Articles | Volume 21, issue 17
https://doi.org/10.5194/acp-21-13287-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-13287-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Sep 2021
Research article |
| 08 Sep 2021
| 08 Sep 2021
Dynamics of gaseous oxidized mercury at Villum Research Station during the High Arctic summer
Department of Environmental Science, iClimate, Arctic Research Center,
Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
Bjarne Jensen
Department of Environmental Science, iClimate, Arctic Research Center,
Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
Andreas Massling
Department of Environmental Science, iClimate, Arctic Research Center,
Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
Daniel Charles Thomas
Department of Environmental Science, iClimate, Arctic Research Center,
Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
Henrik Skov
Department of Environmental Science, iClimate, Arctic Research Center,
Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
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Future (2015–2050) simulations of the aerosol burdens and their radiative forcing and climate impacts over the Arctic under various emission projections show that although the Arctic aerosol burdens are projected to decrease significantly by 10 to 60 %, regardless of the magnitude of aerosol reductions, surface air temperatures will continue to increase by 1.9–2.6 ℃, while sea-ice extent will continue to decrease, implying reductions of greenhouse gases are necessary to mitigate climate change.
Dimitrios Bousiotis, James Brean, Francis D. Pope, Manuel Dall'Osto, Xavier Querol, Andrés Alastuey, Noemi Perez, Tuukka Petäjä, Andreas Massling, Jacob Klenø Nøjgaard, Claus Nordstrøm, Giorgos Kouvarakis, Stergios Vratolis, Konstantinos Eleftheriadis, Jarkko V. Niemi, Harri Portin, Alfred Wiedensohler, Kay Weinhold, Maik Merkel, Thomas Tuch, and Roy M. Harrison
Atmos. Chem. Phys., 21, 3345–3370, https://doi.org/10.5194/acp-21-3345-2021, https://doi.org/10.5194/acp-21-3345-2021, 2021
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New particle formation events from 16 sites over Europe have been studied, and the influence of meteorological and atmospheric composition variables has been investigated. Some variables, like solar radiation intensity and temperature, have a positive effect on the occurrence of these events, while others have a negative effect, affecting different aspects such as the rate at which particles are formed or grow. This effect varies depending on the site type and magnitude of these variables.
Jakob B. Pernov, Rossana Bossi, Thibaut Lebourgeois, Jacob K. Nøjgaard, Rupert Holzinger, Jens L. Hjorth, and Henrik Skov
Atmos. Chem. Phys., 21, 2895–2916, https://doi.org/10.5194/acp-21-2895-2021, https://doi.org/10.5194/acp-21-2895-2021, 2021
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Volatile organic compounds (VOCs) are an important constituent in the Arctic atmosphere due to their effect on aerosol and ozone formation. However, an understanding of their sources is lacking. This research presents a multiseason high-time-resolution dataset of VOCs in the Arctic and details their temporal characteristics and source apportionment. Four sources were identified: biomass burning, marine cryosphere, background, and Arctic haze.
Xin Yang, Anne-M. Blechschmidt, Kristof Bognar, Audra McClure-Begley, Sara Morris, Irina Petropavlovskikh, Andreas Richter, Henrik Skov, Kimberly Strong, David W. Tarasick, Taneil Uttal, Mika Vestenius, and Xiaoyi Zhao
Atmos. Chem. Phys., 20, 15937–15967, https://doi.org/10.5194/acp-20-15937-2020, https://doi.org/10.5194/acp-20-15937-2020, 2020
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This is a modelling-based study on Arctic surface ozone, with a particular focus on spring ozone depletion events (i.e. with concentrations < 10 ppbv). Model experiments show that model runs with blowing-snow-sourced sea salt aerosols implemented as a source of reactive bromine can reproduce well large-scale ozone depletion events observed in the Arctic. This study supplies modelling evidence of the proposed mechanism of reactive-bromine release from blowing snow on sea ice (Yang et al., 2008).
Henrik Skov, Jens Hjorth, Claus Nordstrøm, Bjarne Jensen, Christel Christoffersen, Maria Bech Poulsen, Jesper Baldtzer Liisberg, David Beddows, Manuel Dall'Osto, and Jesper Heile Christensen
Atmos. Chem. Phys., 20, 13253–13265, https://doi.org/10.5194/acp-20-13253-2020, https://doi.org/10.5194/acp-20-13253-2020, 2020
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Mercury is toxic in all its forms. It bioaccumulates in food webs, is ubiquitous in the atmosphere, and atmospheric transport is an important source for this element in the Arctic. Measurements of gaseous elemental mercury have been carried out at the Villum Research Station at Station Nord in northern Greenland since 1999. The measurements are compared with model results from the Danish Eulerian Hemispheric Model. In this way, the dynamics of mercury are investigated.
Cited articles
AMAP: AMAP Assessment 2011: Mercury in the Arctic, Arctic Monitoring and
Assessment Programme (AMAP), Oslo, Norway, xiv + 193 pp., 2011.
Ambrose, J. L.: Improved methods for signal processing in measurements of
mercury by Tekran® 2537A and 2537B instruments, Atmos. Meas. Tech., 10, 5063–5073, https://doi.org/10.5194/amt-10-5063-2017, 2017.
Andreae, M. O.: Emission of trace gases and aerosols from biomass burning – an updated assessment, Atmos. Chem. Phys., 19, 8523–8546,
https://doi.org/10.5194/acp-19-8523-2019, 2019.
Angot, H., Dastoor, A., De Simone, F., Gårdfeldt, K., Gencarelli, C. N.,
Hedgecock, I. M., Langer, S., Magand, O., Mastromonaco, M. N., Nordstrøm,
C., Pfaffhuber, K. A., Pirrone, N., Ryjkov, A., Selin, N. E., Skov, H., Song, S., Sprovieri, F., Steffen, A., Toyota, K., Travnikov, O., Yang, X., and Dommergue, A.: Chemical cycling and deposition of atmospheric mercury in
polar regions: review of recent measurements and comparison with models,
Atmos. Chem. Phys., 16, 10735–10763, https://doi.org/10.5194/acp-16-10735-2016, 2016.
Ariya, P. A., Dastroor, A. P., Amyot, M., Schroeder, W. H., Barrie, L., Anlauf, K., Raofie, F., Ryzhkov, A., Davignon, D., Lalonde, J., and Steffen,
A.: The Arctic: a sink for mercury, Tellus B, 56, 397–403, https://doi.org/10.3402/tellusb.v56i5.16458, 2004.
Ariya, P. A., Amyot, M., Dastoor, A., Deeds, D., Feinberg, A., Kos, G., Poulain, A., Ryjkov, A., Semeniuk, K., Subir, M., and Toyota, K.: Mercury
physicochemical and biogeochemical transformation in the atmosphere and at
atmospheric interfaces: a review and future directions, Chem. Rev., 115, 3760–3802, https://doi.org/10.1021/cr500667e, 2015.
