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Estimates of the Lightning NOx Profile in the Vicinity of the North Alabama Lightning Mapping ArrayThe NASA Marshall Space Flight Center Lightning Nitrogen Oxides Model (LNOM) is applied to August 2006 North Alabama Lightning Mapping Array (LMA) data to estimate the raw (i.e., unmixed and otherwise environmentally unmodified) vertical profile of lightning nitrogen oxides, NOx = NO + NO 2 . This is part of a larger effort aimed at building a more realistic lightning NOx emissions inventory for use by the U.S. Environmental Protection Agency (EPA) Community Multiscale Air Quality (CMAQ) modeling system. Data from the National Lightning Detection Network TM (NLDN) is also employed. Overall, special attention is given to several important lightning variables including: the frequency and geographical distribution of lightning in the vicinity of the LMA network, lightning type (ground or cloud flash), lightning channel length, channel altitude, channel peak current, and the number of strokes per flash. Laboratory spark chamber results from the literature are used to convert 1-meter channel segments (that are located at a particular known altitude; i.e., air density) to NOx concentration. The resulting raw NOx profiles are discussed.
Document ID
20100020940
Document Type
Conference Paper
Authors
Koshak, William J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Peterson, Harold (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 25, 2013
Publication Date
April 19, 2010
Subject Category
Meteorology and Climatology
Report/Patent Number
M10-0276
Meeting Information
2010 ILDC/ILMC Lightning''s Impact on Society Conference/Vaisala(Orlando, Fl)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.