Papers submitted, in review, accepted, or in press:
Sunday, M.O., L.M.D. Heinlein, J. He, A. Moon, S. Kapur, T. Fang, K.C. Edwards, F. Guo, J. Dibb, J.H. Flynn III, B. Alexander, M. Shiraiwa, and C. Anastasio, Hydrogen Peroxide Photoformation in Particulate Matter and its Contribution to S(IV) Oxidation During Winter in Fairbanks, Alaska, in review Atmos. Chem. Phys. (2024).
Jongebloed, U.A., J.I. Chalif, L. Tashmim, W.C. Porter, K.H. Bates, Q. Chen, E.C. Osterberg, B.G. Koffman, J. Cole-Dai, D.A. Winski, D.G. Ferris, K.J. Kreutz, C.P. Wake, and B. Alexander, Dimethyl sulfide chemistry over the industrial era: comparison of key oxidation mechanisms and long-term observations, in revision for Atmos. Chem. Phys. (2024).
Kang, L., R. Marchand, P.-L. Ma, M. Huang, R. Wood, U.A. Jongebloed, B. Alexander, Understanding Biases in E3SMv2 Simulated Cloud Droplet Number and Aerosol Concentrations over the Southern Ocean, in revision for Journal of Advances in Modeling Earth Systems (2024).
Chan, Y.-C., L. Jaegle, P. Campuzano-Jost, D. Catling, V. Furdui, W.A. Jackson, J. Jimenez, D. Kim, and B. Alexander, Global Model of Atmospheric Chlorate on Earth, in revision for J. Geophys. Res. (2024).
Albertin, S., S. Bekki, J. Savarino, N. Brett, K.S. Law, M. Cesler-Maloney, J.H. Flynn, F. Guo, B. Barret, N. Caillon, B. D’Anna, E. Dieudonne, A. Lamothe, S. Richard, B. Temime-Roussel, B. Alexander, S.R. Arnold, S. Decesari, D.J. Fochessato, J. Mao, and W. Simpson, Unravelling urban NOx emission sources in polluted Arctic wintertime using NO2 nitrogen isotopes, accepted to J. Geophys. Res. (2024).
Brett, N., S.R. Arnold, K.S. Law, J. G. Fochesatto, J.-C. Raut, T. Onishi, R. Gilliam, K. Fahey, D. Huff, G. Pouliot, B. Barret, E. Dieudonne, R. Pohorsky, J. Schmale, A. Baccarini, S. Bekki, G. Pappaccogli, F. Scotto, S. Decesari, A. Donateo, M. Cesler-Maloney, W. Simpson, P. Medina, B. D’Anna, B. Temime-Roussel, J. Savarino, S. Albertin, J. Mao, B. Alexander, A. Moon, P.F. DeCarlo, V. Selimovic, R. Yokelson, and E.S. Robinson, Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska during ALPACA-2022, accepted to Atmos. Chem. Phys. (2024).
Published, peer-reviewed papers:
2024
83. Chalif, J.I., U.A. Jongebloed, E.C. Osterberg, B.G. Koffman, B. Alexander, D.A. Winski, D.J. Polashenski, K. Stamieskin, D.G. Ferris, K.J. Kreutz, C. Wake, and J. Cole-Dai, Pollution drives enigmatic decline in subarctic biogenic sulfur, Nature Geosciences, 17, 1016-1021, doi:10.1038/s41561-024-01543-w (2024).
82. Chen, Q., X. Wang, X. Fu, X. Li, B. Alexander, X. Peng, W. Wang, M. Xia, Y. Tan, J. Gao, J. Chen, Y. Mu, P. Liu, and T. Wang, Impact of molecular chlorine production from aerosol iron photochemistry on atmospheric oxidative capacity in North China, Env. Sci. and Tech. doi: 10.1021/acs.est.4c02534 (2024).
81. Dingilian, K.; Hebert, E.; Battaglia, M.; Campbell, J.; Cesler-Maloney, M.; Simpson, W.; St. Clair, J.; Dibb, J.; Temime-Roussel, B.; D’Anna, B. ; Moon, A.; Alexander, B.; Nenes, A.; Mao, J.; Weber, R., Hydroxymethanesulfonate and Sulfur (IV) in Fairbanks Winter During the ALPACA Study, ACS EST Air, doi: 10.1021/acsestair.4c00012 (2024).
80. Jiang, Z., B. Alexander, J. Savarino, L. Geng, An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland and Dome C, Antarctica, 24 (8), 4895-4914, Atmos. Chem. Phys. doi:0.5194/acp-24-4895-2024, (2024).
