Preface The thermal structure and the convective activity over QinghaiTibetan Plateau in summer and thcir interacfion s with largescale circulation Ye Duzheng Interannual variability of Meiyu rainfalls Tao Shiyan,Zhu Wenmei,Zhao Wei Numerical sinlulation of mon soon and the abrupt changes in the atmospheric circulation Zeng Qingcun,Liang Xinzhong,Zhang Minhua Some dynamical processes of the generalci rculation over East Asia Zhu Baozhen A heavy rainfall numerical prediCtion model for theEast Asian mon soon area Zhou Xiaopiong,Zhao Sixiong,Zhang Kesu et al. Long-pange numerical forecasting and large scale air-sea interaction Chao Jiping,Wang Lizhi,Wang Xiaoxi et al. Moist and dry Eliassen- Palm cross-sections in different wave-number bands and residual circulation WuGuoxiong,Chen Biao,Wu Zhengxian Influence of heat source anomaly over the Western tropical Pacific on the subtropical high over East Asia and its physical mechanism Huang Ronghui,Li Weijing An experiment on the effects of topography and stationary heat source for the proce ss of index cycle in general circulation Xu Youfeng An important causative factor of El Nino event-frequent activities of the stronger cold wares in East Asia Li Chongyin,Chen Yuxiang,Yuan Chongquang Climate anomalies in China associated with El Nino/Southern Oscillation Fu Congbin,Teng Xinglin Zonal anomaly of sea su rface tempe rature in the tropical IndoPacific Ocean and its effect on su mmer Asia mon soon Chen Lieting A computational design of numerical world general circulation model Zhang Xuehong,Zeng Qingcun The construction of difference schemes of evolution equation s and the numerical simulation of offshore currents Zeng Qingcun,Ji Zhongzhen,Li Rongfeng Stationary waves in a three-layer quasi geostrophic model and mechanism for the formation,maintenance and evolution of poiar volex in the stratosphere Ku# Weidong,Ji Liren Energetics of cyclogenesis on Meiyu(Baiu)front Zhao Sixiong A possible triggcring mechanism for heavy rainfall on Meiyu front Liu Jian,Zhang Kesu The advances for research on atmospheric boundary layer physics Hong Zhongxiang,Zhang Xifu,Lei Xiaoen et al. The physical and chem ical characteristics of the atmospheric aerosol in Chongqing area and their effect on the formation of acid rain Ren Lixin,Wang Mingxing,Wu Hong et al. A numerical simulation of the acidification proces s of rain water below the cloud and the mechanism of acid rain formation in Chongqing area Liu Shuairen,Huang Meiyuan A study of inversion algorithm for determining almospheric aerosol profile from simulated spacc-borne Lidar signals Qiu Jinhuan,Lu Daren The progress of the ground remote sensing reseach for the atmospheric Ozone in China and its significance on the general atmospheric remote sensing Wei Dingwen Differential reflectivity characleristics in ice-phase precipitation Liu Jinli A study of the long-term variation of stratospheric aerosols by a spherically-layered atmospheric radiation transfer model Wu Beiying,Lu Daren Characteristics of large natural hailstones and the studies of artificial hailstones Wang Angsheng Potentialities of Raman scattering method for delection of water vapour concentration in the atmosphere Wang Gengchen Parameterization model of radiation tran sfe rin clear atmospheres Zhao Gaoxiang,Wang Hongqi Chemical composition of rainwater in the Tropical West Pacific area Shen Zhilai,Huang Meiyuan,Wu Yuxia Simultaneous measurements of RVR and SVR and cloud height by Lidar QiuJinhuan,Huang Qirong,Zheng Siping et al. Technology of balloon for upper air sciences Jing Qiyi