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Date: 02/13 (Thu)
Time: 14:45-16:30
Place: 8-1-03
Speaker: "Loren Joy Estrebillo"

Title: Estimation of Lighting Location using V-POTEKA LIghtning Observation Network in the Western North Pacific 

Abstract:

The Philippines sits in the western North Pacific (WNP), which is a region where most of the strongest typhoons originate. An average of 20 tropical cyclones (TC) crosses and/or makes landfall in the Philippines each year. This makes the archipelago susceptible to the damages caused by meteorological hazards brought about by TCs. There has been a significant development in the accuracy of TC track forecast within the Philippine Area of Responsibility (PAR) over the years with the use of ground-based synoptic observations, weather radars, and meteorological satellites. However, prediction of TC intensity remains a significant challenge. Lightning activity is an indicator of the dynamics and microphysics in thunderstorms, TCs and torrential rainfall. Recent studies suggest that lightning activity in tropical cyclones can give predictive information about its intensity and development. Thus, a ground-based lightning observation system (V-POTEKA) has been developed, and it has been installed at four stations in the Philippines, Guam, Palau and Okinawa (among others). The V-POTEKA system analyzes lightning data, extracts pertinent information, i.e., peak amplitude and time of the triggered waveform, and transmits data to a server through 3G communication. Lightning locations from V-POTEKA data were calculated using the difference in time-of-arrival method. Lightning activity in TCs along the WNP region was investigated using the V-POTEKA lightning locations. 
In this EOU seminar, I will show results of analyses of select TCs in 2019, that were examined using NASA Cyclone Global Navigation Satellite System (CYGNSS) ocean winds and best track data from the JMA and JTWC
 
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