79. Tashmim, L., W.C. Porter, Q. Chen, B. Alexander, C.H. Fite, C.D. Holmes, J.R. Pierce, B. Croft, and S. Ishino, Contribution of expanded marine sulfur chemistry to the seasonal variability of DMS oxidation products and size-resolved sulfate aerosol, 24 (6), 3379–3403, Atmos. Chem. Phys., doi:10.5194/acp-24-3379-2024 (2024).
78. Shah, V., C.A. Keller, K.E. Knowland, A. Christiansen, L. Hu, H. Wang, X. Lu, B. Alexander, and D.J. Jacob, Tropospheric ozone rise in the northern midlatitudes increasingly driven by nitrate particles, 51, 5, e2023GL107980, Geophys. Res. Lett., doi:10.1029/2023GL107980 (2024).
77. Moon, A., U. Jongebloed, K.K. Dinglian, Y.-C. Chan, M. Cesler-Maloney, W.R. Simpson, R.J. Weber, L. Tsiang, F. Yazbeck, S. Zhai, A. Wedum, A.J. Turner, S. Albertin, S. Bekki, J. Savarino, K. Gribanov, K.A. Pratt, E.J. Costa, C. Anastasio, M.O. Sunday, L.M.D. Heinlein, J. Mao, and B. Alexander, Primary sulfate is the dominant source of particulate sulfate during winter in Fairbanks, Alaska, 1, 3, 139-149, ACS EST Air, doi:10.1021/acsestair.3c00023 (2024). Data. PMCID# PMC10928653. UAF Press Release.
76. Simpson, W.R., J. Mao, G.J. Fochesatto, K.S. Law, P.F. DeCarlo, J. Schmale, K.A. Pratt, S.R. Arnold, J. Stutz, J.E. Dibb, J. Creamean, R.J. Weber, B. Williams, B. Alexander, L. Hu, R. Yokelson, M. Shiraiwa, S. Descesari, C. Anastasio, B. D’Anna, R. Gilliam, A. Nenes, J.M. St. Clair, B. Trost, J. Flynn, J. Savarino, L. Conner, N. Kettle, K. Heeringa, S. Albertin, A. Baccarini, B. Barret, M. Battaglia, S. Bekki, T.J. Brado, N. Brett, D. Brus, J.R. Campbell, M. Cesler-Maloney, S. Cooperdock, K.C. de Carvalho, H. Delbarre, P. DeMott, C. Dennehy, E. Dieudonne, K.K. Dingilian, A. Donateo, K.M. Doulgeris, K.C. Edwards, K. Fahey, T. Fang, F. Guo, L.M.D. Heinlein, A. Holen, D. Huff, A. Ijaz, S. Kapur, D. Ketcherside, E. Levin, E. Lill, A. Moon, T. Onishi, G. Pappaccogli, R.Perkins, R. Pohorsky, J.-C. Raut, F. Ravetta, T. Roberts, E.S. Robinson, F. Scoto, V. Selimovic, M.O. Sunday, B. Temime-Roussel, X. Tian, J. Wu, and Y. Yang, Overview of the Alaskan Layered Pollution And Chemical Analysis (ALPACA) field experiment, 1, 3, 200-222, Env. Sci. and Tech. – Air, doi:10.1021/acsestair.3c00076 (2024). The ALPACA Project Special Issue in ES&T-Air.
75. Zhai, S., J.R. McConnell, N. Chellman, M. Legrand, T. Opel, H. Meyer, L. Jaegle, K. Confer, K. Fujita, X. Wang, and B. Alexander, Anthropogenic Influence on Tropospheric Reactive Bromine since the Pre-industrial: Implications for Ice-core Bromine Trends, 51, e2023GL107733, Geophys. Res. Lett., doi: 10.1029/2023GL107733 (2024). Data.
74. Chan, J., S. Parasurama, R. Atlas, R. Xu, U. Jongebloed, B. Alexander, J. Langehan, J. Thornton, and J. Riffell, Olfaction in the Anthropocene: NO3 negatively impacts floral scent and nocturnal pollination, Science, 383, 607-611, doi: 10.1126/science.adi0858 (2024). UW Press Release. Washington Post. NY Times. KUOW.
2023
73. Jongebloed, U., A.J. Schauer, J. Cole-Dai, C.G. Larrick, W.C. Porter, L. Tashmim, S. Zhai, S. Salimi, S.R. Edouard, L. Geng, and B. Alexander, Industrial-era Decline in Arctic Methanesulfonic Acid is Offset by Increased Biogenic Sulfate Aerosol, 120 (47) e2307587120 PNAS, doi: 10.1073/pnas.230758712 (2023). MSA data. Sulfur isotope data. UW Press Release. Kudos.
