| 我国东北地区降水空间分布及干湿驰豫时间的研究 |
| |
| 引用本文： | 刘会玉,张明阳,林振山.我国东北地区降水空间分布及干湿驰豫时间的研究[J].南京气象学院学报,2004,27(1):97-105. |
| |
| 作者姓名： | 刘会玉 张明阳 林振山 |
| |
| 作者单位： | 南京师范大学,地理科学学院,江苏,南京,210097 |
| |
| 基金项目： | 国家自然科学基金资助项目(40371108),国家"十五"211重点学科建设项目 |
| |
| 摘 要： | 根据东北地区24个典型测站1951—2001年的降水量资料,利用EOF方法分析了我国东北地区的降水空间分布;同时,通过子波诊断技术结合突变点数建模技术,研究了我国东北地区的降水演变周期特征,并对干湿态之间转换的驰豫时间做了定量的研究。结果表明：东北地区的降水空间分布具有整体一致的性质,同时还存在南北及东西的差异;大部分站点都具有干→湿的驰豫时间长于湿→干的驰豫时间的特征,体现了东北地区容易维持干旱状态的特性。
|
| 关 键 词： | 降水 空间分布 驰豫时间 东北地区 |
| 文章编号： | 1000-2022(2004)01-0097-09 |
Spatial Patterns of Precipitation and Dry-Wet Transition Time in Northeast China |
| |
| LIU Hui-yu,ZHANG Ming-yang,LIN Zhen-shan.Spatial Patterns of Precipitation and Dry-Wet Transition Time in Northeast China[J].Journal of Nanjing Institute of Meteorology,2004,27(1):97-105. |
| |
| Authors: | LIU Hui-yu ZHANG Ming-yang LIN Zhen-shan |
| |
| Abstract: | Some spatial patterns of precipitation have been studied,the catastrophic points modeling technique has been adopted to study the characteristics of precipitation evolution in Northeast China,and the dry-wet transition times have been computed.Results show that 1)the most typical pattern of precipitation has the dry-wet consistency in all regions,while the other typical patterns show the dry-wet difference between the south and north parts or between east and west parts of the region;2)the new modeling technique is stable to obtain the characteristics of precipitation evolution;3)for most areas and stations in Northeast China,the dry-to-wet transition time is longer than the wet-to-dry transition time,indicating that Northeast China is susceptible to drought. |
| |
| Keywords: | Northeast China precipitation spatial pattern dry-wet transition time |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
