Study on Change of the Glacier Mass Balance and Its Response to Extreme Climate of Urumqi Glacier No.1 in Tianshan Mountains in Recent 41 Years

Glaciers are susceptible indicators of climate change and crucial parts the world’s water cycle. In context global warming, we took Urumqi Glacier No.1 (UG1) as an example, which is situated at source River on northern slope Tianshan Mountains, Xinjiang, combined with data Daxigou Meteorological Station from 1980 to 2020, glacier mass balance its response extreme discussed. The results suggest that UG1 showed a downward trend over studied 41-year period, loss increased. cumulative value was ?19,776 mm w.e., average annual ?482 w.e.a?1. Mann-Kendall test point occurred around 1994, became more negative after 1994. same changing not in different seasons. inter-annual variation summer drastic, showing marked trend; winter small, slight uptrend. indices where located only TX90p TX10p changed observably precipitation evidently had been rise. indicated temperature rising, warming significant, increasing. During 1980–2020, substantially correlated (TX90p, TXx) but indices. Analyzing seasonal scale, memorably TX10p, TXx), correlation coefficient between index R95p range 0.36~0.40 (p < 0.05). According indices, mainly affected by temperature, primarily precipitation.