Publication Date:
2019-07-19
Description:
Rapid increases in total lightning (also termed "lightning jumps") have been observed for many decades. Lightning jumps have been well correlated to severe and hazardous weather occurrence. The main focus of lightning jump work has been on the development of lightning algorithms to be used in realtime assessment of storm intensity. However, in these studies it is typically assumed that the updraft "increases" without direct measurements of the vertical motion, or specification of which updraft characteristic actually increases (e.g., average speed, maximum speed, or convective updraft volume). Therefore, an endtoend physical and dynamical basis for coupling rapid increases in total flash rate to increases in updraft speed and volume must be understood in order to ultimately relate lightning occurrence to severe storm metrics. Herein, we use polarimetric, multiDoppler, and lightning mapping array measurements to provide physical context as to why rapid increases in total lightning are closely tied to severe and hazardous weather.
Keywords:
Meteorology and Climatology
Type:
M14-3907
,
American Meteorological Society Conference; Jan 04, 2015 - Jan 08, 2015; Phoenix, AZ; United States|Conference on the Meteorological Applications of Lightning Data; Jan 04, 2015 - Jan 08, 2015; Phoenix, AZ; United States
Format:
application/pdf
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