摘要
梅雨锋中尺度暴雨是我国长江流域的主要气象灾害,也是1998年长江流域特大洪涝的主要原因。本项目是我国首批启动的国家重大基础研究项目之一。两年来的研究取得明显进展,基本弄清了1998年长江洪涝的成因,并首次提出引发长江流域暴雨的大尺度环流异常的物理模型和机理,以及梅雨锋中尺度暴雨系统的物理模型。同时,在中尺度暴雨系统的先进探测技术和理论研究方面都取得重要进展,尤其是云导风研究已处于国际领先水平。项目的二年研究还全面推进了多种中尺度气象探测资料的融合、集成理论和方法研究,并正在发展新一代高分辨、非静力的中尺度数值模式。
Meso-scale heavy rainfall in the Meiyu front is main meteorological disaster along the Yangtze River as well as main reason causing the seriousflooding of Yangtze River in 1998. This project is one of the national key basic research projects running since 1999. The study progresses in the last two years are remarkable. The causes of the Yangtze River flooding in 1998 were basically clear now and the physical models and formation mechanisms of the large-scale anomalous circulation inducing heavy rainfall and the meso-scale heavy rainfall system in the Meiyu front were preliminarily revealed; the progress has been made with studies of the advanced sounding theories and techniques such as meteorological sattellite and Doppler radar, especially the cloud-drived wind study which keeps ahead internationally; the study for embracing, assimilation and integration of multi-sounding data sets from sattellite, radar and conventional observed network has been advanced in all aspects, especially three dimensional variation assimilation; new generation meso-scale numerical model with high-resolution and non-static has been developing.
出处
《中国基础科学》
2001年第9期4-7,共4页
China Basic Science
