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| 基于江淮分水岭地区的Z指数修正 | |
| 引用本文： | 方茸,周后福,屈雅.基于江淮分水岭地区的Z指数修正[J].气象,2010,36(10):110-113. |
| 作者姓名： | 方茸 周后福 屈雅 |
| 作者单位： | 1. 安徽合肥市气象局,合肥,230031 2. 安徽省气象科学研究所,合肥,230031 3. 中国气象局公共气象服务中心,北京,100081 |
| 基金项目： | 合肥市2007年度重点科研项目“基于SVD的合肥地区汛期旱涝气候预测研究应用”资助 |
| 摘 要： | 利用安徽江淮分水岭地区的合肥、六安、巢湖3个代表站1957—2008年汛期5—9月降水量资料,计算成相应的Z指数,在用Z指数作为旱涝分级指标过程中,发现Z指数理论界限值并不符合江淮分水岭地区的实际情况,因此必须对此进行修改和订正。以微调和旱涝年份数量大体对等为原则进行修正,修正后的7级和5级Z指数界限值较好地反映出江淮分水岭地区实际旱涝,因此修正后的Z指数可以应用到安徽江淮分水岭地区汛期旱涝等级划分中。 |
| 关 键 词： | 汛期旱涝 Z指数 指数修正 江淮分水岭 |
| 收稿时间： | 2008/10/17 0:00:00 |
| 修稿时间： | 2009/10/22 0:00:00 |
Adjustment of Z-Index Based on Jianghuai Watershed Area |
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| FANG Rong,ZHOU Houfu and QU Ya.Adjustment of Z-Index Based on Jianghuai Watershed Area[J].Meteorological Monthly,2010,36(10):110-113. | |
| Authors: | FANG Rong ZHOU Houfu and QU Ya |
| Abstract: | With the flood season precipitation data at 3 sampling meteorological stations in Jianghuai Watershed area of Anhui Province from 1957 to 2008, the Z-index method was applied to judge the flood/drought grades in Jianghuai Watershed area, and it is found that the theoretical Z-index is not suited to Jianghuai Watershed area. In this case the theoretical boundary of Z-index should be adjusted, and there are two principles of adjustment: the first is slightly adjustment, and the second is that years of drought and flood are nearly equal. The new boundaries of Z-index for the grades of flood/drought are more suitable for the Jianghuai Watershed area. Therefore the modified Z-index can be well applied to Jianghuai Watershed area. |
| Keywords: | flood/drought of flood season Z-index index adjustment Jianghuai Watershed area |
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