I want to go to Golmud, Qinghai. How many meters above sea level? Is there a big temperature difference between day and night?

Longitude: 94.89, latitude: 36.42. Located in the south of Haixi Mongolian and Tibetan Autonomous Prefecture, 7 10 km away from Xining, the provincial capital, it is a new industrial city in the west of Qinghai Province. Golmud is Mongolian, which means a place with dense rivers. Located in the abdomen of the Qinghai-Tibet Plateau, it has a vast territory and consists of two unconnected jurisdictions, the south-central Qaidam Basin and Tanggula Mountain City, which are more than 400 kilometers apart. The basin is located at the southern margin of Qaidam Basin and the northern foot of Kunlun Mountain, with an average elevation of 2,800 meters. Mount Tanggula is located in the southwest corner of the province, with an average elevation of 5400 meters. The total area of the two jurisdictions is 126220.5 square kilometers, which is equivalent to a Fujian province. Golmud region belongs to the continental plateau climate, with little rain, windy and dry, long and cold winter and short and cool summer. The average annual rainfall is only 4 1.5mm, but the evaporation is as high as 3,000 mm. The sunshine time is long, with an average of 3358 hours per year, and the light and heat resources are sufficient. Tanggula Mountain City is a typical alpine landform with a cold climate, only in winter and summer, with an annual average temperature of -4.2℃, an extreme high temperature of 35℃ and an extreme low temperature of -33.6℃. There is no absolute frost-free period. The annual average precipitation is 284.4 mm, and the annual evaporation is 1667 mm.