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Comparison of six lightning parameterizations in CAM5 and the impact on global atmospheric chemistry

Gordillo‐Vázquez, F.J. and Pérez‐Invernón, F.J. and Huntrieser, Heidi and Smith, A.K. (2019) Comparison of six lightning parameterizations in CAM5 and the impact on global atmospheric chemistry. Earth and Space Science, 6, pp. 2317-2346. American Geophysical Union (AGU). DOI: 10.1029/2019EA000873 ISSN 2333-5084

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019EA000873

Abstract

We present simulations performed with six lightning parameterizations implemented in the Community Atmosphere Model (CAM5). The amount of lightning-produced nitrogen oxides (LNOx) by the various schemes considered is estimated. We provide some insight on how the lightning NO injected in the atmosphere influences the global concentrations of key chemical species such as OH, HO2, H2O2, NOx, O3, SO2, CO, and HNO3. The vertical global averaged densities of HO2, H2O2, CO, and SO2 are depleted due to lightning while those of NO, NO2, O3, OH, and HNO3 increase. Our results indicate that the parameterizations based on the upward ice flux (ICEFLUX) exhibit the largest global and midlatitude spatial correlations (0.73 and 0.632 for ICEFLUX and 0.72 and 0.553 for cloud top height) with respect to satellite global flash rate observations. Five out of the six lightning schemes investigated exhibit larger LNOx per flash in the midlatitudes than in the tropics. In particular, it is found that the ICEFLUX midlatitude LNOx per flash exhibits the largest difference with respect to its predicted tropical LNOx per flash, in agreement with available observations. When using CAM5, the ICEFLUX lightning parameterization could be considered a reliable lightning scheme (within its intrinsic uncertainties) in terms of its geographical distribution. Both ICEFLUX and cloud top height results agree with the enhancements of NO2 and O3 produced by lightning over tropical Atlantic and Africa and the weaker lightning background over the tropical Pacific reported by Martin et al. (2007) in the periods and locations (upper troposphere) where lightning is expected to dominate the trace gas observations.

Item URL in elib:https://elib.dlr.de/131350/
Document Type:Article
Title:Comparison of six lightning parameterizations in CAM5 and the impact on global atmospheric chemistry
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gordillo‐Vázquez, F.J.CSIC, Granada, SpanienUNSPECIFIED
Pérez‐Invernón, F.J.CSIC, Granada, SpanienUNSPECIFIED
Huntrieser, HeidiDLR, IPAhttps://orcid.org/0000-0001-8046-1859
Smith, A.K.NCAR, Boulder, CO, USAUNSPECIFIED
Date:9 November 2019
Journal or Publication Title:Earth and Space Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :10.1029/2019EA000873
Page Range:pp. 2317-2346
Publisher:American Geophysical Union (AGU)
ISSN:2333-5084
Status:Published
Keywords:lightning parameterization, lightning-produced NOx, upward ice flux
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Huntrieser, Dr.rer.nat. Heidi
Deposited On:27 Nov 2019 09:44
Last Modified:26 May 2020 16:13

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