摘要
用１９５１—１９９０年降水量资料，计算了我国华北东部地区的Ｚ指数级别值，并分析该地区内干旱发生的气候规律。结果表明，该区干旱发生频繁且严重，有明显的季节和持续性特点。
The characteritics of drought in the east of north China have been analyzed statistically with Z index by using the precipitation data from 1951 to 1990.The results show that drought occured frequently and severely in this area.The characteritics of drought are identified as seasonality and persistence,and quasi 20 years oscillation variation.
出处
《气象》
CSCD
北大核心
1996年第11期37-40,共4页
Meteorological Monthly
