摘要
用1881—1987年长江宜昌站月平均流量资料,研究长江上游汛期径流长期变化特征,讨论其与太阳活动、厄尔尼诺事件的关系,并用1951—1987年资料,研究径流丰、枯年份汛期500百帕、100百帕环流的差异,计算分析宜昌站7—9月平均流量与前期环流和海温场的相关联系。所发现的若干有意义的事实,可供汛期流量长期展望参考。
Based on the stream flow records from 1881 to 1987 at Yichang station of Yantze river, some features of long-term fluctuations of runoff in main flood period (July to September) are investigated. The relationships between stream flow and both the solar activity and Elnino are examined. The differences of 500 bPa and 100 hPa circulation in flood period between years of abundant and deficient runoff, tie correlations between main flood period mean stream flow at Yichang station and both the atmospheric circulation on 500 hPa level and sea surface temperature field in former stages are analysed by using the data from 1951 to 1987. The results obtained in this paper may be provided for long-range outlook of flood period stream flow as a reference.
出处
《气象科学》
CSCD
北大核心
1992年第2期230-238,共9页
Journal of the Meteorological Sciences
