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The Tibetan Plateau (TP) is a key region of land-atmosphere interactions with severe eco-environment degradation.This study uses an atmospheric general circulation model, NCEP GCM/SSiB, to present the major TP summer climate features for selected six ENSO years and preliminarily assess possible impact of land degradation on the summer circulation over the TP.Compared to Reanalysis Ⅱ data, the GCM using satellite derived vegetation properties generally reproduces the main 6-year-mean TP summer circulation features despite some discrepancies in intensity and geographic locations of some climate features.The main features include the high temperature and ascending motion centers at both lower and upper atmosphere; the high geopotential height center and negative vorticity center at upper atmosphere and low geopotential height center and dipole vorticity anomalies at lower atmosphere; and the cross-equatorial monsoon circulation cell and the small circulation cell that ascend at the TP and subside at its north side are all reproduced.The analyses reveal that the plateau acts as a heat source in the summer.