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High Mountain Asia Annual 90m Glacier Surface Melt/Freeze Phenology from SAR Imagery V001

Published by NASA NSIDC DAAC | National Aeronautics and Space Administration | Catalog Last Checked: August 04, 2025 at 11:13 AM | Dataset Last Updated: March 31, 2025
This data set contains annual surface melt onset and freeze onset dates across all glaciers in the Hindu Kush Himalayas (HKH) retrieved from time series synthetic aperture radar (SAR) imagery. The data set was based on analysis of C-band Sentinel-1 A/B SAR time series, comprising 32,741 Sentinel-1 A/B SAR images. The duration of annual glacier surface melt was determined for 105,432 mapped glaciers (83,102 km2 glacierized area) during the calendar years 2017-2020.

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