Arnold, S. R., Emmons, L. K., Monks, S. A., Law, K. S., Ridley, D. A., Turquety, S., Tilmes, S., Thomas, J. L., Bouarar, I., Flemming, J., Huijnen,
V., Mao, J., Duncan, B. N., Steenrod, S., Yoshida, Y., Langner, J., and
Long, Y.: Biomass burning influence on high-latitude tropospheric ozone and
reactive nitrogen in summer 2008: a multi-model analysis based on POLMIP
simulations, Atmos. Chem. Phys., 15, 6047–6068, https://doi.org/10.5194/acp-15-6047-2015, 2015.
Aspmo, K., Temme, C., Berg, T., Ferrari, C., Gauchard, P. A., Fain, X., and
Wibetoe, G.: Mercury in the atmosphere, snow and melt water ponds in the
North Atlantic Ocean during Arctic summer, Environ. Sci. Technol., 40, 4083–4089, https://doi.org/10.1021/es052117z, 2006.
Atkinson, H. M., Hughes, C., Shaw, M. J., Roscoe, H. K., Carpenter, L. J., and Liss, P. S.: Halocarbons associated with Arctic sea ice, Deep-Sea Res. Pt. I, 92, 162–175, https://doi.org/10.1016/j.dsr.2014.05.012, 2014.
Backman, J., Schmeisser, L., Virkkula, A., Ogren, J. A., Asmi, E., Starkweather, S., Sharma, S., Eleftheriadis, K., Uttal, T., Jefferson, A.,
Bergin, M., Makshtas, A., Tunved, P., and Fiebig, M.: On Aethalometer measurement uncertainties and an instrument correction factor for the
Arctic, Atmos. Meas. Tech., 10, 5039–5062, https://doi.org/10.5194/amt-10-5039-2017, 2017.
Berg, T., Sekkesæter, S., Steinnes, E., Valdal, A.-K., and Wibetoe, G.:
Springtime depletion of mercury in the European Arctic as observed at Svalbard, Sci. Total Environ., 304, 43–51, https://doi.org/10.1016/S0048-9697(02)00555-7, 2003.
Bognar, K., Zhao, X., Strong, K., Chang, R. Y.-W., Frieß, U., Hayes, P.
L., McClure-Begley, A., Morris, S., Tremblay, S., and Vicente-Luis, A.: Measurements of Tropospheric Bromine Monoxide Over Four Halogen Activation
Seasons in the Canadian High Arctic, J. Geophys. Res.-Atmos., 125, e2020JD033015, https://doi.org/10.1029/2020jd033015, 2020.
Bolton, D.: The Computation of Equivalent Potential Temperature, Mon. Weather Rev., 108, 1046–1053, https://doi.org/10.1175/1520-0493(1980)108<1046:Tcoept>2.0.Co;2, 1980.
Böttcher, K., Paunu, V.-V., Kupiainen, K., Zhizhin, M., Matveev, A., Savolahti, M., Klimont, Z., Väätäinen, S., Lamberg, H., and
Karvosenoja, N.: Black carbon emissions from flaring in Russia in the period 2012–2017, Atmos. Environ., 254, 118390, https://doi.org/10.1016/j.atmosenv.2021.118390, 2021.
Brooks, I. M., Tjernström, M., Persson, P. O. G., Shupe, M. D., Atkinson, R. A., Canut, G., Birch, C. E., Mauritsen, T., Sedlar, J., and Brooks, B. J.: The Turbulent Structure of the Arctic Summer Boundary Layer During The Arctic Summer Cloud-Ocean Study, J. Geophys. Res.-Atmos., 122, 9685–9704, https://doi.org/10.1002/2017JD027234, 2017.
Brooks, S., Arimoto, R., Lindberg, S., and Southworth, G.: Antarctic polar
plateau snow surface conversion of deposited oxidized mercury to gaseous
elemental mercury with fractional long-term burial, Atmos. Environ., 42, 2877–2884, https://doi.org/10.1016/j.atmosenv.2007.05.029, 2008.
Brooks, S., Moore, C., Lew, D., Lefer, B., Huey, G., and Tanner, D.: Temperature and sunlight controls of mercury oxidation and deposition atop
the Greenland ice sheet, Atmos. Chem. Phys., 11, 8295–8306,
https://doi.org/10.5194/acp-11-8295-2011, 2011.
Brooks, S. B., Saiz-Lopez, A., Skov, H., Lindberg, S. E., Plane, J. M. C., and Goodsite, M. E.: The mass balance of mercury in the springtime arctic
environment, Geophys. Res. Lett., 33, L13812, https://doi.org/10.1029/2005gl025525, 2006.
Browse, J., Carslaw, K. S., Arnold, S. R., Pringle, K., and Boucher, O.: The
scavenging processes controlling the seasonal cycle in Arctic sulphate and
black carbon aerosol, Atmos. Chem. Phys., 12, 6775–6798,
https://doi.org/10.5194/acp-12-6775-2012, 2012.
Burd, J. A., Peterson, P. K., Nghiem, S. V., Perovich, D. K., and Simpson, W. R.: Snowmelt onset hinders bromine monoxide heterogeneous recycling in the Arctic, J. Geophys. Res.-Atmos., 122, 8297–8309, https://doi.org/10.1002/2017jd026906, 2017.
Calvert, J. G. and Lindberg, S. E.: Mechanisms of mercury removal by O3 and OH in the atmosphere, Atmos. Environ., 39, 3355–3367, https://doi.org/10.1016/j.atmosenv.2005.01.055, 2005.
Cavalieri, D. J., Parkinson, C. L., Gloersen, P., and Zwally, H. J.: Sea Ice
Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave
Data, Version 1, https://doi.org/10.5067/8GQ8LZQVL0VL, 1996.
Christensen, J. H., Brandt, J., Frohn, L. M., and Skov, H.: Modelling of Mercury in the Arctic with the Danish Eulerian Hemispheric Model, Atmos. Chem. Phys., 4, 2251–2257, https://doi.org/10.5194/acp-4-2251-2004, 2004.
Cole, A. S. and Steffen, A.: Trends in long-term gaseous mercury observations in the Arctic and effects of temperature and other atmospheric conditions, Atmos. Chem. Phys., 10, 4661–4672, https://doi.org/10.5194/acp-10-4661-2010, 2010.
Comiso, J. C.: Large Decadal Decline of the Arctic Multiyear Ice Cover, J. Climate, 25, 1176–1193, https://doi.org/10.1175/jcli-d-11-00113.1, 2012.
Croft, B., Martin, R. V., Leaitch, W. R., Tunved, P., Breider, T. J., D'Andrea, S. D., and Pierce, J. R.: Processes controlling the annual cycle of Arctic aerosol number and size distributions, Atmos. Chem. Phys., 16, 3665–3682, https://doi.org/10.5194/acp-16-3665-2016, 2016.
Dastoor, A. P. and Durnford, D. A.: Arctic Ocean: Is It a Sink or a Source of Atmospheric Mercury?, Environ. Sci. Technol., 48, 1707–1717, https://doi.org/10.1021/es404473e, 2014.
