摘要
利用NCEP/NCAR提供的水平分辨率为1°×1°的格点资料和WRF模式对2011年8月发生在青藏高原的一次短时强降水进行了数值模拟,并利用模式输出的高分辨率资料对此次降水进行诊断分析。结果表明,WRF模式能够较好地模拟此次高原强降水,较成功地再现了造成降水的系统;降水发生前,35°N附近低层大气有一条东西走向的强气流辐合带生成并东移扩张,这条辐合带在17日16:00开始影响降水中心,使得降水中心低层出现短时的强辐合运动,加上充沛的水汽供应,导致短时强降水的爆发。
A short term heavy rain was investigated based on NCEP/NCAR 1°× 1 °reanalysis data and high resolution output data provided by WRF（ Weather Research and Forecasting） Model, which occurred in Tibetan Plateau on August, 2011. The results showed that WRF model can simulate the heavy precipitation and indicate the systems successfully. Before the precipitation, a east-west trending convergence zone of strong airflow generates and expands eastward on the low layer near 35°N and the convergence zone begin to influence precipitation center at 16：00. In the situations the convergence occurs in low level of precipitation center and abundant moisture supply, the outbreak of short term heavy rainfall arises.
出处
《安徽农业科学》
CAS
2014年第4期1109-1113,1161,共6页
Journal of Anhui Agricultural Sciences
基金
国家重点基础研究发展项目规划"973"(2013CB430103)
国家自然科学基金(41375058)
