glacier ice is projected to decrease by 49 + 7% and 64 + 5% by the end of the century under RCP4.5 and RCP8.5 scenarios, respectively . Local- and regional-scale projections suggest that peak water will generally be reached around the middle of the century, followed by steadily declining glacier runoff thereafter . A global-scale projection suggests that a decline in glacier runoff by 2100  may reduce basin runoff by about 10% for at least 1 month of the melt season . Significantly, research on climate change and its impact across Asia remains inconclusive and requires an assessment at the sub-regional scale .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report