72. Zhai, S., W. Swanson, J.R. McConnell, N. Chellman, T. Opel, M. Sigl, H. Meyer, X. Wang, L. Jaegle, J. Stutz, J. Dibb, K. Fujita, and B. Alexander, Implications of Snowpack Reactive Bromine Production for Arctic Ice Core Bromine Preservation, J. Geophys. Res. – Atmospheres, 128 (20), e2023JD039257 doi:10.1029/2023JD039257 (2023). Ice-Core Data. Model Data.
71. Jongebloed, U., A.J. Schauer, S. Hattori, J. Cole-Dai, C.G. Larrick, S. Salimi, S.R. Edouard, L. Geng, and B. Alexander, Quantifying the impact of anthropogenic sulfur emissions on industrial-era Arctic sulfate in a Greenland ice core, 18, 0742020, Environmental Research Letters, doi:10.1088/1748-9326/acdc3d (2023). Data.
70. Chan, Y.-C., L. Jaegle, P. Campuzano-Jost, D. Catling, J. Cole-Dai, V. Furdui, W.A. Jackson, J. Jiminez, D. Kim, A. Wedum, and B. Alexander, Stratospheric gas-phase production alone cannot explain observations of atmospheric perchlorate on Earth, Geophys. Res. Lett., 50, e2023GL102745, doi: 10.1029/2023GL102745 (2023). Model code and data.
69. Jongebloed, U., A.J. Schauer, J. Cole-Dai, C.G. Larrick, R. Wood, T.P. Fischer, S.A. Carn, S. Salimi, S.R. Edouard, S. Zhai, L. Geng, and B. Alexander, Underestimated passive volcanic degassing implies overestimated aerosol forcing, Geophys. Res. Lett., 50 (1), e22GL102061, doi: 10.1019/2022GL102061 (2023). Data. Press: UW Press Release, NewScientist, KUOW Soundside (among others)
2022
68. Swanson, W.F., C.D. Holmes, W.R. Simpson, K. Confer, L. Marelle, J.L. Thomas, L. Jaegle, B. Alexander, S. Zhai, Q. Chen, X. Wang, and T. Sherwen, Comparison of model and ground observations finds snowpack and blowing snow both contribute to Arctic troposphere reactive bromine, Atmos. Chem. Phys., 22, 14467-14488, https://doi.org/10.5164-acp-22-14467-2022 (2022).
67. Cao, Y., Z. Jiang, B. Alexander, J. Cole-Dai, J. Savarino, J. Erbland, and L. Geng, On the fingerprint of the Antarctica ozone hole in ice-core nitrate isotopes: A case study based on a South Pole ice core, Atmos. Chem. Phys., 22, 13407-13422, https://doi.org/10.5164/acp-22-13407-2022 (2022).
66. Jiang, Z., J. Savarino, B. Alexander, J. Erbland, J.-L. Jaffrezo, and L. Geng, Atmospheric and snow nitrate isotope systematics at Summit, Greenland: the reality of the post-depositional effect, The Cryosphere, 16, 2709-2724, https://doi.org/10.5194/tc-16-2709-2022 (2022).
65. Wang, M., Q. Fu, S. Solomon, B. Alexander, and R. White, Stratosphere-troposphere exchanges of air mass and ozone concentration in the Last Glacial Maximum, J. Geophys. Res., 127, e2021JD036327, doi: 10.1029/2021JD036327 (2022).
64. He, P., B. Alexander, K. Hui, and Z. Xie, Isotopic constraints on the formation mechanisms of sulfate aerosols in the summer Arctic marine boundary layer, J. Geophys. Res., 127 (7), e2022JD036601, doi:10.1029/2022JD036601 (2022).
63. Kirpes, R.M., Z. Lei, M. Fraund, M.J. Gunsch, N.W. May, T.E. Barrett, C.E. Moffett, A. Schauer, B. Alexander, L.M. Upchurch, S. China, P.K. Quinn, R.C. Moffet, A. Laskin, R.J. Sheesley, K.A. Pratt, and A.P. Ault, Solid Organic-coated Ammonium Sulfate Particles at High Relative Humidity in the Summertime Arctic Atmosphere, PNAS, doi: 10.1073/pnas.2104496119 (2022).
2021
62. Wang, X., D.J. Jacob, W. Downs, S. Zhai, L. Zhu, V. Shah, C.D. Holmes, T. Sherwen, B. Alexander, M.J. Evans, S.D. Eastham, J.A. Neuman, P. Veres, T.K. Koenig, R. Volkamer, L.G. Huey, T.J. Bannan, C.J. Percival, B.H. Lee, and J.A. Thornton, Global tropospheric halogen (Cl, Br, I) chemistry and its impact on oxidants, Atmos. Chem. Phys., 21, 13973-13996, doi:10.5194/acp-21-13973-2021 (2021).
