What's the climate like in Shannan area of Tibet?

Shannan region is a typical valley in southern Tibet, with gradually decreasing topography from west to east, mild climate, beautiful scenery, rich resources, suitable for agriculture, animal husbandry and forests, and is known as the "granary of Tibet". Rich in naked grass, wheat, broad beans, peas, corn, wheat, rape and other crops, it is one of the main grain and oil producing areas in Tibet. In recent years, the whole region has intensified the adjustment of planting structure and developed vegetable and walnut planting. Shannan region is located in the south of Gangdise Mountain to Nyainqentanglha Mountain, in the middle and lower reaches of the main stream of Yarlung Zangbo River, bordering Lhasa, the capital of Tibet in the north, Shigatse in the west, Linzhi in the east and India and Bhutan in the south. Due to the high terrain and complex terrain, most of Shannan region has become a semi-arid plateau monsoon climate with a transition from temperate zone to sub-frigid zone. The main characteristics of the climate are: strong solar radiation and long sunshine time; Less precipitation, more than half a year in summer, uneven distribution; Low temperature, long winter and short summer, four distinct seasons; The daily temperature difference is large, the annual temperature difference is small, the frost-free period is short, and there are many disasters such as drought, blizzard, hail and strong wind.