During 1997 summer, fresh snow samples were collected from the high elevation region (5400- 7000 m) of Dasuopu Galcier on the northern slope of Mt. Xixabangma (28° 33'N, 85° 44'E). Compared with other remote regions in the world, major ion concentrations in fresh snow are very low during summer in Mt. Xixabangma, suggesting that the atmosphere is very clean and may represent background value for the middle/upper troposphere in the middle/low latitude area. During summer at Mt. Xixabangma the fresh snow chem...
【基金】
Under the auspices of NKBRSF Project (G1999043400), the Great Project of Chinese Academy of Sciences (KZ951 A1 402 and KZ951
【分类号】
P343.6
【正文快照】
Investigations of atmospheric composition in the Himalayas has been limited in both temporal and spatial scales, mainly due to difficult logistics. Ideal sites for monitoring atmospheric composition and its evolution should be free from local pollution an