Meteorological inventory of rain-on-snow events and detection assessment in the Canadian arctic archipelago using passive microwave radiometry

The spatial and temporal distribution of ROS across the Canadian Arctic Archipelago (CAA) remains poorly understood owing to their sporadic nature in time and space. In this study, we highlight the distribution and evolution of ROS occurrences inventoried since 1984 at 14 Environment and Climate Change Canada (ECCC) weather stations in the CAA. We introduce an adaptation of the detection algorithm proposed by Dolant et al., (2016), to investigate spatio-temporal patterns in occurrence. Across the 14 weather stations, more than 600 ROS events were identified since 1984, 80% of which occurred during the Spring season.