摘要
采用同时调整热力学和动力学变量,并考虑湿度与温度的变化相协调的初始化方法,引进雷达资料改善MM5模式的初始场。试验结果表明:经过优化处理的初始场,显著提高了模式对降水特别是甚短时(0～6h)降水的落区和量的预报准确率。其中调整热力学变量对改进降水落区预报比动力学变量的调整更为重要。
The initial fields of MM5 are improved in this paper by adopting an initialization scheme of simultaneously adjusting thermodynamic and dynamic variables and coordinating humidity and temperature changes,and by assimilating RZ data into the initial field.Experimental results show that the improved initialization of MM5 can raise the forecast accuracy of precipitation location and rainfall,expecially of 0～6h,and the thermodynamic variable adjustment is more important than the dynamic variable adjustment in improving the forecast of precipitation location.
出处
《南京气象学院学报》
CSCD
北大核心
2003年第5期661-667,共7页
Journal of Nanjing Institute of Meteorology
基金
国家攀登项目(9503)
