Abstract: The possible climate changes for three emission scenarios (SRES A2, A1B, B1) were projected by ECHAM5/ MPI-OM. Based on the projected data, possible temperature and precipitation changes during 2001-2050 in the Yangtze River basin were analyzed. The results show that, temperature would rise mostly in July and August for the whole basin, and precipitation in July would have an increasing tendency while a decreasing tendency in August. Based on the results, temporal distribution of summer precipitation would be more concentrated, which maybe aggravate both flood and drought disasters in the future.

Key words: climate warming, the Yangtze River basin, projection