61. Tilgner, Andreas, Thomas Schaefer, Becky Alexander, Mary Barth, Jeffrey L. Collett, Jr., Kathleen M. Fahey, Athanasios Nenes, Havala O. T. Pye, Hartmut Herrmann, and V. Faye McNeill, Acidity and the multiphase chemistry of atmospheric aqueous particles and clouds, Atmos. Chem. Phys., 21, 13483-13536, https://doi.org/10.5194/acp-21-13483-2021 (2021).
60. Jiang, Z., B. Alexander, J. Savarino, J. Erbland, and L. Geng, Impacts of the photo-driven post-depositional processing on snow nitrate and its isotopes at Summit, Greenland: a model-based study, The Cryosphere, 15, 4207-4220 (2021).
59. Zhai, S., X. Wang, J.R. McConnell, L. Geng, J. Cole-Dai, N. Chellman, T. Sherwen, R. Pound, K. Fujita, S. Hattori, J.M. Moch, L. Zhu, M.J. Evans, M. Legrand, P. Liu, D. Pasteris, Y.-C. Chan, L.T. Murray, and Becky Alexander, Anthropogenic impacts on tropospheric reactive chlorine since the preindustrial, Geophys. Res. Lett. 48 (14), e2021GL093808, doi: 10.1029/2021GL093808 (2021). Ice-Core Data. Model Data.
58. Wang, K., S. Hattori, M. Lin, S. Ishino, B. Alexander, K. Kamezaki, N. Yoshida, and S. Kang, Isotopic constraints on atmospheric sulfate formation pathways in the Mt. Everest region, southern Tibetan Plateau, Atmos. Chem. Phys., 21, doi: 10.5194/acp-21-8357-2021 (2021).
57. Hattori, S., Y. Iizuka, B. Alexander, S. Ishino, K. Fujita, S. Zhai, T. Sherwen, N. Oshima, R. Uemura, A. Yamada, N. Suzuki, S. Matoba, A. Tsuruta, J. Savarino, and N. Yoshida, Isotopic evidence for acidity-driven enhancement of sulfate formation after SO2 emission control, Science Adv., 7(19), eabd4610, doi:10.1126/sciadv.abd4610 (2021). UW press release.
56. Chan, Y.C., M.J. Evans, P. He, C.D. Holmes, L. Jaegle, P. Kasibhatla, X.-Y. Liu, T. Sherwen, J.A. Thornton, X. Wang, Z. Xie, S. Zhai, and B. Alexander, Heterogeneous nitrate production mechanisms in intense haze events in North China, J. Geophys. Res., e2021JD034688, doi:10.1029/2021JD034688 (2021).
55. Winski, D., E. Osterberg, K. Kreutz, D. Ferris, J. Cole-Dai, Z. Thundercloud, J. Huang, B. Alexander, L. Jaegle, j. Kennedy, C. Larrick, E. Kahle, E. Steig, and T. Jones, Seasonally-resolved Holocene sea ice variability inferred from South Pole ice core chemistry, Geophys. Res. Lett., 48(8), E2020GL091602, doi:10.2029/2020GL091602 (2021).
54. Ishino, S., S. Hattori, M. Legrand, Q. Chen, B. Alexander, J. Shao, J. Huang, L. Jaegle, B. Jourdain, S. Preunkert, A. Yamada, N. Yoshida, and J. Savarino, Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17O-excess signature, J. Geophys. Res., e2020JD033583, doi:10.1029/JD033583 (2021).
2020
53. Wang, M. Q. Fu, S. Solomon, R. White and B. Alexander, Stratospheric ozone in the Last Glacial Maximum, J. Geophys. Res., 215 (21), e202JD032929, https://doi.org/10.1029/2020JD032929 (2020).
52. Fu, Q., M. Wang, R.H. White, H. Pahlavan, B. Alexander, and J.M. Wallace, Quasi-biennial oscillation and sudden stratospheric warmings during the last glacial maximum, Atmospheres, https://doi.org/10.3390/atmos11090943 (2020).
51. Moch, Jonathan M., Eleni Dovrou, Loretta J. Mickley, Frank N. Keutsch, Zirui Liu, Yuesi Wang, Tracy L. Dombek, Mikinori Kuwata, SriSri Hapsari Budisulistiorini, Liudongqing Yang, Stefano Decesari, Marco Paglione, Becky Alexander, Jingyuan Shao, J. William Munger, Daniel J. Jacob, Global importance of hydroxymethanesulfonate in ambient particulate matter: Implications for air quality, J. Geophys. Res. Atmospheres, 125 (8), e2020JD032706, https://doi.org/10.1029/2020JD032706 (2020).
