EOL Seminar: The Role of Multiple Thermals in the Development of Precipitation

Date: 
Tuesday, May 15, 2018 - 15:30 to 16:30
Location: 
FL2 - 1022
Contact Name: 
Diane Sierra
Contact Email: 
Contact Phone: 
303-497-8746

Professor Alan Blyth
National Centre for Atmospheric Science - University of Leeds


It has been known for a long time that multiple thermals can be important for recirculating particles and providing a new source of liquid water content that is so important for the growth of precipitation embryos and splintering during riming. There may also be reduced entrainment and/or dilution in the second (or third, ...) thermal, resulting in a further enhancement of the amount of liquid water content. In certain situations, e.g. when the clouds are not particularly deep, the multiple thermals can be critical for the production of rain. Furthermore, the existence of high values of liquid water content for longer periods may lead to prolonged heavy precipitation and flash flooding. It is important that models are able to resolve the thermals and represent the entrainment and microphysical processes. I will discuss various ideas involving multiple thermals from past work and present results from recent field projects. I will also discuss some upcoming projects and possible collaborative initiatives.

Tuesday, 15 May 2018, 3:30 PM
Refreshments 3:15 PM
NCAR-Foothills Laboratory • 3450 Mitchell Lane
Bldg 2 Large Auditorium (Rm1022)
Webcast: https://ucarconnect.ucar.edu/live (Room 2: FL2-1022)