Lightning Mapping Array flash detection performance with variable receiver thresholds

Autor: Vanna C. Chmielewski, Eric C. Bruning
Rok vydání: 2016
Předmět:
Atmospheric Science
010504 meteorology & atmospheric sciences
Atmospheric Electricity
VHF source error
0208 environmental biotechnology
Monte Carlo method
02 engineering and technology
01 natural sciences
Lightning
Aerosol and Clouds
Remote Sensing
Flash (photography)
detection efficiency
Distortion
Earth and Planetary Sciences (miscellaneous)
Range (statistics)
network performance
Instruments and Techniques
Research Articles
0105 earth and related environmental sciences
Remote sensing
Mathematical model
flash area distortion
Remote Sensing and Disasters
Lightning Mapping Array
Monte Carlo technique
020801 environmental engineering
Azimuth
Geophysics
Space and Planetary Science
Atmospheric Processes
Thunderstorm
Environmental science
Deep Convective Clouds and Chemistry 2012 Studies (DC3)
Natural Hazards
Research Article
Zdroj: Journal of Geophysical Research. Atmospheres
ISSN: 2169-897X
Popis: This study characterizes Lightning Mapping Array performance for networks that participated in the Deep Convective Clouds and Chemistry field program using new Monte Carlo and curvature matrix model simulations. These open‐source simulation tools are readily adapted to real‐time operations or detailed studies of performance. Each simulation accounted for receiver threshold and location, as well as a reference distribution of source powers and flash sizes based on thunderstorm observations and the mechanics of station triggering. Source and flash detection efficiency were combined with solution bias and variability to predict flash area distortion at long ranges. Location errors and detection efficiency were highly dependent on the station configuration and thresholds, especially at longer ranges, such that performance varied more than expected across different networks and with azimuth within networks. Error characteristics matched prior studies, which led to an increase in flash distortion with range. Predicted flash detection efficiency exceeded 95% within 100 km of all networks.
Key Points LMA location errors and detection efficiency are highly dependent on the station configuration and thresholds, especially at longer rangesPerformance varied greatly across different DC3 networks and with azimuth in each, but overall error characteristics matched prior studiesPredicted flash detection efficiency exceeded 95% within 100 km of all DC3 networks, and these flashes are distorted more at larger ranges
Databáze: OpenAIRE
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