Dastoor, A. P., Davignon, D., Theys, N., Van Roozendael, M., Steffen, A., and Ariya, P. A.: Modeling Dynamic Exchange of Gaseous Elemental Mercury at Polar Sunrise, Environ. Sci. Technol., 42, 5183–5188, https://doi.org/10.1021/es800291w, 2008.
Dibb, J. E., Arsenault, M., Peterson, M. C., and Honrath, R. E.: Fast nitrogen oxide photochemistry in Summit, Greenland snow, Atmos. Environ., 36, 2501–2511, https://doi.org/10.1016/s1352-2310(02)00130-9, 2002.
Dibble, T. S., Zelie, M. J., and Mao, H.: Thermodynamics of reactions of ClHg and BrHg radicals with atmospherically abundant free radicals, Atmos. Chem. Phys., 12, 10271–10279, https://doi.org/10.5194/acp-12-10271-2012, 2012.
DiMento, B. P., Mason, R. P., Brooks, S., and Moore, C.: The impact of sea
ice on the air-sea exchange of mercury in the Arctic Ocean, Deep-Sea Res. Pt. I, 144, 28–38, https://doi.org/10.1016/j.dsr.2018.12.001, 2019.
Donohoue, D. L., Bauer, D., Cossairt, B., and Hynes, A. J.: Temperature and
Pressure Dependent Rate Coefficients for the Reaction of Hg with Br and the
Reaction of Br with Br: A Pulsed Laser Photolysis-Pulsed Laser Induced
Fluorescence Study, J. Phys. Chem. A, 110, 6623–6632,
https://doi.org/10.1021/jp054688j, 2006.
Douglas, T. A. and Blum, J. D.: Mercury Isotopes Reveal Atmospheric Gaseous
Mercury Deposition Directly to the Arctic Coastal Snowpack, Environ. Sci. Technol. Lett., 6, 235–242, https://doi.org/10.1021/acs.estlett.9b00131, 2019.
Douglas, T. A., Sturm, M., Blum, J. D., Polashenski, C., Stuefer, S.,
Hiemstra, C., Steffen, A., Filhol, S., and Prevost, R.: A Pulse of Mercury
and Major Ions in Snowmelt Runoff from a Small Arctic Alaska Watershed,
Environ. Sci. Technol., 51, 11145–11155, https://doi.org/10.1021/acs.est.7b03683, 2017.
Draxler, R. R. and Hess, G. D.: An overview of the HYSPLIT_4 modelling system for trajectories, dispersion and deposition, Aust. Meteorol. Mag., 47, 295–308, 1998.
Drinovec, L., Močnik, G., Zotter, P., Prévôt, A. S. H., Ruckstuhl, C., Coz, E., Rupakheti, M., Sciare, J., Müller, T.,
Wiedensohler, A., and Hansen, A. D. A.: The “dual-spot” Aethalometer: an
improved measurement of aerosol black carbon with real-time loading compensation, Atmos. Meas. Tech., 8, 1965–1979, https://doi.org/10.5194/amt-8-1965-2015, 2015.
Durnford, D. and Dastoor, A.: The behavior of mercury in the cryosphere: A
review of what we know from observations, J. Geophys. Res., 116, D06305, https://doi.org/10.1029/2010jd014809, 2011.
Dusek, U., Reischl, G. P., and Hitzenberger, R.: CCN Activation of Pure and
Coated Carbon Black Particles, Environ. Sci. Technol., 40, 1223–1230, https://doi.org/10.1021/es0503478, 2006.
Faïn, X., Obrist, D., Hallar, A. G., McCubbin, I., and Rahn, T.: High
levels of reactive gaseous mercury observed at a high elevation research
laboratory in the Rocky Mountains, Atmos. Chem. Phys., 9, 8049–8060,
https://doi.org/10.5194/acp-9-8049-2009, 2009.
Flannigan, M., Stocks, B., Turetsky, M., and Wotton, M.: Impacts of climate
change on fire activity and fire management in the circumboreal forest, Global Change Biol., 15, 549–560, https://doi.org/10.1111/j.1365-2486.2008.01660.x, 2009.
Freud, E., Krejci, R., Tunved, P., Leaitch, R., Nguyen, Q. T., Massling, A.,
Skov, H., and Barrie, L.: Pan-Arctic aerosol number size distributions:
seasonality and transport patterns, Atmos. Chem. Phys., 17, 8101–8128,
https://doi.org/10.5194/acp-17-8101-2017, 2017.
Frey, M. M., Norris, S. J., Brooks, I. M., Anderson, P. S., Nishimura, K.,
Yang, X., Jones, A. E., Nerentorp Mastromonaco, M. G., Jones, D. H., and Wolff, E. W.: First direct observation of sea salt aerosol production from
blowing snow above sea ice, Atmos. Chem. Phys., 20, 2549–2578,
https://doi.org/10.5194/acp-20-2549-2020, 2020.
Friedli, H. R., Radke, L. F., Lu, J. Y., Banic, C. M., Leaitch, W. R., and
MacPherson, J. I.: Mercury emissions from burning of biomass from temperate
North American forests: laboratory and airborne measurements, Atmos. Environ., 37, 253–267, https://doi.org/10.1016/S1352-2310(02)00819-1, 2003.
Friedli, H. R., Arellano, A. F., Cinnirella, S., and Pirrone, N.: Initial
Estimates of Mercury Emissions to the Atmosphere from Global Biomass Burning, Environ. Sci. Technol., 43, 3507–3513, https://doi.org/10.1021/es802703g, 2009.
Fu, X., Marusczak, N., Heimbürger, L. E., Sauvage, B., Gheusi, F., Prestbo, E. M., and Sonke, J. E.: Atmospheric mercury speciation dynamics at
the high-altitude Pic du Midi Observatory, southern France, Atmos. Chem.
Phys., 16, 5623–5639, https://doi.org/10.5194/acp-16-5623-2016, 2016.
Giordano, M. R., Kalnajs, L. E., Goetz, J. D., Avery, A. M., Katz, E., May, N. W., Leemon, A., Mattson, C., Pratt, K. A., and DeCarlo, P. F.: The importance of blowing snow to halogen-containing aerosol in coastal Antarctica: influence of source region versus wind speed, Atmos. Chem.
Phys., 18, 16689–16711, https://doi.org/10.5194/acp-18-16689-2018, 2018.
Goodsite, M. E., Plane, J. M. C., and Skov, H.: A theoretical study of the
oxidation of Hg0 to HgBr2 in the troposphere, Environ. Sci. Technol., 38, 1772–1776, https://doi.org/10.1021/es034680s, 2004.
Goodsite, M. E., Plane, J. M. C., and Skov, H.: Correction to A Theoretical
Study of the Oxidation of Hg0 to HgBr2 in the Troposphere, Environ. Sci. Technol., 46, 5262–5262, https://doi.org/10.1021/es301201c, 2012.
