Affiliations: [a] Qingdao Engineering Technology Research Center for Meteorological Disaster Prevention, Qingdao Meteorological Bureau, Qingdao 266003, Shangdong, China | [b] Fujian Technology Research Center for Meteorological Disaster Prevention, Fujian Meteorological Bureau, Fuzhou 350001, Fujian, China | [c] Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China
Correspondence:
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Corresponding author: Huaji Pang, Qingdao Engineering Technology Research Center for Meteorological Disaster Prevention, Qingdao Meteorological Bureau, No. 4, Fulongshan Road, Qingdao 266003, Shangdong, China. E-mail: [email protected].
Abstract: This paper based on Barrick’s formulations and Wait’s formulations, we analyzed the lightning vertical electric field and it is derivative in the time domain along rough sea surface. Furthermore, we discussed that it effects on Time-of-Arrival (ToA)-based lightning location systems (LLS). We found that the wave-shape and time-delay of the vertical electric field can be significantly affected when propagates along rough the sea surface. The rough sea surface has a few effect on the magnitude of the vertical electric fields. With the observation distance increase, the rise time of the wave-shape becomes long with the increasing of the wind speed. The peaks of the field derivative obviously decrease with the increasing of the wind speed, and the farther observation distance is, the stronger attenuation is. The time-delay of the field derivative increases as the wind speed increases. The observed time-delay resulting from the propagation along rough sea surface might impact the location accuracy of ToA-based LLS.
Keywords: Lightning vertical electric field, rough sea surface, Qingdao buoy station
