Ice-Lollies: An ice particle generated in supercooled conveyor belts

On 21st January 2009, a maturing low pressure weather system approached the UK along with several associated frontal systems. As a part of the APPRAISE-Clouds project, an observational research flight took place in southern England, sampling the leading warm front of this system. During the flight, a distinctive hydrometeor type was repeatedly observed which has not been widely reported in previous studies. We refer to the hydrometeors as “drizzle-rimed columnar ice”, or “ice-lollies” for short due to their characteristic shape. We discuss the processes that led to their formation using in-situ and remote sensing data.