From 2 to 14 June 1980 the authors participated in an excursion by jeepacross Tibet, following the road from Lhosa via Gyangze, Xigaze, Tingri, and Nyalam to Zham on the Nepal border. The excursion was organized by the Academia Sinica, with direct support by Vice-Chairman and Vice-Premier Deng Xiaoping and Vice-Premier Feng Yi, and relied on the excellent logistic support of the Chinese People's Liberation Army. This report gives an account of impressions, including those of local and regional meteorological and climatological problems.