Initial comparison of lightning mapping with operational time‐of‐arrival and interferometric systems

Mazur, Vladislav; Williams, Earle; Boldi, R.; Maier, Launa M.; Proctor, D.

doi:10.1029/97jd00174

Cited by 64 publications

(60 citation statements)

References 12 publications

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“…As noted by Heckman and Williams (1989) and Mazur, et al (1997), continuedgrowthof the flash somewhere in spaceinto the surroundingelectricfield is required for flash sustenance. Three possiblescenariosfor the occurrenceof lightning flashesin active storm 'cells' are illustrated in Figure 9.…”

Section: Discussion Of Total Lightning Ratementioning

confidence: 99%

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The behavior of total lightning activity in severe Florida thunderstorms

Williams

Boldi

Matlin

et al. 1999

Atmospheric Research

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244

165

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The development of a new observational system called LISDAD (Lightning Imaging Sensor Demonstration and Display) has enabled a study of severe weather in central Florida. The total flash rates for storms verified to be severe are found to exceed 60 flashes/rain, with some values reaching 500 flashes/min. Similar to earlier results for thunderstorm microbursts, the peak flash rate precedes the severe weather at the ground by 5-20 minutes. A distinguishing feature of severe storms is the presence of lightning "jumps"-abrupt increases in flash rate in advance of the maximum rate for the storm. The systematic total lightning precursor to severe weather of all kinds-wind, hail, tornadoes-is interpreted in terms of the updraft that sows the seeds aloft for severe weather at the surface and simultaneously stimulates the ice microphysics that drives the intracloud lightning activity.

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Section: Discussion Of Total Lightning Ratementioning

confidence: 99%

“…that every lightning flash is a double-ended 'tree' (Mazur, et al, 1997). In storms of this kind characterized by extremes in draft strength, liquid water content and ice particle size, the strongly heterogeneous conditions in microphysical growth are obvious.…”

Section: Problemsmentioning

confidence: 99%

The behavior of total lightning activity in severe Florida thunderstorms

Williams

Boldi

Matlin

et al. 1999

Atmospheric Research

Self Cite

244

165

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“…The LMA locates numerous VHF sources from the lightning activity, which can be grouped into individual flashes either manually using special analysis software or through an automated algorithm such as that of Thomas et al (2003), by considering the spatial and temporal proximity of VHF sources to one another. The LMA is most sensitive to VHF radiation from negative breakdown occurring within regions of net positive charge (Mazur et al 1997;Rison et al 1999). Thus, the LMA can be used to identify major positive charge regions tapped by lightning based on analysis of VHF emission density.…”

Section: Steps Design and Execution Thementioning

confidence: 99%

The Severe Thunderstorm Electrification and Precipitation Study

Lang¹,

Miller²,

Weisman³

et al. 2004

Bull. Amer. Meteor. Soc.

184

128

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“…During the period of this analysis (1997-1998), each of seven receiving sites (---6-10 km from a central site) recorded the times of peak VHF amplitude above an adjustable amplitude threshold within 80 /xs windows and at 10 ns resolution [Maier et al, 1995]. The amplitude threshold is set for the central site, and corresponds to a higher minimum detectable signal (MDS) (approximately -73 dBm (M. Murphy, personal communication, 2000) (hereinafter referred to as M2000)) than the -79 dBm MDS of the "out stations," as reported by Mazur et al [1997]. The central site thus sets the overall sensitivity of the system, although weaker amplitude sources detected by the out stations may contribute to individual solutions.…”

Section: Analytical Frameworkmentioning

confidence: 99%

A diagnostic analysis of the Kennedy Space Center LDAR network: 1. Data characteristics

Boccippio¹,

Heckman²,

Goodman³

2001

J. Geophys. Res.

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Abstract. An analytic framework is developed in which to analyze climatological VHF (66 MHz) radiation measurements taken by the Kennedy Space Center Lightning Detection and Ranging (LDAR) network. A 19 month noise-filtered sample of LDAR observations is examined using this framework. It is found that the climatological impulsive VHF source density as observed by LDAR falls off •10 dB every 71 km of ground range away from the network centroid (a 31 km e-folding scale). The underlying vertical distribution of impulsive VHF sources is approximately normally distributed with a mean altitude of 9 km and a standard deviation of 2.7 km; this implies that the loss of below-horizon sources has a negligible effect on column-integrated source densities within a 200 km ground range. At medium to far ranges, location errors are primarily radial and have a slightly asymmetric distribution whose standard deviation increases as r 2. Error moments estimated from observed lightning are significantly higher than those from aircraft-based signal generator or analytic estimates. LDAR bulk flash detection efficiency is predicted to be above 90% to 94-113 km range from the network centroid and to fall below 10% at ranges greater than 200-240 km.

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Initial comparison of lightning mapping with operational time‐of‐arrival and interferometric systems

Cited by 64 publications

References 12 publications

The behavior of total lightning activity in severe Florida thunderstorms

The behavior of total lightning activity in severe Florida thunderstorms

The Severe Thunderstorm Electrification and Precipitation Study

A diagnostic analysis of the Kennedy Space Center LDAR network: 1. Data characteristics

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