50. Huang, J.; L. Jaegle, Q. Chen, B. Alexander, T. Sherwen, M. Evans, N. Theys, and S. Choi, Evaluating the impact of blowing snow sea salt aerosol on springtime BrO and O3 in the Arctic, Atmos. Chem. Phys., 20, 7335-7358, doi:10.5194/acp-20-7335-2020 (2020).
49. Pye, Havala; Athanasios Nenes, Becky Alexander, Andrew Ault, Mary Barth, Simon Clegg, Jeffrey Collett, Kathleen Fahey, Christopher Hennigan, Hartmut Herrmann, Maria Kanakidou, James Kelly, I-Ting Ku, V. Faye McNeill, Nicole Riemer, Thomas Schaefer, Guoliang Shi, Andreas Tilgner, John Walker, Tao Wang, Rodney Weber, Jia Xing, Rahul Zaveri, and Andreas Zuend, The Acidity of Atmospheric Particles and Clouds, Atmos. Chem. Phys., 20, 4809-4888, doi:10.5194/acp-20-4809-2020 (2020).
48. Alexander, B., T. Sherwen, C.D. Holmes, J.A. Fisher, Q. Chen, M.J. Evans, and P. Kasibhatla, Global inorganic nitrate production mechanisms: Comparison of a global model with nitrate isotope observations, Atmos. Chem. Phys., 20, 3859-3877, https://doi.org/10.5194/acp-20-3859-2020 (2020).
47. Fu, Q., R.White, M. Wang, B. Alexander, S. Solomon, A. Gettelman, D. Battisti, and P. Lin, The Brewer-Dobson Circulation during the Last Glacial Maximum, Geophys. Res. Lett., 47, e2019GL086271, https://doi.org/10.1029/2019GL086271 (2020).
46. Horowitz, H.; C.D. Holmes; A. Wright; T. Sherwen, M. Evans; J. Huang, L. Jaeglé, Q. Chen; and B. Alexander, Effects of sea salt aerosol emissions for Marine Cloud Brightening on atmospheric chemistry: Implications for radiative forcing, Geophys. Res. Lett., 47, e2019GL085838, https://doi.org/10.1029/2019GL085838 (2020). Among GRL’s top 10% most downloaded papers in 2020!
2019
45. Walters, W.W., G. Michalski, J.K. Bohlke, B. Alexander, J. Savarino, and M.H. Thiemens, Assessing the seasonal dynamics of nitrate and sulfate aerosols at the South Pole utilizing stable isotopes, J. Geophys. Res. Atmospheres, 124, doi:10.1029/2019JD030517 (2019).
44. Zhu, L., Jacob, D.J., Eastham, S.D. Sulprizio, M.P., Wang, X., Sherwen, T., Evans, M.J., Chen, Q., Alexander, B., Koenig, T.K., Volkamer, R., Huey, L.G., Le Breton, M., and Percival, C.J., Effect of sea-salt aerosol on tropospheric bromine chemistry, Atmos. Chem. Phys., 19, 6497-6507, doi:10.5194/acp-19-6497-2019 (2019).
43. Shao, J., Q. Chen, Y. Wang, X. Lu, P. He, Y. Sun, V. Shah, R.V. Martin, S. Philip, S. Song, Z. Xie, L. Zhang, and B. Alexander, Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: Air quality model assessment using observations of oxygen isotopes in Beijing, Atmos. Chem. Phys., 19, 6107-6123, doi:10.5194/acp-19-6107-2019, 2019. Highlighted in ACP.
42. Wang, X., Daniel Jacob, Sebastian Eastham, Melissa Sulprizio, Lei Zhu, Qianjie Chen, Becky Alexander, Tomas Sherwen, Mathew Evans, Ben Lee, Jessica Haskins, Felipe Lopez-Hilfiker, Joel Thornton, Gregory Huey, and Hong Liao, The role of chlorine in tropospheric chemistry, Atmos. Chem. Phys., 19, 3981-4003, doi:10.5194/acp-19-3981-2019 (2019).
2018
41. Chen, Q., Tomás Sherwen, Mathew Evans, and Becky Alexander, DMS oxidation and sulfur aerosol formation in the marine troposphere: a focus on reactive halogen and multiphase chemistry, Atmos. Chem. Phys., 18, 13617-13637, doi: 10.5194/acp-18-13617-2018 (2018).
40. Kasibhatla, P., T. Sherwen, M.J. Evans, L.J. Carpenter, C. Reed, B. Alexander, Q. Chen, M. Sulprizio, J.D. Lee, K.A. Read, W. Bloss, L.R. Crilley, W.C. Keene, A.A.P. Pzenny and A. Hodzic, Global impact of nitrate photolysis of sea-salt aerosol on NOx, OH and ozone in the marine boundary layer, Atmos. Chem. Phys., 18, 11185-11203, doi: 10.5194/acp-18-11185-2018 (2018).
