摘要
T213 L31模式(简称T213)是中国国家气象中心在T106L19谱模式的基础上建成的第四代全球中期数值天气预报系统,它于2002年9月1日起投入业务使用。本文根据世界气象组织(WMO)基本系统委员会(CBS)1985年特别会议推荐的数值预报标准化检验方案,采用欧洲中期数值预报模式ECWMF和国家气象中心T213数值预报模式的500 hPa位势高度、850 hPa温度预报格点资料和客观分析实况格点资料,对东亚区域2002年和2003年夏季时段内两种模式的预报能力进行对比分析检验。所得结果表明,ECWMF预报的环流场中的低压槽在102°E以东的我国中东部(102°E以西的我国西部)比实况值偏弱(偏强),高压脊偏强(偏弱);而在我国的大多数地区,T213模式预报的低压槽偏强,高压脊偏弱。
213L31 model is the forth generation global medium range numerical weather prediction system of the National Meteorological Center on basis of the spectral model T106L19. It became an operational system on September 1,2002. According to numerical forecast standardizing verified scheme that the commission for basic system(CBS) of World Meteorological Organization(WMO) recommended in a special meeting in 1985,based on grid data of forecasting fields (500hPa potential height, 850hPa temperature) of ECMWF model and T213 model and real-time objective analysis fields, prediction natures of the two models in Asia during 2002 summer and 2003 summer are comparatively analyzed and verified. The result shows that the low trough of ECMWF forecasting circulation is weaker(stronger) than the real-time one in middle and east Cl^ina(west China),east(west) from 102°E,the high ridge is stronger(weaker); but the low trough of T213 model forecasting circulation is stronger than the real-time one in most of China,the high ridge is weaker.
出处
《气象科学》
CSCD
北大核心
2007年第3期253-258,共6页
Journal of the Meteorological Sciences
基金
国家重点基础研究发展规划项目(编号:973:2004CB418301)
国家自然科学基金(编号:40333025
40175025)
江苏省自然科学基金项目(编号:BK99020)共同资助