Source and Chemistry of Hydroxymethanesulfonate (HMS) in Fairbanks, Alaska

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dc.contributor.authorCampbell, James R.
dc.contributor.authorBattaglia Jr., Michael
dc.contributor.authorDingilian, Kayane
dc.contributor.authorCesler-Maloney, Meeta
dc.contributor.authorClair, Jason St.
dc.contributor.authorHanisco, Thomas F.
dc.contributor.authorRobinson, Ellis
dc.contributor.authorDeCarlo, Peter
dc.contributor.authorSimpson, William
dc.contributor.authorNenes, Athanasios
dc.contributor.authorWeber, Rodney J.
dc.contributor.authorMao, Jingqiu
dc.date.accessioned2023-07-31T13:48:58Z
dc.date.available2023-07-31T13:48:58Z
dc.date.issued2022-05-11
dc.description.abstractFairbanks, Alaska, is a subarctic city with fine particle (PM₂.₅) concentrations that exceed air quality regulations in winter due to weak dispersion caused by strong atmospheric inversions, local emissions, and the unique chemistry occurring under the cold and dark conditions. Here, we report on observations from the winters of 2020 and 2021, motivated by our pilot study that showed exceptionally high concentrations of fine particle hydroxymethanesulfonate (HMS) or related sulfur(IV) species (e.g., sulfite and bisulfite). We deployed online particle-into-liquid sampler–ion chromatography (PILS-IC) in conjunction with a suite of instruments to determine HMS precursors (HCHO, SO₂) and aerosol composition in general, with the goal to characterize the sources and sinks of HMS in wintertime Fairbanks. PM₂.₅ HMS comprised a significant fraction of PM₂.₅ sulfur (26–41%) and overall PM₂.₅ mass concentration of 2.8–6.8% during pollution episodes, substantially higher than what has been observed in other regions, likely due to the exceptionally low temperatures. HMS peaked in January, with lower concentrations in December and February, resulting from changes in precursors and meteorological conditions. Strong correlations with inorganic sulfate and organic mass during pollution events suggest that HMS is linked to processes responsible for poor air quality episodes. These findings demonstrate unique aspects of air pollution formation in cold and humid atmospheres.en_US
dc.description.sponsorshipThe authors thank the Alaska Department of Environmental Conservation (ADEC) for their substantial support on logistics and their data collected at the NCORE site. The authors thank Hannah Halliday (EPA) for help with the regression code. J.R.C. and J.M. were supported by the NSF Atmospheric Geoscience Program (grant no. AGS─2029747) and the NSF Navigating the New Arctic Program (grant no. ICER─1927750). K.D. and R.J.W. were supported by the NSF Atmospheric Geoscience Program (grant no. AGS─2029730) and the NSF Navigating the New Arctic Program (grant no. ICER─1927778). A.N. acknowledges support from the PyroTRACH project (ERC-2016-COG, project ID 726165) funded from H2020-EU.1.1.-Excellent Science─European Research Council (ERC) and by the Horizon 2020 project FORCeS (grant 821205). M.B., A.N., and R.J.W. also acknowledge the support from NASA CAMP2Ex (80NSSC18K0557). T.F.H. acknowledges support from the NASA Tropospheric Composition Program, and J.M.S.C. acknowledges support from the NASA Tropospheric Composition Program and the NSF Atmospheric Chemistry Program (grant no. 2029770).en_US
dc.description.urihttps://pubs.acs.org/doi/10.1021/acs.est.2c00410en_US
dc.format.extent11 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2gfja-fa9z
dc.identifier.citationCampbell, James R., Michael Jr. Battaglia, Kayane Dingilian, Meeta Cesler-Maloney, Jason M. St Clair, Thomas F. Hanisco, Ellis Robinson, et al. “Source and Chemistry of Hydroxymethanesulfonate (HMS) in Fairbanks, Alaska.” Environmental Science & Technology 56, no. 12 (June 21, 2022): 7657–67. https://doi.org/10.1021/acs.est.2c00410.en_US
dc.identifier.urihttps://doi.org/10.1021/acs.est.2c00410
dc.identifier.urihttp://hdl.handle.net/11603/28929
dc.language.isoen_USen_US
dc.publisherACSen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleSource and Chemistry of Hydroxymethanesulfonate (HMS) in Fairbanks, Alaskaen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-9367-5749en_US

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