39. He, P., B. Alexander, L. Geng, X. Chi, S. Fan, H. Zhan, H. Kang, G. Zheng, Y. Cheng, H. Su, C. Liu and Z. Xie, Isotopic constraints on heterogeneous sulfate production in Beijing haze, Atmospheric Chemistry and Physics, 18, 5515-5528, doi: 10.5194/acp-18-5515-2018 (2018).
2017
38. Chen, Q., J.A. Schmidt, V. Shah, L. Jaeglé, T. Sherwen and B. Alexander, Sulfate production by reactive bromine: Implications for the global sulfur and reactive bromine budgets, Geophys. Res. Lett., 44 (13), 7069-7078, doi: 10.1002/2017GL073812 (2017).
37. Geng, L., L.T. Murray, L.J. Mickley, P. Lin, Q. Fu, A.J. Schauer, and B. Alexander, Isotopic evidence of multiple controls on atmospheric oxidants over climate transitions, Nature, 546, 133-136, doi:10.1038/nature22340 (2017). (Also see News and Views by Hegglin, M.I., The self-cleansing ability of prehistoric air, Nature, 543, 41-42, 2017.)
2016
36. Zatko, M.C., J. Erbland, J. Savarino, Lei Geng, L. Easley, A,J. Schauer, T. Bates, P.K. Quinn, B. Light, D. Morison, H.D. Osthoff, S. Lyman, W. Neff, B. Yuan and B. Alexander, The magnitude of the snow-sourced reactive nitrogen flux to the boundary layer in the Uintah Basin, Utah, USA, Atmos. Chem. Phys., 16, 13837-13851, doi:10.5194/acp-16-13837 (2016).
35. Chen, Q, L. Geng, J. Schmidt, Z. Xie, H. Kang, J. Dachs, J. Cole-Dai, A.J. Schauer, M. Camp, and B. Alexander, Isotopic constraints on the role of hypohalous acids in sulfate aerosol formation in the remote marine boundary layer, Atmos. Chem. Phys., 16, 11433-11450, doi:10.5194/acp-16-11433-2016 (2016).
34. Zatko, M.C., L. Geng, B. Alexander, E.D. Sofen and K. Klein, The impact of snow nitrate photolysis on boundary layer chemistry and the recycling and redistribution of reactive nitrogen across Antarctica and Greenland in a global chemical transport model, Atmos. Chem. Phys., 16, 2819-2842, doi:10.5194/acp-16-2819-2016 (2016).
2015
33. Achakulwisut, P., L.J. Mickley, L.T. Murray, A.P.K. Tai, J.O. Kaplan and B. Alexander, Uncertainties in isoprene photochemistry and emissions: Implications for the oxidative capacity of past and present atmospheres and for trends in climate forcing agents, Atmos. Chem. Phys., 15, 7977-7998, doi:10.5194/acp-15-7977-2015 (2015).
32. Geng, L., M.C. Zatko, B. Alexander, T.J. Fudge, A.J. Schauer, L.T. Murray and L.J. Mickley, Effects of post-depositional processing on nitrogen isotopes of nitrate in the Greenland Ice Sheet Project 2 (GISP 2) ice core, Geophys. Res. Lett., 42, 5346-5354, DOI: 10.1002/2015GL064218 (2015).
31. Alexander, B. and L.J. Mickley, Paleo-perspectives on potential future changes in the oxidative capacity of the atmosphere due to climate change and anthropogenic emissions, Curr. Pollution Rep., 1 (2), 57-69, doi:10.1007/s40726-015-0006-0 (2015).
2014
30. Geng, L., J.H. Cole-Dai, B. Alexander, J. Savarino, A.J. Schauer, E.J. Steig, P. Lin, Q. Fu and M.C. Zatko, On the origin of the occasional springtime nitrate concentration maximum in Greenland snow, Atmos. Chem. Phys., 14, 13361-13376, doi:10.5194/acp-14-13361-2014 (2014).
29. Sofen, E.D., B. Alexander, E.J. Steig, M.H. Thiemens, S.A. Kunasek, H.M. Amos, A.J. Schauer, M.G. Hastings, J. Bautista, T.L. Jackson, L.E. Vogel, J.R. McConnell, D.R. Pasteris, and E.S. Saltzman, WAIS Divide ice core suggests sustained changes in the atmospheric formation pathways of sulfate and nitrate since the 19th century in the extratropical Southern Hemisphere, Atmos. Chem. Phys., 14, 5749-5769, doi:10.5194/acp-14-5749-2014 (2014).
