Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhess-2016-231
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
02 Aug 2016
Review status
This discussion paper has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The manuscript was not accepted for further review after discussion.
Lightning risk assessment at a high spatial resolution using the resident sub-district scale: A case study in Beijing metropolitan areas
Hai Bo Hu1 and Jing Xiao Li2 1Institute of Urban Meteorology, CMA, Beijing, 100089, China
2Beijing Lightning Devices Security Test Center, Beijing, 100080, China
Abstract. Lightning risk indexes identifying the potential number of dangerous lightning events (NDLEs) and ground sensitivity to lightning in resident sub-districts of Beijing metropolitan areas have been unprecedentedly estimated on a 5 m resolution grid. The gridded cloud to ground (CG) lightning stroke density was used in the NDLE calculation, on account of multiple contacts formed by CG lightning flash multiplicity. Meanwhile, in the NDLE estimates, the critical CG stroke gridded densities derived from the lightning location system (LLS) data were corrected for network detection efficiency (DE). This case study on resident sub-district indicates that the site-specific sensitivity to lightning, which is determined by the terrain factors related to lightning attachment, as well as lightning rod effects induced by nearby structures, differs greatly across types of underlying ground areas. The discrepancy of the NDLE which is the numerical product of sensitivity and CG stroke density, is predominated by the sensitivity on account of the relatively stationary CG stroke density in a resident sub-district scale. Conclusively, the visualization of lightning risk sensitivity and NDLE discrepancy in parts of a resident sub-district at high spatial resolution makes it convenient in risk reduction and risk control for lightning risk management.

Citation: Hu, H. B. and Li, J. X.: Lightning risk assessment at a high spatial resolution using the resident sub-district scale: A case study in Beijing metropolitan areas, Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2016-231, 2016.
Hai Bo Hu and Jing Xiao Li
Hai Bo Hu and Jing Xiao Li

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