Gratz, L. E., Ambrose, J. L., Jaffe, D. A., Shah, V., Jaegle, L., Stutz, J.,
Festa, J., Spolaor, M., Tsai, C., Selin, N. E., Song, S., Zhou, X., Weinheimer, A. J., Knapp, D. J., Montzka, D. D., Flocke, F. M., Campos, T.
L., Apel, E., Hornbrook, R., Blake, N. J., Hall, S., Tyndall, G. S., Reeves,
M., Stechman, D., and Stell, M.: Oxidation of mercury by bromine in the
subtropical Pacific free troposphere, Geophys. Res. Lett., 42, 10494–10502, https://doi.org/10.1002/2015gl066645, 2015.
Greene, C. A.: Arctic Sea ice, available at: https://www.mathworks.com/matlabcentral/fileexchange/56923-arctic-sea-ice,
last access: 26 January 2020.
Greene, C. A., Gwyther, D. E., and Blankenship, D. D.: Antarctic Mapping Tools for MATLAB, Comput. Geosci., 104, 151–157, https://doi.org/10.1016/j.cageo.2016.08.003, 2017.
Gustin, M. S., Amos, H. M., Huang, J., Miller, M. B., and Heidecorn, K.:
Measuring and modeling mercury in the atmosphere: a critical review, Atmos.
Chem. Phys., 15, 5697–5713, https://doi.org/10.5194/acp-15-5697-2015, 2015.
Gustin, M. S., Dunham-Cheatham, S. M., Huang, J., Lindberg, S., and Lyman, S. N.: Development of an Understanding of Reactive Mercury in Ambient Air: A
Review, Atmosphere, 12, 73, https://doi.org/10.3390/atmos12010073, 2021.
Halfacre, J. W., Shepson, P. B., and Pratt, K. A.: pH-dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces, Atmos. Chem. Phys., 19, 4917–4931, https://doi.org/10.5194/acp-19-4917-2019, 2019.
Hara, K., Osada, K., Yabuki, M., Takashima, H., Theys, N., and Yamanouchi, T.: Important contributions of sea-salt aerosols to atmospheric bromine cycle in the Antarctic coasts, Scient. Rep., 8, 13852, https://doi.org/10.1038/s41598-018-32287-4, 2018.
Helmig, D., Oltmans, S. J., Carlson, D., Lamarque, J.-F., Jones, A., Labuschagne, C., Anlauf, K., and Hayden, K.: A review of surface ozone in the polar regions, Atmos. Environ., 41, 5138–5161, https://doi.org/10.1016/j.atmosenv.2006.09.053, 2007.
Hirdman, D., Aspmo, K., Burkhart, J. F., Eckhardt, S., Sodemann, H., and Stohl, A.: Transport of mercury in the Arctic atmosphere: Evidence for a spring-time net sink and summer-time source, Geophys. Res. Lett., 36, L12814, https://doi.org/10.1029/2009gl038345, 2009.
Holmes, C. D., Jacob, D. J., and Yang, X.: Global lifetime of elemental mercury against oxidation by atomic bromine in the free troposphere, Geophys. Res. Lett., 33, L20808, https://doi.org/10.1029/2006gl027176, 2006.
Holmes, C. D., Jacob, D. J., Corbitt, E. S., Mao, J., Yang, X., Talbot, R., and Slemr, F.: Global atmospheric model for mercury including oxidation by
bromine atoms, Atmos. Chem. Phys., 10, 12037–12057, https://doi.org/10.5194/acp-10-12037-2010, 2010.
Horowitz, H. M., Jacob, D. J., Zhang, Y., Dibble, T. S., Slemr, F., Amos, H.
M., Schmidt, J. A., Corbitt, E. S., Marais, E. A., and Sunderland, E. M.: A
new mechanism for atmospheric mercury redox chemistry: implications for the
global mercury budget, Atmos. Chem. Phys., 17, 6353–6371,
https://doi.org/10.5194/acp-17-6353-2017, 2017.
Huang, J. and Gustin, M. S.: Uncertainties of Gaseous Oxidized Mercury Measurements Using KCl-Coated Denuders, Cation-Exchange Membranes, and Nylon
Membranes: Humidity Influences, Environ. Sci. Technol., 49, 6102–6108, https://doi.org/10.1021/acs.est.5b00098, 2015.
Huang, J., Miller, M. B., Edgerton, E., and Sexauer Gustin, M.: Deciphering
potential chemical compounds of gaseous oxidized mercury in Florida, USA,
Atmos. Chem. Phys., 17, 1689–1698, https://doi.org/10.5194/acp-17-1689-2017, 2017.
Huang, K., Fu, J. S., Prikhodko, V. Y., Storey, J. M., Romanov, A., Hodson,
E. L., Cresko, J., Morozova, I., Ignatieva, Y., and Cabaniss, J.: Russian
anthropogenic black carbon: Emission reconstruction and Arctic black carbon
simulation, J. Geophys. Res.-Atmos., 120, 11306–11333, https://doi.org/10.1002/2015JD023358, 2015.
Hynes, A. J., Donohoue, D. L., Goodsite, M. E., and Hedgecock, I. M.: Our
current understanding of major chemical and physical processes affecting mercury dynamics in the atmosphere and at the air-water/terrestrial interfaces, in: Mercury Fate and Transport in the Global Atmosphere: Emissions, Measurements and Models, edited by: Mason, R. and Pirrone, N.,
Springer US, Boston, MA, 427–457, 2009.
Igel, A. L., Ekman, A. M. L., Leck, C., Tjernström, M., Savre, J., and
Sedlar, J.: The free troposphere as a potential source of arctic boundary layer aerosol particles, Geophys. Res. Lett., 44, 7053–7060,
https://doi.org/10.1002/2017gl073808, 2017.
Jacob, D. J., Crawford, J. H., Maring, H., Clarke, A. D., Dibb, J. E., Emmons, L. K., Ferrare, R. A., Hostetler, C. A., Russell, P. B., Singh, H.
B., Thompson, A. M., Shaw, G. E., McCauley, E., Pederson, J. R., and Fisher, J. A.: The Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission: design, execution, and first results, Atmos. Chem. Phys., 10, 5191–5212, https://doi.org/10.5194/acp-10-5191-2010, 2010.
Jiang, S., Ye, A., and Xiao, C.: The temperature increase in Greenland has
accelerated in the past five years, Global Planet. Change, 194, 103297, https://doi.org/10.1016/j.gloplacha.2020.103297, 2020.
Jiao, Y. and Dibble, T. S.: Quality Structures, Vibrational Frequencies, and Thermochemistry of the Products of Reaction of BrHg with NO2, HO2, ClO, BrO, and IO, J. Phys. Chem. A, 119, 10502–10510,
https://doi.org/10.1021/acs.jpca.5b04889, 2015.
