Recent studies confirmed with high confidence that snow cover extent continues to decrease across the Northern Hemisphere in all months of the year ; Eyring et al. ; Fox-Kemper et al.  for more details). From 1922 to 2018, snow cover extent in the Northern Hemisphere peaked in the 1950s to 1970s  and has consistently reduced since the end of the 20th century . The consistently negative snow-mass trend of approximately 5 Gt yr-1 in 1981-2018 for all winter-spring months , including 4.6 Gt yr-1 decrease of snow mass across North America and a negligible trend across Eurasia, has been observed . Negative trends in snow- dominated period duration of 2.0-6.5 weeks per decade was detected from surface and satellite observations during 1971-2014 , mainly owing to earlier seasonal snowmelt . The observed decrease of snow cover metrics  led to changes in runoff seasonality and has impacted water supply infrastructure , particularly in southwestern Russia, western USA and central Asia. In these regions, snowmelt runoff accounts for more than 30% of irrigated water supplies . Negative impacts on hydropower production due to changes in the seasonality of snowmelt have also been documented .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report