利用 Ｇ Ａ Ｍ Ｅ Ｔｉｂｅｔ加强观测期间 （１９９８ 年 ５～９ 月） Ｄ１０５ 站的降水资料， 初步分析了青藏高原唐古拉山北坡夏季风降水的特征表明从６ 月 ７ 日至 ９ 月１８ 日， 这 １０４ ｄ 中有 ８１ ｄ 产生降水， 总降水量为２７９２ ｍ ｍ ， 每天平均降水量达３４５ ｍ ｍ 可以认为６ 月７ 日左右为唐古拉山北坡 Ｄ１０５ 站处夏季风爆发日 ８ 月份降水量最大， 为１２１６ ｍ ｍ ， 占观测期间总降水量的４３６％ 在夏季风期间， 季风降水存在着明显的活跃期和中断期， 其主周期约为 ５ ｄ局地对流云降水不论从降水量还是降水频率上， 对 Ｄ１０５站处夏季风降水都有较大的贡献 Using G A M E-Tibet to strengthen the precipitation data of D105 during the observation period (May-September 1998), the characteristics of summer monsoon rainfall on the northern slope of Tanggula Mountain in the Qinghai-Tibet Plateau are analyzed. From June 7 to September 18 , 81 days after 104 days of precipitation, the total precipitation is 2792 m m and the average daily precipitation is 345 m m It can be considered that the summer monsoon at D105 on the northern slope of Tanggula Mountain is around June 7 The precipitation in August was the largest at 1216 m m, accounting for 436% of the total precipitation during the observation period. During the summer monsoon period, the monsoon precipitation showed obvious active period and interruption period with the main period of about 5 d. Local convective cloud precipitation has a greater contribution to summer monsoon rainfall at station D105, both from precipitation and precipitation frequency