28. Breider, T., L.J. Mickley, D.J. Jacob, Q. Wang, J. Fisher, R. Chang, and B. Alexander, Annual distributions and sources of Arctic aerosol components, aerosol optical depth, and aerosol absorption, J. Geophys. Res., 119, doi:10.1002/2013JD020996 (2014).
27. Murray, L.T., L.J. Mickley, J.O. Kaplan, E.D. Sofen, M. Pfeiffer, and B. Alexander, Factors controlling variability in the oxidative capacity of the troposphere since the Last Glacial Maximum, Atmos. Chem. Phys., 14, 3589-3622, doi:10.5194/acp-14-3589-2014 (2014).
26. Geng, L., B. Alexander, J. Cole-Dai, E.J. Steig, J. Savarino, E.D. Sofen and A.J. Schauer, Nitrogen isotopes in ice core nitrate linked to anthropogenic atmospheric acidity change, Proc. Nat. Acad. Sci., 111 (16), 5808-5812, doi:10.1073/pnas.1319441111 (2014). Highlighted in this issue of PNAS (page 5755).
25. Lee, H.-M., D.K. Henze, B. Alexander and L.T. Murray, Investigating the sensitivity of surface-level nitrate seasonality in Antarctica to primary sources using a global model, Atm. Env., 89, 757-767, doi: 10.1016/j.atmosenv.2014.03.003 (2014).
2013
24. Geng, L., A.J. Schauer, S.A. Kunasek, E.D. Sofen, J. Erbland, J. Savarino, D.J. Allman, R.S. Sletten, and B. Alexander (2013), Analysis of oxygen-17 excess of nitrate and sulfate at sub-micromole levels using the pyrolysis method, Rapid Comm. Mass Spectrom., 27: 2411-2419. doi:10.1002/rcm.6703
23. Zatko, M.C., T.C. Grenfell, B. Alexander, S.J. Doherty, J.L. Thomas and X. Yang, The influence of snow grain size and impurities on the vertical profiles of actinic flux and associated NOx emissions on the Antarctic and Greenland ice sheets, Atmos. Chem. Phys. 13, 3547-3567, doi:10.5194/acp-13-3547-2013 (2013).
22. Savarino, J., S. Morin, J. Erbland, F. Grannec, M. Patey, W. Vicars, B. Alexander and E.P. Achterberg, Isotopic composition of atmospheric nitrate in a tropical marine boundary layer, PNAS (published ahead of print), doi:10.1073/pnas.1216639110 (2013).
2012
21. Schauer, A.J., S.A. Kunasek, E.D. Sofen, J. Erbland, J. Savarino, B. Johnson, H.M. Amos, T.L. Jackson, M.H. Thiemens, and B. Alexander, Oxygen isotope exchange with quartz during pyrolysis of silver sulfate and silver nitrate, Rapid Commun. Mass Spectrom. 26 (18), 2151-2157, doi:10.1002/rcm.6332 (2012).
20. Alexander, B., D.J. Allman, H.M. Amos, T.D. Fairlie, J. Dachs, D.A. Hegg and R.S. Sletten, Isotopic constraints on sulfate aerosol formation pathways in the marine boundary layer of the subtropical northeast Atlantic Ocean, J. Geophys. Res., 117, D06304, doi:10.1029/2011JD016773 (2012).
2011
19. Hezel, P.J, B. Alexander, C.M. Bitz, E.J. Steig, C.D. Holmes, X. Yang and J. Sciare, Modeled methanesulfonic acid (MSA) deposition in Antarctica and its relationship to sea ice, J. Geophys. Res. 116, D23214, doi:10.1029/2011JF016383 (2011).
18. Costa, A.J., G. Michalski, A.J.Schauer, B. Alexander, Steig, E.J. and Shepson, P.B., Analysis of atmospheric inputs of nitrate to a temperate forest ecosystem from Δ17O isotope ratio measurements, Geophys. Res. Lett, 38, L15805, doi:10.1029/2011GL047539 (2011).
17. Sofen, E.D., B. Alexander, and S.A. Kunasek, The impact of anthropogenic emissions on atmospheric sulfate production pathways, oxidants, and ice core Δ17O(SO42-), Atmos. Chem. Phys., 11, 3565-3578, doi:10.5194/acp-11-3565-2011 (2011).
16. Jaeglé, L., Quinn, P. K., Bates, T., Alexander, B., and Lin, J.-T.: Global distribution of sea salt aerosols: new constraints from in situ and remote sensing observations, Atmos. Chem. Phys., 11, 3137-3157, doi:10.5194/acp-11-3137-2011 (2011).
