ABoVE: Rain-on-Snow Frequency and Distribution during Cold Seasons, Alaska, 1988-2023
This dataset provides maps of rain-on-snow (ROS) events across Alaska for the individual cold season months from November to March using observations from two space-borne passive microwave radiometers: (a) the Advanced Microwave Scanning Radiometer for EOS and Advanced Microwave Scanning Radiometer 2 (AMSR-E/2) from 2002 to 2023; and (b) the Special Sensor Microwave Imager and the Special Sensor Microwave Imager Sounder (SSMI/S) from 1988 to 2020.

Figure 1. Total numbers of rain-on-snow (ROS) events per 6-km pixel over Alaska for water year 2014, which were derived using the respective AMSR-E/2 (left) and SSMI/S (right) observations.
Citation: Pan, C.G., J. Du, P.B. Kirchner, and J.S. Kimball. 2025. ABoVE: Rain-on-Snow Frequency and Distribution during Cold Seasons, Alaska, 1988-2023. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2415