不同基流中繁殖模饱和特征对比分析  

Comparison analysis of bred modes' saturation characteristics in different basic flow

作　　者：关吉平[1] 张立凤[1] 张铭[1] 

机构地区：[1]解放军理工大学气象学院,江苏南京211101

出　　处：《解放军理工大学学报（自然科学版）》2010年第6期681-686,共6页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(40975031);解放军理工大学气象学院博士启动基金资助项目;解放军理工大学气象学院基础理论研究基金资助项目

摘　　要：为了研究不同基流背景下繁殖模的饱和特征,采用增长率和图形相关系数2个指标对不同基流计算的繁殖模进行了对比分析。结果表明:经过大约3 d的繁殖,不同基流计算的繁殖模都达到了饱和,但用NCEP再分析资料计算的繁殖模比用T 106资料计算的繁殖模的饱和级别高些;相对湿度繁殖模比其它变量的繁殖模具有较低的饱和级别,且低层比高中层更容易饱和;对于饱和后同时刻的2种繁殖模,其在结构上非常相似的同时,也存在一些不同。To study the saturation characteristics of bred modes in different basic flows,comparative analysis was made using two parameters： growing rate and pattern relation coefficient.The result shows that after about 3 days＇ breeding cycles,both kinds of bred modes computed with different analysis data are saturated.In comparison with the bred modes computed with T106 data,those computed with NCEP reanalysis data are of higher saturation level.The relative humidity bred modes have lower saturation level than those of other variables and the bred modes at lower levels reach saturation more easily than those at higher levels.For the two kinds of bred modes at the same time after saturation,their structures are very similar in spite of some differences.

关 键 词：增长模繁殖法 集合预报 饱和 对比分析 

分 类 号：P456[天文地球—大气科学及气象学]