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Effects of lightning NOx production during the 21 July European Lightning Nitrogen Oxides Project storm studied with a three-dimensional cloud-scale chemical transport model

Ott, Lesley E. and Pickering, Kenneth E. and Stenchikov, Georgiy L. and Huntrieser, Heidi and Schumann, Ulrich (2007) Effects of lightning NOx production during the 21 July European Lightning Nitrogen Oxides Project storm studied with a three-dimensional cloud-scale chemical transport model. Journal of Geophysical Research, 112 (D05307), pp. 1-18. DOI: 10.1029/2006JD007365.

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Official URL: http://www.agu.org/journals/jd/jd0705/2006JD007365/2006JD007365.pdf

Abstract

The 21 July 1998 thunderstorm observed during the European Lightning Nitrogen Oxides Project (EULINOX) project was simulated using the three-dimensional Goddard Cumulus Ensemble (GCE) model. The simulation successfully reproduced a number of observed storm features including the splitting of the original cell into a southern cell which developed supercell characteristics and a northern cell which became multicellular. Output from the GCE simulation was used to drive an offline cloud-scale chemical transport model which calculates tracer transport and includes a parameterization of lightning NOx production which uses observed flash rates as input. Estimates of lightning NOx production were deduced by assuming various values of production per intracloud and production per cloud-to-ground flash and comparing the results with in-cloud aircraft observations. The assumption that both types of flashes produce 360 moles of NO per flash on average compared most favorably with column mass and probability distribution functions calculated from observations. This assumed production per flash corresponds to a global annual lightning NOx source of 7 Tg N yr−1. Chemical reactions were included in the model to evaluate the impact of lightning NOx on ozone. During the storm, the inclusion of lightning NOx in the model results in a small loss of ozone (on average less than 4 ppbv) at all model levels. Simulations of the chemical environment in the 24 hours following the storm show on average a small increase in the net production of ozone at most levels resulting from lightning NOx, maximizing at approximately 5 ppbv day−1 at 5.5 km. Between 8 and 10.5 km, lightning NOx causes decreased net ozone production.

Document Type:Article
Title:Effects of lightning NOx production during the 21 July European Lightning Nitrogen Oxides Project storm studied with a three-dimensional cloud-scale chemical transport model
Authors:
AuthorsInstitution or Email of Authors
Ott, Lesley E.Univ. of Maryland, Md., USA
Pickering, Kenneth E.Univ. of Maryland, Md., USA
Stenchikov, Georgiy L.Univ. of New Brunswick, NJ, USA
Huntrieser, HeidiUNSPECIFIED
Schumann, UlrichUNSPECIFIED
Date:2007
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:112
DOI:10.1029/2006JD007365
Page Range:pp. 1-18
Status:Published
Keywords:lightning-NOx, convective transport
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jana Freund
Deposited On:25 Jun 2007
Last Modified:20 Oct 2014 14:31

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