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| 安徽省夏季降水区域特征 | |
| 引用本文： | 陈健,杜晓宾,方茸,翟振芳,邓斌.安徽省夏季降水区域特征[J].气象科技,2012,40(5):794-798. |
| 作者姓名： | 陈健 杜晓宾 方茸 翟振芳 邓斌 |
| 作者单位： | 1. 南京大学大气科学学院,南京210093;安徽省合肥市气象局,合肥230041 2. 河南省气象局,郑州,450003 3. 安徽省合肥市气象局,合肥,230041 |
| 摘 要： | 用R型因子分析的方法对1957-2000年安徽省16个测站的夏季降水资料进行研究,应用因子荷载点聚图将观测站点进行区域划分,找出每个区域内的代表观测站,统计各分区夏季降水特征、夏季降水长期趋势变化、区域旱涝特征及年代际变化.结果表明:安徽省夏季降水可以划分为3个区.其中砀山、滁州和宁国可以分别作为它们的标准站.研究指出,40多年3个区的夏季降水特征差别较大:1区夏季降水量最少,2区居中,3区最多,其中6月3个区差别最明显；1区、2区夏季降水量长期趋势变化不明显,而3区表现为明显的正趋势变化；2区是降水异常的多发区,更容易发生干旱与洪涝；1区中在1957-1970年和1991-2000年旱涝较频繁,而在2区和3区中,旱、涝频数随时间变化总体趋势是从旱向涝转变的. |
| 关 键 词： | 安徽 R型因子分析 夏季降水 区域特征 |
| 收稿时间： | 2011/4/17 0:00:00 |
| 修稿时间： | 1/4/2012 12:00:00 AM |
Regional Characteristics of Summer Rainfall Variation in Anhui Province |
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| Chen Jian,Du Xiaobin,Fang Rong,Zhai Zhenfang and Deng Bin.Regional Characteristics of Summer Rainfall Variation in Anhui Province[J].Meteorological Science and Technology,2012,40(5):794-798. | |
| Authors: | Chen Jian Du Xiaobin Fang Rong Zhai Zhenfang and Deng Bin |
| Institution: | 1. Institute of Atmospheric Sciences, Nanjing University, Nanjing 210093; 2. Hefei Meteorological Observatory Hefei 230041; 3. Henan Meteorological Observatory, Zhengzhou 450003) |
| Abstract: | The R-style （actor analysis is carried out for the summer rainfall fields of 16 observation station over Anhui Province from 1957 to 2000, by means of the factor load scatter diagram to carry out the division of observation stations to find the representative stations within the region, the summer rainfall statistical characteristics of the region, the long term trend of summer precipitation, the characteristics of regional droughts, and the inter-decadal variation. ~Fhe analysis indicates that the rainfa~ （ieids can be divided into 3 sub-regions, in which Dangshan, Chuzhou and Ningguo can be used as their standard stations respectively. The results indicate that there is great difference in the characteristics of summer rainfall among the three regions for more than four decades. The summer rainfall in Zone 1 was the least, and that in Zone 3 was the greatest; there is most obvious difference between three zones in June; the long-term trends of summer precipitation in Zone 1 and Zone 2 were not sign~（ieant, but that in Zone 3 was very obvious. There were frequent droughts in Zone 1 from 1957 to 1970 and 1991 to 2000. The overall trends of the drought/flood occurrence frequencies in Zone 2 and Zone 3 varied over time, changing from droughts to floods. |
| Keywords: | Anhui Province R-style factor analysis summer rainfall regional characteristic |
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