Lhasa, capital of the Tibet Autonomous Region, greeted the first snowfall this winter on Saturday. The snow came later than usual this year, as the city usually has its first snow in late October, said local meteorologists. The light snow improves the air quality of Lhasa, where the air has been extremely dry due to the lack of rainfall, said an official with Tibet Meteorological Bureau. It is predicted that eastern Tibet will also have snow on Saturday and Sunday. The local temperature is expected to fall by eight to ten degrees centigrade after the snow. 