TY  - Data
T1  - Cryospheric hydrometeorology observation in the Hulu Catchment (CHOICE), Qilian Mountains, China (2009-2017)
A1  - Han chuntan
A1  - Chen renshen
A1  - LiuZhangwen
DO  - 10.5061/dryad.sh6n0tc
PY  - 2023
DA  - 2023-07-13
PB  - National Cryosphere Desert Data Center
AB  - Based on our observation data and other data, the past runoff trends of mountain cryosphere in China and future trend by CBHM was documented. In the past 50 yr, river runoff has generally shown an increasing trend as a result of increased rainfall, snowfall, and glacial runoff in the cold regions of western China. Because the total glacier decreased by ~18% in area and 28% in volume in western China, Permafrost degradation has mainly increased infiltration and enlarged the groundwater reservoir. This could lead to an increased winter flow in western China. Although the extent of snow cover has decreased slightly over the past 50 yr, snowmelt has shown an increasing trend in most watersheds in the cold regions of western China as a result of the increased snowfall. Along with increasing air temperature, glacial runoff will decrease in the near future, and the rate of this decrease is inversely proportional to the glacial size. According to different receptive concentration pathway (RCP) scenarios, glacial runoff will decrease 60 to 70% and 80 to 90%, compared with their average values in the southern and southeastern Tibet Plateau and western Qilian Mountains, respectively, between 1971 and 2010 under RCP2.6 and RCP 4.5 by the 2090s. Most of the small glaciers will have disappeared, leading to glacial runoff started to decrease.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/89661936-e14c-4739-9a93-0cfdbd7d60bc
ER  -