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Insight into the numerical challenges of implementing 2-dimensional SOA models in atmospheric chemical transport models

Napier, W. J. and Ensberg, J. J. and Seinfeld, J. H. (2014) Insight into the numerical challenges of implementing 2-dimensional SOA models in atmospheric chemical transport models. Atmospheric Environment, 96 . pp. 331-344. ISSN 1352-2310 . http://resolver.caltech.edu/CaltechAUTHORS:20141023-142740037

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Abstract

The new generation of secondary organic aerosol (SOA) models that represent gas- and particle-phase chemistry and thermodynamic partitioning using discrete two-dimensional grids (e.g. SOM, 2D-VBS) cannot be efficiently implemented into three-dimensional atmospheric chemical transport models (CTMs) due to the large number of bins (tracers) required. In this study, we introduce a novel mathematical framework, termed the Oxidation State/Volatility Moment Method, that is designed to address these computational burdens so as to allow the new generation of SOA models to be implemented into CTMs. This is accomplished by mapping the two-dimensional grids onto probability distributions that conserve carbon and oxygen mass. Assessment of the Moment Method strengths (speed, carbon and oxygen conservation) and weaknesses (numerical drift) provide valuable insight that can guide future development of SOA modules for atmospheric CTMs.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.sciencedirect.com/science/article/pii/S1352231014005780PublisherArticle
http://dx.doi.org/10.1016/j.atmosenv.2014.07.048DOIArticle
Additional Information:© 2014 Elsevier Ltd. Received 4 February 2014. Received in revised form 23 July 2014. Accepted 28 July 2014. Available online 30 July 2014. This work was supported by U.S. Department of Energy grant DE-SC 0006626.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC 0006626
Subject Keywords:Secondary organic aerosol; 2-Dimensional SOA model; Chemical transport model; Probability distribution; Computational efficiency
Record Number:CaltechAUTHORS:20141023-142740037
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141023-142740037
Official Citation:W.J. Napier, J.J. Ensberg, J.H. Seinfeld, Insight into the numerical challenges of implementing 2-dimensional SOA models in atmospheric chemical transport models, Atmospheric Environment, Volume 96, October 2014, Pages 331-344, ISSN 1352-2310, http://dx.doi.org/10.1016/j.atmosenv.2014.07.048. (http://www.sciencedirect.com/science/article/pii/S1352231014005780)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50750
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:23 Oct 2014 23:21
Last Modified:23 Oct 2014 23:21

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