Abstract
Precipitation in solid form, i.e., snow, during winter season over the Western Himalayas (WH) leads to the build-up of seasonal snow cover. Seasonal snow cover build-up (snow cover depth and duration) largely depends on atmospheric variables such as temperature, precipitation, radiation, wind, etc. Integrated (combined) influence of atmospheric variables on seasonal snow cover gets reflected in terms of spatial and temporal variability in seasonal snow cover build-up pattern. Hence spatial and temporal variability of seasonal snow cover build-up can serve as a good indicator of climate change in high altitude mountainous regions like the WH. Consistent seasonal snow cover depth and duration, delay days and early melt days of consistent seasonal snow cover at 11 stations spread across different mountain ranges over the WH were analyzed. Mean, maximum and percentiles (25th, 50th, 75th, 90th and 95th) of consistent seasonal snow cover depth and duration show decline over the WH in the recent past 2–3 decades. Consistent seasonal snow cover is found to melt early and snow cover build-up pattern is found to show changes over the WH. Decline in consistent seasonal snow cover depth, duration and changing snow cover build-up pattern over the WH in recent decades indicate that WH has undergone considerable climate change and winter weather patterns are changing in the WH.
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Acknowledgements
The sincere efforts of the Scientists and Technical Staff of Snow and Avalanche Study Establishment (SASE), India, are highly acknowledged for collecting data, at remote locations, under harsh climatic conditions. Positive criticism of the work and invaluable suggestions by anonymous reviewers for improving the quality of manuscript are highly acknowledged.
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Singh, D., Juyal, V. & Sharma, V. Consistent seasonal snow cover depth and duration variability over the Western Himalayas (WH). J Earth Syst Sci 125, 1451–1461 (2016). https://doi.org/10.1007/s12040-016-0737-3
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DOI: https://doi.org/10.1007/s12040-016-0737-3