Observation and modeling of the evolution of Texas power plant plumes

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dc.citation.firstpage455
dc.citation.journalTitleAtmospheric Chemistry and Physics
dc.citation.lastpage468
dc.citation.volumeNumber12
dc.contributor.authorZhou, W.
dc.contributor.authorCohan, D.S.
dc.contributor.authorPinder, R.W.
dc.contributor.authorNeuman, J.A.
dc.contributor.authorHolloway, J.S.
dc.contributor.authorPeischl, J.
dc.contributor.authorRyerson, T.B.
dc.contributor.authorNowak, J.B.
dc.contributor.authorFlocke, F.
dc.contributor.authorZheng, W.G.
dc.date.accessioned2016-02-02T21:22:53Z
dc.date.available2016-02-02T21:22:53Z
dc.date.issued2012
dc.description.abstractDuring the second Texas Air Quality Study 2006 (TexAQS II), a full range of pollutants was measured by aircraft in eastern Texas during successive transects of power plant plumes (PPPs). A regional photochemical model is applied to simulate the physical and chemical evolution of the plumes. The observations reveal that SO2 and NOy were rapidly removed from PPPs on a cloudy day but not on the cloud-free days, indicating efficient aqueous processing of these compounds in clouds. The model reasonably represents observed NOx oxidation and PAN formation in the plumes, but fails to capture the rapid loss of SO2 (0.37 h−1) and NOy (0.24 h−1) in some plumes on the cloudy day. Adjustments to the cloud liquid water content (QC) and the default metal concentrations in the cloud module could explain some of the SO2 loss. However, NOy in the model was insensitive to QC. These findings highlight cloud processing as a major challenge to atmospheric models. Model-based estimates of ozone production efficiency (OPE) in PPPs are 20–50 % lower than observation-based estimates for the cloudy day.
dc.identifier.citationZhou, W., Cohan, D.S., Pinder, R.W., et al.. "Observation and modeling of the evolution of Texas power plant plumes." <i>Atmospheric Chemistry and Physics,</i> 12, (2012) European Geosciences Union: 455-468. http://dx.doi.org/10.5194/acp-12-455-2012.
dc.identifier.doihttp://dx.doi.org/10.5194/acp-12-455-2012
dc.identifier.urihttps://hdl.handle.net/1911/88309
dc.language.isoeng
dc.publisherEuropean Geosciences Union
dc.rightsThis work is distributed under the Creative Commons Attribution 3.0 License.
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.titleObservation and modeling of the evolution of Texas power plant plumes
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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