Open AccessA Combined TOA/MDF Technology Upgrade of the U.S. National Lightning Detection Network
Author(s) -
Cummins Kenneth L.,
Murphy Martin J.,
Bardo Edward A.,
Hiscox William L.,
Pyle Richard B.,
Pifer Alburt E.
Publication year - 1998
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/98jd00153
Subject(s) - lightning detection , upgrade , lightning (connector) , meteorology , peak current , environmental science , upper atmospheric lightning , remote sensing , geology , lightning strike , computer science , thunderstorm , physics , power (physics) , quantum mechanics , operating system , electrode , electrochemistry
The U.S. National Lightning Detection Network TM (NLDN) has provided lightning data covering the continental United States since 1989. Using information gathered from more than 100 sensors, the NLDN provides both real‐time and historical lightning data to the electric utility industry, the National Weather Service, and other government and commercial users. It is also the primary source of lightning data for use in research and climatological studies in the United States. In this paper we discuss the design, implementation, and data from the time‐of‐arrival/magnetic direction finder (TOA/MDF) network following a recent system‐wide upgrade. The location accuracy (the maximum dimension of a confidence region around the stroke location) has been improved by a factor of 4 to 8 since 1991, resulting in a median accuracy of 500 m. The expected flash detection efficiency ranges from 80% to 90% for those events with peak currents above 5 kA, varying slightly by region. Subsequent strokes and strokes with peak currents less than 5 kA can now be detected and located; however, the detection efficiency for these events is not quantified in this study because their peak current distribution is not well known.