To answer this question, we must first understand why Lhasa is called the city of sunshine. Lhasa enjoys abundant sunshine all year round, with sunshine duration exceeding 3,000 hours, which is 1800 hours more than Chengdu, Sichuan, and10/00 hours more than Shanghai. The average daily sunshine is 8 hours 15 minutes, which is almost half of that in the eastern part of the same latitude and twice that in the Sichuan basin. Therefore, Lhasa is called "Sunshine City" or "Sunshine City".
Lhasa is 3658 meters above sea level. The atmosphere is thin, the air density is thin, the water vapor content is low, the air is not as dusty as the northwest region, and the atmospheric transparency is very good. So the absorption and scattering of sunlight in the atmosphere is very small. Due to the thin atmosphere, the blue light scattered by air molecules is greatly weakened, and the dark blue or blue sky sets off a more dazzling sun. Therefore, when you look up at the sky in Lhasa, it will always be so blue and the sunshine will always be so dazzling, giving people infinite longing and hope.
Friends should pay special attention to sun protection if they travel to Lhasa, Tibet. Also keep warm, because the temperature in Tibet is very low in the morning and at night. Strong sunlight and ultraviolet rays on the plateau can hurt your eyes. Don't forget to prepare a sun hat and sunglasses. Because of the dry climate, some tourists are prone to nosebleeds or dry lips, so be sure to bring sunscreen, moisturizing lotion and lip balm.