How does snow melt and affect radar observations? This paper investigates the bright band, a phenomenon of enhanced reflectivity in radar observations caused by melting snow. Vertically pointing radar data from the UK was used to determine the vertical depth of the bright band and was compared to a simple model of snowflake melting, the results showing that an increase in the depth of the bright band was seen with increasing background reflectivities, increasing from 100–150 m at 10 dBZ to 200–400 m at 25 dBZ. The model showed similar trends but produced less intense bright bands and found the vertical air motions had little dependence on depth. The investigation provided a greater view into the phenomena and how it affects radar observation. This research contributes to a better understanding of the variability in snow melting, and improves weather radar accuracy.
Published in Meteorological Applications, this research fits within the journal's scope by exploring the relationship between meteorological processes and radar observations. By analyzing the characteristics of the radar bright band and relating them to a model of snowflake melting, the paper offers valuable insights for improving weather forecasting and radar interpretation.