7 Li C Y, Pan J. Atmospheric circulation characteristics associated with the onset of Asian summer monsoon. Adv Atmos Sci, 2006, 23:925-939？？
[4]
8 Schiemann R, Luthi D, Schar C. Seasonality and interannual variability of the westerly jet in the Tibetan Plateau region. J Clim, 2009, 22:2940-2957？？
[5]
9 Ludecke C, Kuhle M. Comparison of meteorological observations at Mt Everest and K2: Examples of the 1984 and 1986 expedition. MeteorolAtmos Phys, 1991, 47: 55-60
[6]
10 Aizen V B, Aizen E M, Nikitin S A. Glacier regime on the northern slope of the Himalaya (Xixibangma glaciers). Quat Int, 2002, 97-98:27-39
[7]
11 Pratap S, Haritashya U K, Ramasastri K S, et al. Prevailing weather conditions during summer seasons around Gangotri Glacier. Curr SciIndia, 2005, 88: 753-760
[8]
13 Bonasoni P, Laj P, Angelini F, et al. The ABC-Pyramid Atmospheric Research Observatory in Himalaya for aerosol, ozone and halocarbonmeasurements. Sci Tot Environ, 2008, 391: 252-261？？
[9]
14 Xie A H, Qin D H, Ren J W, et al. Meteorological observations on Mount Everest in 2005. Prog Nat Sci, 2007, 17: 828-837？？
20 Simmons A, Uppala S, Dee D, et al. ERA-Interim: New ECMWF reanalysis products from 1989 onwards. ECMWF Newslett, 2007, 110:25-35
[12]
1 Bollasina M, Bertolani L, Tartari G. Meteorological observations at high altitude in the Khumbu Valley, Nepal Himalayas, 1994-1999.Bull Glaciol Res, 2002, 19: 1-12
[13]
2 Shrestha M L. Interannual variation of summer monsoon rainfall over Nepal and its relation to Southern Oscillation Index. Meteorol AtmosPhys, 2000, 75: 21-28？？
[14]
3 Lang T J, Barros A P. An investigation of the onsets of the 1999 and 2000 monsoons in central Nepal. Mon Weather Rev, 2002, 130:1299-1316？？
[15]
5 Yeh T C. The circulation of t he high troposphere over China in the winter of 1945-1946. Tellus, 1950, 2: 173-183？？
[16]
12 Singh P, Haritashya U K, Kumar N. Meteorological study for Gangotri Glacier and its comparison with other high altitude meteorologicalstations in central Himalayan region. Nord Hydrol, 2007, 38: 59-77？？
[17]
15 Moore G W K, Semple J L. High Himalayan meteorology: Weather at the south col of Mount Everest. Geophys Res Lett, 2004, 31:L18029, doi:10.1029/2004GL020621
19 You Q L, Kang S C, Pepin N, et al. Relationship between temperature trend magnitude, elevation and mean temperature in the TibetanPlateau from homogenized surface stations and reanalysis data. Glob Planet Change, 2010, 71: 124-133？？