15. Gray, B., Y. Wang, D. Gu, A. Bandy, L. Mauldin, A. Clarke, B. Alexander and D.D. Davis, Sources, transport and sinks of SO2 over the equatorial Pacific during the Pacific Atmospheric Sulfur Experiment, J. Atmos. Chem, 68 (1), 27-53, doi: 10.1007/s10874-010-9177-7 (2011). From the issue entitled “Special Issue: The Pacific Atmosphere Sulfur Experiment (PASE)”
2010
14. Kunasek, S.A., B. Alexander, E.J. Steig, E.D. Sofen, T.L. Jackson, M.H. Thiemens, J.R. McConnel, D.J. Gleason, H.M. Amos, Sulfate sources and oxidation chemistry over the past ~230 years from sulfur and oxygen isotopes of sulfate in a West Antarctic ice core, J. Geophys. Res., 115, D18313, doi:10.1029/2010JD013846 (2010). Highlighted in Eos Vol. 91, No. 49, 7 December 2010 “Research Spotlight”
13. Thornton, J.A., J.P. Kercher, T.P. Riedel, N.L. Wagner, J. Cozic, J.S. Holloway, W.P. Dubé, G.M. Wolfe, P.K. Quinn, A.M. Middlebrook, B. Alexander, and S.S. Brown, A large atomic chlorine source inferred from mid-continental reactive nitrogen chemistry, Nature, 464, doi:10.1038/nature08905 (2010).
12. Fairlie, T.D., D.J. Jacob, J.E. Dibb, B. Alexander, M.A. Avery, A. van Donkelaar, and L. Zhang, Impact of mineral dust on nitrate, sulfate and ozone in transpacific Asian pollution plumes, Atmos. Chem. Phys., 10, 3999-4012 (2010).
2009
11. Alexander, B., M.G. Hastings, D.J. Allman, J. Dachs,, J.A. Thornton, and S.A. Kunasek, Quantifying atmospheric nitrate formation pathways based on a global model of the oxygen isotopic composition of atmospheric nitrate, Atmos. Chem. Phys., 9, 5043-5056 (2009).
10. Alexander, B., Park, R.J., Jacob, D.J., and Gong, S., Transition metal catalyzed oxidation of atmospheric sulfur: Global implications for the sulfur budget, J. Geophys. Res. 114, D02309 (2009).
Prior to 2009
9. Kunasek, S.A., Alexander, B., E.J. Steig, M.G. Hastings, D.J. Gleason and J.C. Jarvis, Measurements and modeling of Δ17O of nitrate in snowpits from Summit, Greenland, J. Geophys. Res., 113, D24302 (2008).
8. Heald, C.L., Jacob, D.J., Park, R.J., Alexander, B., Fairlie, T.D., Chu, D.A., Yantosca, R.M., Transpacific transport of Asian anthropogenic aerosols and its impact on surface air quality in the United States, J. Geophys. Res., 111, D14310 (2006).
7. McCabe, J.R., Savarino, J., Alexander, B., Gong, S., and Thiemens, M.H., Isotopic constraint on non-photochemical sulfate production in the Arctic winter, Geophys. Res. Lett., 33, L05810 (2006).
6. Alexander, B., Savarino, J., Lee, C.C.W., Park, R.J., Jacob, D.J., Li, Q., Thiemens, M.H., Yantosca, R.M., Sulfate formation in sea-salt aerosols: Constraints from oxygen isotopes, J. Geophys. Res. 110, D1030 (2005).
5. Alexander, B., Savarino, J., Kreutz, K., and Thiemens, M.H., Impact of preindustrial biomass burning emissions on the oxidation pathways of tropospheric sulfur and nitrogen, J. Geophys. Res., 109, D08303 (2004). Also see: Andreae, M.O., “Atmospheric Chemistry: Fire and Ice”, Nature, 429, 713 (2004).
4. Alexander, B., Farquhar, J., Kaufman, A.J., Savarino, J, Delmas, R.J., and Thiemens, M.H., East Antarctic ice core sulfur isotope measurements over a complete glacial-interglacial cycle, J. Geophys. Res., 108(D24), 4786 (2003).
3. Alexander, B., Savarino, J., Thiemens, M.H., and Delmas, R., “Climate driven changes of the oxidation pathways of atmospheric sulfur,” Geophys. Res. Lett., 29(14), 30 (2002).
2. Alexander, B., Vollmer, M.K., Jackson, T., Weiss, R.F., Thiemens, M.H., “Stratospheric CO2 isotopic anomalies and SF6 and CFC tracer concentrations in the Arctic polar vortex,” Geopys. Res. Lett, 28(21), 4103 (2001).
1. Savarino, J., Alexander, B., Darmohusodo, Vincent, Thiemens, M.H., “Sulfur and oxygen isotope analysis of sulfate at micromole levels using a pyrolysis technique in a continuous flow system”, Analytical Chemistry 73(18), 4457 (2001).