【摘要】 针对目前中尺度数值模式MM5所用初始场局限于NCEP和T213的现状,提出了应用日本数值预报产品(JMA,下同)格点资料做初始场的想法,并对试验过程进行了介绍。对台风Ranan im(0414)登陆浙江的路径、移速、强度和降水等方面的数值模拟结果表明,应用了JMA资料的MM5模式在原有基础上提高了预报精度,尤其在台风登陆时间和登陆地点上提高更为明显。更多还原

【Abstract】 Focusing on the present situation of initial fields limited in NCEP and T213 data in using mesoscale model(MM5),a new thought of using JMA numerical weather prediction product in MM5 model is detailed introduced in this paper.With JMA initial field,a numerical experiment is conducted on the landfall typhoon Rananim,verified against observations.The track,the moving speed,intensity change and precipitation distributions are well reproduced and the accuracy is certainly improved base on JMA data,particularly on the landfall time and landfall dot.更多还原