摘要
利用VAP方法,利用舟山新一代天气雷达基数据资料,对2008年7月2日和2009年6月20日二次过程进行风场反演,结合新一代天气雷达反射率因子资料,从风场动力结构剖析强对流天气入海后变化的主要原因,掌握强对流天气入海后的发展加强和减弱消散的趋势性变化,提高强对流天气预报准确率。进一步的利用浙江省自动测风站网资料和反演风场资料进行对比分析,结果表明:反演风场的风向基本和事实相符;风速和实测资料的风速存在差异,并指出了产生误差的主要原因。
Based on a new generation of weather radar base data at Zhoushan,the wind field on July 2,2008 and June 20,2009 are retrived by VAP method.To study the trend change of the severe convection into the sea from developing or strengthening to dissipating or weakenin and to improve the accuracy of the severe convec-tion weather forecast,the change of the severe convection into the sea through the wind field dynamics structure is analyzed.With the comparison between the data from Zhejiang Auto Wind Monitor Station Network and the wind field data retrived from the satellite data,it shows that the wind direction retrieved agrees well with the ob-served data while the wind speed has some discrepancy.The main reason of the discrepancy is analyzed.
出处
《海洋预报》
2011年第6期40-45,共6页
Marine Forecasts
关键词
VAP方法
风场反演
强对流
风向切变线
VAP method
wind field retrieval
severe convection
wind direction shear line