Jiao, Y. and Dibble, T. S.: First kinetic study of the atmospherically important reactions BrHgy+NO2 and BrHgy+HOO, Phys. Chem. Chem. Phys., 19, 1826–1838, https://doi.org/10.1039/C6CP06276H, 2017a.
Jiao, Y. and Dibble, T. S.: Structures, Vibrational Frequencies, and Bond Energies of the BrHgOX and BrHgXO Species Formed in Atmospheric Mercury
Depletion Events, J. Phys. Chem. A, 121, 7976–7985,
https://doi.org/10.1021/acs.jpca.7b06829, 2017b.
Jiskra, M., Sonke, J. E., Agnan, Y., Helmig, D., and Obrist, D.: Insights from mercury stable isotopes on terrestrial–atmosphere exchange of Hg(0) in the Arctic tundra, Biogeosciences, 16, 4051–4064, https://doi.org/10.5194/bg-16-4051-2019, 2019.
Kaleschke, L., Richter, A., Burrows, J., Afe, O., Heygster, G., Notholt, J.,
Rankin, A. M., Roscoe, H. K., Hollwedel, J., Wagner, T., and Jacobi, H. W.:
Frost flowers on sea ice as a source of sea salt and their influence on
tropospheric halogen chemistry, Geophys. Res. Lett., 31, L16114, https://doi.org/10.1029/2004gl020655, 2004.
Kamp, J., Skov, H., Jensen, B., and Sorensen, L. L.: Fluxes of gaseous elemental mercury (GEM) in the High Arctic during atmospheric mercury depletion events (AMDEs), Atmos. Chem. Phys., 18, 6923–6938,
https://doi.org/10.5194/acp-18-6923-2018, 2018.
Kelly, R., Chipman, M. L., Higuera, P. E., Stefanova, I., Brubaker, L. B.,
and Hu, F. S.: Recent burning of boreal forests exceeds fire regime limits of the past 10,000 years, P. Natl. Acad. Sci. USA, 110, 13055–13060, https://doi.org/10.1073/pnas.1305069110, 2013.
Lampert, A., Maturilli, M., Ritter, C., Hoffmann, A., Stock, M., Herber, A.,
Birnbaum, G., Neuber, R., Dethloff, K., Orgis, T., Stone, R., Brauner, R.,
Kässbohrer, J., Haas, C., Makshtas, A., Sokolov, V., and Liu, P.: The
Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009, Atmosphere, 3, 320–351, 2012.
Landis, M. S., Stevens, R. K., Schaedlich, F., and Prestbo, E. M.: Development and characterization of an annular denuder methodology for the
measurement of divalent inorganic reactive gaseous mercury in ambient air,
Environ. Sci. Technol., 36, 3000–3009, https://doi.org/10.1021/es015887t, 2002.
Laurier, F. J. G.: Reactive gaseous mercury formation in the North Pacific
Ocean's marine boundary layer: A potential role of halogen chemistry, J. Geophys. Res., 108, 4529, https://doi.org/10.1029/2003jd003625, 2003.
Law, K. S., Stohl, A., Quinn, P. K., Brock, C. A., Burkhart, J. F., Paris,
J.-D., Ancellet, G., Singh, H. B., Roiger, A., Schlager, H., Dibb, J., Jacob, D. J., Arnold, S. R., Pelon, J., and Thomas, J. L.: Arctic Air Pollution: New Insights from POLARCAT-IPY, B. Am. Meteorol. Soc., 95, 1873–1895, https://doi.org/10.1175/bams-d-13-00017.1, 2014.
Lin, C.-J. and Pehkonen, S. O.: Oxidation of elemental mercury by aqueous
chlorine (
Lindberg, S. E., Brooks, S., Lin, C. J., Scott, K. J., Landis, M. S., Stevens, R. K., Goodsite, M., and Richter, A.: Dynamic oxidation of gaseous
mercury in the Arctic troposphere at polar sunrise, Environ. Sci. Technol., 36, 1245–1256, https://doi.org/10.1021/es0111941, 2002.
Lu, J. Y., Schroeder, W. H., Barrie, L. A., Steffen, A., Welch, H. E.,
Martin, K., Lockhart, L., Hunt, R. V., Boila, G., and Richter, A.: Magnification of atmospheric mercury deposition to polar regions in
springtime: The link to tropospheric ozone depletion chemistry, Geophys. Res. Lett., 28, 3219–3222, https://doi.org/10.1029/2000gl012603, 2001.
Lyman, S. N., Cheng, I., Gratz, L. E., Weiss-Penzias, P., and Zhang, L.: An
updated review of atmospheric mercury, Sci. Total Environ., 707, 135575, https://doi.org/10.1016/j.scitotenv.2019.135575, 2020.
Macdonald, R. W. and Loseto, L. L.: Are Arctic Ocean ecosystems exceptionally vulnerable to global emissions of mercury? A call for emphasised research on methylation and the consequences of climate change, Environ. Chem., 7, 133–138, https://doi.org/10.1071/en09127, 2010.
Marusczak, N., Sonke, J. E., Fu, X., and Jiskra, M.: Tropospheric GOM at the
Pic du Midi Observatory – Correcting Bias in Denuder Based Observations,
Environ. Sci. Technol., 51, 863–869, https://doi.org/10.1021/acs.est.6b04999, 2017.
Møller, A. K., Barkay, T., Al-Soud, W. A., Sørensen, S. J., Skov, H.,
and Kroer, N.: Diversity and characterization of mercury-resistant bacteria
in snow, freshwater and sea-ice brine from the High Arctic, FEMS Microbiol. Ecol., 75, 390–401, https://doi.org/10.1111/j.1574-6941.2010.01016.x, 2011.
Monks, S. A., Arnold, S. R., Emmons, L. K., Law, K. S., Turquety, S., Duncan, B. N., Flemming, J., Huijnen, V., Tilmes, S., Langner, J., Mao, J., Long, Y., Thomas, J. L., Steenrod, S. D., Raut, J. C., Wilson, C., Chipperfield, M. P., Diskin, G. S., Weinheimer, A., Schlager, H., and Ancellet, G.: Multi-model study of chemical and physical controls on transport of anthropogenic and biomass burning pollution to the Arctic, Atmos. Chem. Phys., 15, 3575–3603, https://doi.org/10.5194/acp-15-3575-2015, 2015.
Muntean, M., Janssens-Maenhout, G., Song, S., Giang, A., Selin, N. E., Zhong, H., Zhao, Y., Olivier, J. G. J., Guizzardi, D., Crippa, M., Schaaf, E., and Dentener, F.: Evaluating EDGARv4.tox2 speciated mercury emissions ex-post scenarios and their impacts on modelled global and regional wet deposition patterns, Atmos. Environ., 184, 56–68, https://doi.org/10.1016/j.atmosenv.2018.04.017, 2018.
