摘要
根据 1 95 8～ 1 996年黑龙江省 38个代表站历年降水量资料和同期北半球 2 .5°× 2 .5°格点 5 0 0 h Pa位势高度资料 ,分别求出了干旱和洪涝年份 7、8月的流型 ,指出东北北部盛夏旱涝的形成与东亚由冬至夏的季节转换联系密切。用北半球正压模式实施 4组积分时间为 30个模式日的数值试验 ,成功地模拟了 7、8月干旱和洪涝流型的形成和持续过程 。
Based on 1958~1996 rainfall over 38 stations in Heilongjiang province and 2.5°×2.5° geopotential height at 500 hPa data,the flow patterns in July,August are revealed for flood and drought years with the close relation discovered between the formation of summer flood/drought in Heilongjiang and the seasonal conversion of circulation in east Asia from winter to summer.Four group experiments with the integration of 10 days are carried out by using a barotropic model,which simulate successfully the formation and maintenance of the flow patterns of flood/drought in July,August.The features are also investigated of the heat source forcing relative to the flow patterns of flood/drought.
出处
《南京气象学院学报》
CSCD
北大核心
2001年第1期127-136,共10页
Journal of Nanjing Institute of Meteorology
基金
黑龙江省自然科学基金项目"黑龙江作物生长季旱涝形成机制研究"资助
