Data set update: Nenana Ice Classic: Tanana River Ice Annual Breakup Dates, Version 2

The Nenana Ice Classic: Tanana River Ice Annual Breakup Dates, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. The ice breakup date for 2021 has been added, so the data set now spans 1 April 1917 to 30 April 2021. This data set provides the date and time when the Tanana River ice, in the town of Nenana, AK, breaks up each spring. The timing of the ice breakup is given in both standard date and time units and as a decimal day of the year. Data set DOI: https://doi.org/10.5067/CAQ58H42LQY2