-I relationship between precipitation and precipitation in the flood season from April to June within 200km of Changsha Statistical Institute of Tropical Meteorology is analyzed. The results show that precipitation in flood season in this area is basically similar, and the Z-I relation can be used in this space-time area. Combining the Z-I relationship with the ATi method further improves the accuracy of precipitation in a single radar measurement area. This method does not rely on the ground automatic rainfall network, an increase of its practical value.