Nguyen, Q. T., Glasius, M., Sorensen, L. L., Jensen, B., Skov, H., Birmili, W., Wiedensohler, A., Kristensson, A., Nojgaard, J. K., and Massling, A.:
Seasonal variation of atmospheric particle number concentrations, new particle formation and atmospheric oxidation capacity at the high Arctic site Villum Research Station, Station Nord, Atmos. Chem. Phys., 16, 11319–11336, https://doi.org/10.5194/acp-16-11319-2016, 2016.
Obrist, D., Tas, E., Peleg, M., Matveev, V., Faïn, X., Asaf, D., and Luria, M.: Bromine-induced oxidation of mercury in the mid-latitude atmosphere, Nat. Geosci., 4, 22–26, https://doi.org/10.1038/ngeo1018, 2010.
Pal, B. and Ariya, P. A.: Studies of ozone initiated reactions of gaseous mercury: kinetics, product studies, and atmospheric implications, Phys. Chem. Chem. Phys., 6, 572–579, https://doi.org/10.1039/B311150D, 2004.
Park, J.-D. and Zheng, W.: Human Exposure and Health Effects of Inorganic and Elemental Mercury, J. Prev. Med. Publ. Health, 45, 344–352,
https://doi.org/10.3961/jpmph.2012.45.6.344, 2012.
Peterson, P. K., Pöhler, D., Sihler, H., Zielcke, J., General, S., Frieß, U., Platt, U., Simpson, W. R., Nghiem, S. V., Shepson, P. B., Stirm, B. H., Dhaniyala, S., Wagner, T., Caulton, D. R., Fuentes, J. D., and
Pratt, K. A.: Observations of bromine monoxide transport in the Arctic
sustained on aerosol particles, Atmos. Chem. Phys., 17, 7567–7579,
https://doi.org/10.5194/acp-17-7567-2017, 2017.
Peterson, P. K., Pöhler, D., Zielcke, J., General, S., Frieß, U.,
Platt, U., Simpson, W. R., Nghiem, S. V., Shepson, P. B., Stirm, B. H., and
Pratt, K. A.: Springtime Bromine Activation over Coastal and Inland Arctic
Snowpacks, ACS Earth Space Chem., 2, 1075–1086,
https://doi.org/10.1021/acsearthspacechem.8b00083, 2018.
Peterson, P. K., Hartwig, M., May, N. W., Schwartz, E., Rigor, I., Ermold, W., Steele, M., Morison, J. H., Nghiem, S. V., and Pratt, K. A.: Snowpack measurements suggest role for multi-year sea ice regions in Arctic atmospheric bromine and chlorine chemistry, Elem.-Sci. Anth., 7, 14, https://doi.org/10.1525/elementa.352, 2019.
Pfaffhuber, K. A., Berg, T., Hirdman, D., and Stohl, A.: Atmospheric mercury
observations from Antarctica: seasonal variation and source and sink region
calculations, Atmos. Chem. Phys., 12, 3241–3251, https://doi.org/10.5194/acp-12-3241-2012, 2012.
Pirrone, N., Cinnirella, S., Feng, X., Finkelman, R. B., Friedli, H. R.,
Leaner, J., Mason, R., Mukherjee, A. B., Stracher, G. B., Streets, D. G., and Telmer, K.: Global mercury emissions to the atmosphere from anthropogenic and natural sources, Atmos. Chem. Phys., 10, 5951–5964, https://doi.org/10.5194/acp-10-5951-2010, 2010.
Reid, J. S., Koppmann, R., Eck, T. F., and Eleuterio, D. P.: A review of
biomass burning emissions part II: intensive physical properties of biomass
burning particles, Atmos. Chem. Phys., 5, 799–825, https://doi.org/10.5194/acp-5-799-2005, 2005.
Rolph, G., Stein, A., and Stunder, B.: Real-time Environmental Applications
and Display sYstem: READY, Environ. Model. Softw., 95, 210–228, https://doi.org/10.1016/j.envsoft.2017.06.025, 2017.
Saiz-Lopez, A., Travnikov, O., Sonke, J. E., Thackray, C. P., Jacob, D. J.,
Carmona-García, J., Francés-Monerris, A., Roca-Sanjuán, D.,
Acuña, A. U., Dávalos, J. Z., Cuevas, C. A., Jiskra, M., Wang, F.,
Bieser, J., Plane, J. M. C., and Francisco, J. S.: Photochemistry of oxidized Hg(I) and Hg(II) species suggests missing mercury oxidation in the
troposphere, P. Natl. Acad. Sci. USA, 117, 30949–30956, https://doi.org/10.1073/pnas.1922486117, 2020.
Sander, R.: Compilation of Henry's law constants (version 4.0) for water as
solvent, Atmos. Chem. Phys., 15, 4399–4981, https://doi.org/10.5194/acp-15-4399-2015, 2015.
Schacht, J., Heinold, B., Quaas, J., Backman, J., Cherian, R., Ehrlich, A.,
Herber, A., Huang, W. T. K., Kondo, Y., Massling, A., Sinha, P. R., Weinzierl, B., Zanatta, M., and Tegen, I.: The importance of the representation of air pollution emissions for the modeled distribution and
radiative effects of black carbon in the Arctic, Atmos. Chem. Phys., 19,
11159–11183, https://doi.org/10.5194/acp-19-11159-2019, 2019.
Schmeisser, L., Backman, J., Ogren, J. A., Andrews, E., Asmi, E., Starkweather, S., Uttal, T., Fiebig, M., Sharma, S., Eleftheriadis, K., Vratolis, S., Bergin, M., Tunved, P., and Jefferson, A.: Seasonality of
aerosol optical properties in the Arctic, Atmos. Chem. Phys., 18, 11599–11622, https://doi.org/10.5194/acp-18-11599-2018, 2018.
Schmeissner, T., Krejci, R., Ström, J., Birmili, W., Wiedensohler, A.,
Hochschild, G., Gross, J., Hoffmann, P., and Calderon, S.: Analysis of number size distributions of tropical free tropospheric aerosol particles observed at Pico Espejo (4765 m a.s.l.), Venezuela, Atmos. Chem. Phys., 11, 3319–3332, https://doi.org/10.5194/acp-11-3319-2011, 2011.
Schroeder, W., Oliva, P., Giglio, L., and Csiszar, I. A.: The New VIIRS 375 m active fire detection data product: Algorithm description and initial
assessment, Remote Sens. Environ., 143, 85–96, https://doi.org/10.1016/j.rse.2013.12.008, 2014.
Schroeder, W. H., Anlauf, K. G., Barrie, L. A., Lu, J. Y., Steffen, A., Schneeberger, D. R., and Berg, T.: Arctic springtime depletion of mercury,
Nature, 394, 331–332, https://doi.org/10.1038/28530, 1998.
Schulz, H., Zanatta, M., Bozem, H., Leaitch, W. R., Herber, A. B., Burkart, J., Willis, M. D., Kunkel, D., Hoor, P. M., Abbatt, J. P. D., and Gerdes, R.: High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer, Atmos. Chem. Phys., 19, 2361–2384,
https://doi.org/10.5194/acp-19-2361-2019, 2019.
