Climatic conditions of Gongga Mountain

The climate in Gongga Mountain area is deeply influenced by altitude. Temperature decreases with the elevation, while precipitation increases with the elevation. According to the analysis of observation data for many years, the average annual temperature in Dongpo is 0.67℃/ 100 m, and the annual precipitation gradient is 67.5 mm/100 m, that is, every time the altitude rises 100 m, the temperature drops by 0.67℃ and the precipitation increases by 67.5 mm. The precipitation gradient above 3000 m may fluctuate. This feature of mountain climate makes Hailuogou appear subtropical, warm temperate, cold temperate, sub-cold zone and polar climate from the mouth of the ditch, such as "one mountain with four seasons, ten miles of different days"; The annual average temperature of Moxi Town in the eastern foothills is 13℃, while that of Camp No.4 in Hailuogou at an altitude of 3,400 meters is only 1℃, while the annual average temperature near the snow line at an altitude of 4,900 meters is as low as -9℃, and June-June is the rainy season, 168. The annual precipitation under the mountain is 800-900 mm, and the maximum precipitation on the mountain can reach more than 3000 mm, mostly in July, August and September. In summer, the cloud cover is large, and the daily temperature difference is also large. Near the snow line at an altitude of 4,900 meters, the temperature can reach 10℃ in the daytime in summer and often drop to-10℃ at night. The dry season is sunny and milder than other areas at the same latitude. The highest temperature in a year is July. Mountaineering activities are mostly selected in the alternate period of dry season and rainy season.