The Nenana Ice Classic: Tanana River Ice Annual Breakup Dates, Version 2 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated with the latest ice breakup date and time for 2026.
This data set is a record of annual ice breakup on the Tanana River since 1917. A tripod, connected to an on-shore clock with a string, is planted in two feet of river ice during river freeze-up in October or November. The following spring, the clock automatically stops when the tripod moves as the ice breaks up. The time series of Tanana river ice breakup dates can be used to indicate climate change in the region.
Data set DOI: https://doi.org/10.5067/CAQ58H42LQY2