Semane, N., Peuch, V. H., El Amraoui, L., Bencherif, H., Massart, S., Cariolle, D., Attie, J. L., and Abida, R.: An observed and analysed stratospheric ozone intrusion over the high Canadian Arctic UTLS region
during the summer of 2003, Q. J. Roy. Meteorol. Soc., 133, 171–178, https://doi.org/10.1002/qj.141, 2007.
Shah, V. and Jaeglé, L.: Subtropical subsidence and surface deposition of oxidized mercury produced in the free troposphere, Atmos. Chem. Phys., 17, 8999–9017, https://doi.org/10.5194/acp-17-8999-2017, 2017.
Shepler, B. C., Balabanov, N. B., and Peterson, K. A.: Hg + BrHgBr
recombination and collision-induced dissociation dynamics, J. Chem. Phys., 127, 164304, https://doi.org/10.1063/1.2777142, 2007.
Simpson, W. R., Brown, S. S., Saiz-Lopez, A., Thornton, J. A., and Glasow, R.: Tropospheric halogen chemistry: sources, cycling, and impacts, Chem. Rev., 115, 4035–4062, https://doi.org/10.1021/cr5006638, 2015.
Simpson, W. R., Peterson, P. K., Frieß, U., Sihler, H., Lampel, J., Platt, U., Moore, C., Pratt, K., Shepson, P., Halfacre, J., and Nghiem, S. V.: Horizontal and vertical structure of reactive bromine events probed by
bromine monoxide MAX-DOAS, Atmos. Chem. Phys., 17, 9291–9309,
https://doi.org/10.5194/acp-17-9291-2017, 2017.
Skov, H., Christensen, J. H., Goodsite, M. E., Heidam, N. Z., Jensen, B., Wahlin, P., and Geernaert, G.: Fate of elemental mercury in the arctic during atmospheric mercury depletion episodes and the load of atmospheric mercury to the arctic, Environ. Sci. Technol., 38, 2373–2382, https://doi.org/10.1021/es030080h, 2004.
Skov, H., Brooks, S., Goodsite, M., Lindberg, S., Meyers, T., Landis, M.,
Larsen, M., Jensen, B., McConville, G., and Christensen, J.: Fluxes of reactive gaseous mercury measured with a newly developed method using relaxed eddy accumulation, Atmos. Environ., 40, 5452–5463,
https://doi.org/10.1016/j.atmosenv.2006.04.061, 2006.
Skov, H., Hjorth, J., Nordstrøm, C., Jensen, B., Christoffersen, C., Bech Poulsen, M., Baldtzer Liisberg, J., Beddows, D., Dall'Osto, M., and Christensen, J. H.: Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017, Atmos. Chem. Phys., 20, 13253–13265, https://doi.org/10.5194/acp-20-13253-2020, 2020.
Slemr, F., Weigelt, A., Ebinghaus, R., Kock, H. H., Bödewadt, J.,
Brenninkmeijer, C. A. M., Rauthe-Schöch, A., Weber, S., Hermann, M., Becker, J., Zahn, A., and Martinsson, B.: Atmospheric mercury measurements
onboard the CARIBIC passenger aircraft, Atmos. Meas. Tech., 9, 2291–2302,
https://doi.org/10.5194/amt-9-2291-2016, 2016.
Soerensen, A. L., Skov, H., Jacob, D. J., Soerensen, B. T., and Johnson, M.
S.: Global Concentrations of Gaseous Elemental Mercury and Reactive Gaseous
Mercury in the Marine Boundary Layer, Environ. Sci. Technol., 44, 7425–7430, https://doi.org/10.1021/es903839n, 2010.
Sommar, J., Andersson, M. E., and Jacobi, H. W.: Circumpolar measurements of
speciated mercury, ozone and carbon monoxide in the boundary layer of the
Arctic Ocean, Atmos. Chem. Phys., 10, 5031–5045, https://doi.org/10.5194/acp-10-5031-2010, 2010.
Steen, A. O., Berg, T., Dastoor, A. P., Durnford, D. A., Engelsen, O., Hole,
L. R., and Pfaffhuber, K. A.: Natural and anthropogenic atmospheric mercury in the European Arctic: a fractionation study, Atmos. Chem. Phys., 11, 6273–6284, https://doi.org/10.5194/acp-11-6273-2011, 2011.
Steffen, A., Schroeder, W., Bottenheim, J., Narayan, J., and Fuentes, J. D.:
Atmospheric mercury concentrations: measurements and profiles near snow and
ice surfaces in the Canadian Arctic during Alert 2000, Atmos. Environ., 36, 2653–2661, https://doi.org/10.1016/S1352-2310(02)00112-7, 2002.
Steffen, A., Bottenheim, J., Cole, A., Ebinghaus, R., Lawson, G., and Leaitch, W. R.: Atmospheric mercury speciation and mercury in snow over time
at Alert, Canada, Atmos. Chem. Phys., 14, 2219–2231, https://doi.org/10.5194/acp-14-2219-2014, 2014.
Steffen, A., Lehnherr, I., Cole, A., Ariya, P., Dastoor, A., Durnford, D.,
Kirk, J., and Pilote, M.: Atmospheric mercury in the Canadian Arctic. Part I: a review of recent field measurements, Sci. Total Environ., 509–510, 3–15,
https://doi.org/10.1016/j.scitotenv.2014.10.109, 2015.
Stephens, C. R., Shepson, P. B., Steffen, A., Bottenheim, J. W., Liao, J.,
Huey, L. G., Apel, E., Weinheimer, A., Hall, S. R., Cantrell, C., Sive, B.
C., Knapp, D. J., Montzka, D. D., and Hornbrook, R. S.: The relative importance of chlorine and bromine radicals in the oxidation of atmospheric
mercury at Barrow, Alaska, J. Geophys. Res.-Atmos., 117, D00R11, https://doi.org/10.1029/2011jd016649, 2012.
Stern, G. A., Macdonald, R. W., Outridge, P. M., Wilson, S., Chetelat, J.,
Cole, A., Hintelmann, H., Loseto, L. L., Steffen, A., Wang, F., and Zdanowicz, C.: How does climate change influence Arctic mercury?, Sci. Total
Environ., 414, 22–42, https://doi.org/10.1016/j.scitotenv.2011.10.039, 2012.
Stohl, A.: Computation, accuracy and applications of trajectories – A review
and bibliography, Atmos. Environ., 32, 947–966, https://doi.org/10.1016/s1352-2310(97)00457-3, 1998.
Stohl, A.: Characteristics of atmospheric transport into the Arctic troposphere, J. Geophys. Res., 111, D11306, https://doi.org/10.1029/2005jd006888, 2006.
Stroeve, J. C., Serreze, M. C., Holland, M. M., Kay, J. E., Malanik, J., and
Barrett, A. P.: The Arctic's rapidly shrinking sea ice cover: a research
synthesis, Climatic Change, 110, 1005–1027, https://doi.org/10.1007/s10584-011-0101-1, 2012.
