大气科学2011，Vol.35Issue(6)：1145-1158,14.
TRMM卫星的闪电观测资料在中尺度数值模式中的Nudging同化应用研究
Application of Lightning Observations of TRMM Satellite to the Mesoscale Numerical Model by a New Nudging Assimilation Adjustment Technique
摘要
Abstract
A new nudging assimilation adjustment technique is proposed, which may be used to assimilate the lightning observations of TRMM satellite into the initial fields of the mesoscale numerical model. The technique combines the physical initialization technology with the nudging technology. According to the observed lightning intensity and spatial location, the assimilation technique adjusts the content and spatial distribution of water vapor and five cloud hydrometeors in the initial fields of the numerical model, and thereby improves the initial condition of model and increases the accuracy of 0 - 6-hour short-term rainfall forecast of the mesoscale numerical modeL The nudging assimilation adjustment technique is further used to assimilate the lightning observations of TRMM satellite into the initial conditions of three short-term precipitation events simulated by the ARPS modeL The results show that, the assimilation of observational lightning data may increase water vapor and cloud hydrometeors in the initial condition and reasonably rearrange the spatial distribution of water substances. The short-term forecast of precipitation and cloudhydrometeors by the mesoscale numerical model is effectively enhanced.关键词
Nudging同化/TRMM卫星/闪电观测/云凝结物Key words
Nudging assimilation, TRMM satellite, lightning observation, cloud hydrometeors分类
天文与地球科学引用本文复制引用
冉令坤,周玉淑..TRMM卫星的闪电观测资料在中尺度数值模式中的Nudging同化应用研究[J].大气科学,2011,35(6):1145-1158,14.基金项目
中国科学院知识创新工程重要方向项目KZCX2-YW-206,国家自然科学基金资助项目40875032、40875002、41075098,中国科学院大气物理研究所领域前沿项目IAP07201 （）