Sturges, W. T., Cota, G. F., and Buckley, P. T.: Bromoform emission from
Arctic ice algae, Nature, 358, 660–662, https://doi.org/10.1038/358660a0, 1992.
Swartzendruber, P. C., Jaffe, D. A., Prestbo, E. M., Weiss-Penzias, P., Selin, N. E., Park, R., Jacob, D. J., Strode, S., and Jaeglé, L.:
Observations of reactive gaseous mercury in the free troposphere at the
Mount Bachelor Observatory, J. Geophys. Res., 111, D24301, https://doi.org/10.1029/2006jd007415, 2006.
Talbot, R., Mao, H., Scheuer, E., Dibb, J., and Avery, M.: Total depletion
of Hg degrees in the upper troposphere-lower stratosphere, Geophys. Res. Lett., 34, L23804, https://doi.org/10.1029/2007gl031366, 2007.
Tarasick, D. W. and Bottenheim, J. W.: Surface ozone depletion episodes in
the Arctic and Antarctic from historical ozonesonde records, Atmos. Chem.
Phys., 2, 197–205, https://doi.org/10.5194/acp-2-197-2002, 2002.
Thomas, J. L., Dibb, J. E., Huey, L. G., Liao, J., Tanner, D., Lefer, B.,
von Glasow, R., and Stutz, J.: Modeling chemistry in and above snow at
Summit, Greenland – Part 2: Impact of snowpack chemistry on the oxidation
capacity of the boundary layer, Atmos. Chem. Phys., 12, 6537–6554,
https://doi.org/10.5194/acp-12-6537-2012, 2012.
Toyota, K., Dastoor, A. P., and Ryzhkov, A.: Air–snowpack exchange of bromine, ozone and mercury in the springtime Arctic simulated by the 1-D
model PHANTAS – Part 2: Mercury and its speciation, Atmos. Chem. Phys., 14, 4135–4167, https://doi.org/10.5194/acp-14-4135-2014, 2014.
Tunved, P., Ström, J., and Krejci, R.: Arctic aerosol life cycle: linking aerosol size distributions observed between 2000 and 2010 with air mass transport and precipitation at Zeppelin station, Ny-Ålesund, Svalbard, Atmos. Chem. Phys., 13, 3643–3660, https://doi.org/10.5194/acp-13-3643-2013, 2013.
UNEP: UNEP: Minamata Convention on Mercury, available at:
http://www.mercuryconvention.org/Convention/tabid/3426/Default.aspx (last access: 12 November 2020), 2013.
von Glasow, R.: Atmospheric chemistry in volcanic plumes, P. Natl. Acad. Sci. USA, 107, 6594–6599, https://doi.org/10.1073/pnas.0913164107, 2010.
Walker, T. W., Jones, D. B. A., Parrington, M., Henze, D. K., Murray, L. T.,
Bottenheim, J. W., Anlauf, K., Worden, J. R., Bowman, K. W., Shim, C., Singh, K., Kopacz, M., Tarasick, D. W., Davies, J., von der Gathen, P., Thompson, A. M., and Carouge, C. C.: Impacts of midlatitude precursor emissions and local photochemistry on ozone abundances in the Arctic, J. Geophys. Res.-Atmos., 117, D01305, https://doi.org/10.1029/2011jd016370, 2012.
Wang, S., McNamara, S. M., Moore, C. W., Obrist, D., Steffen, A., Shepson, P. B., Staebler, R. M., Raso, A. R. W., and Pratt, K. A.: Direct detection of atmospheric atomic bromine leading to mercury and ozone depletion, P. Natl. Acad. Sci. USA, 116, 14479–14484, https://doi.org/10.1073/pnas.1900613116, 2019.
Weingartner, E., Saathoff, H., Schnaiter, M., Streit, N., Bitnar, B., and
Baltensperger, U.: Absorption of light by soot particles: determination of the absorption coefficient by means of aethalometers, J. Aerosol Sci., 34, 1445–1463, https://doi.org/10.1016/S0021-8502(03)00359-8, 2003.
Weiss-Penzias, P., Amos, H. M., Selin, N. E., Gustin, M. S., Jaffe, D. A.,
Obrist, D., Sheu, G. R., and Giang, A.: Use of a global model to understand
speciated atmospheric mercury observations at five high-elevation sites,
Atmos. Chem. Phys., 15, 1161–1173, https://doi.org/10.5194/acp-15-1161-2015, 2015.
Winiger, P., Barrett, T. E., Sheesley, R. J., Huang, L., Sharma, S., Barrie,
L. A., Yttri, K. E., Evangeliou, N., Eckhardt, S., Stohl, A., Klimont, Z.,
Heyes, C., Semiletov, I. P., Dudarev, O. V., Charkin, A., Shakhova, N., Holmstrand, H., Andersson, A., and Gustafsson, Ö.: Source apportionment of circum-Arctic atmospheric black carbon from isotopes and modeling, Sci. Adv., 5, eaau8052, https://doi.org/10.1126/sciadv.aau8052, 2019.
Yang, X., Cox, R. A., Warwick, N. J., Pyle, J. A., Carver, G. D., O'Connor, F. M., and Savage, N. H.: Tropospheric bromine chemistry and its impacts on
ozone: A model study, J. Geophys. Res.-Atmos., 110, D23311, https://doi.org/10.1029/2005jd006244, 2005.
Ye, Z., Mao, H., Lin, C. J., and Kim, S. Y.: Investigation of processes
controlling summertime gaseous elemental mercury oxidation at midlatitudinal
marine, coastal, and inland sites, Atmos. Chem. Phys., 16, 8461–8478,
https://doi.org/10.5194/acp-16-8461-2016, 2016.
Zanatta, M., Laj, P., Gysel, M., Baltensperger, U., Vratolis, S., Eleftheriadis, K., Kondo, Y., Dubuisson, P., Winiarek, V., Kazadzis, S., Tunved, P., and Jacobi, H. W.: Effects of mixing state on optical and radiative properties of black carbon in the European Arctic, Atmos. Chem.
Phys., 18, 14037–14057, https://doi.org/10.5194/acp-18-14037-2018, 2018.
Zheng, C., Wu, Y., Ting, M., Orbe, C., Wang, X., and Tilmes, S.: Summertime
Transport Pathways From Different Northern Hemisphere Regions Into the
Arctic, J. Geophys. Res.-Atmos., 126, e2020JD033811, https://doi.org/10.1029/2020JD033811, 2021.
Short summary
Atmospheric mercury species (GEM, GOM, PHg) are important constituents in the High Arctic due to their detrimental effects on human and ecosystem health. However, understanding their behavior in the High Arctic summer remains lacking. This research investigates the dynamics of mercury oxidation in the High Arctic summer. The cold, dry, sunlit free troposphere was associated with events of high GOM in the High Arctic summer, while individual events yielded unique origins.
Atmospheric mercury species (GEM, GOM, PHg) are important constituents in the High Arctic due to...
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