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Dr Ewa M. Bednarz

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Publications
Talks

Publications

accepted / in press

  •  Kimberlee Dube, Susann Tegtmeier, Adam Bourassa, Johannes C. Laube, Andreas Engel, Laura N. Saunders, Kaley A. Walker, Ryan Hossaini, and Ewa M. Bednarz: Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine, Communications Earth & Environment, 2025 (accepted/in press).

in review:

  • C. Orbe, A. Ming, G. Chiodo, M. Prather, M. Diallo, Q. Tang, A. Chrysanthou, H. Naoe, X. Zhou, I. Thaler, Di. Elsbury, E. Bednarz, J. S. Wright, A. Match, S. Watanabe, J. Anstey, T. Kerzenmacher, S. Versnick, M. Marchand, F. Li and J. Keeble:  Experimental Protocol for Phase 1 of the APARC QUOCA (QUasibiennial oscillation and Ozone Chemistry interactions in the Atmosphere) Working Group, Geoscientific Model Development, 2025 (submitted/in review) 
  • C. Gurganus, E. M. Bednarz, A. W. Rollins, E. Waxman, E. A. Ray, E. J. Hintsa, F. L. Moore, D. Nance, B. D. Hall, S. A. Montzka, I. J. Vimont, J. P. Schwarz, S. DeLone, S. J. Ciciora, S. Abou-Rizk, J. Zhang, T. D. Thornberry: Constraining the Stratospheric Sulfate Budget in Global Models: Insights from In-Situ OCS Measurements during 2023 SABRE and Comparison with Satellite, Balloon and Surface Data, Geophysical Research Letters, [preprint] DOI: 10.22541/au.174923128.88516613/v1, 2025 (in review) 
  • Bednarz, E. M., Butler, A. H., Wang, X., Zhuo, Z., Yu, W., Stenchikov, G., Toohey, M., and Zhu, Y.: Indirect climate impacts of the Hunga eruption, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-1970, 2025 (in review for ACP).
  • Bednarz, E. M., Goddard, P. B., MacMartin, D. G., Visioni, D., Bailey, D. A, Danabasoglu, G.:. Stratospheric Aerosol Injection could prevent future Atlantic Meridional Overturning Circulation decline, but injection location is key, https://doi.org/10.22541/essoar.173482135.52320055/v1 [preprint],  Earth's Future, 2025 (in review). 
  • Farley, J., MacMartin, D. G., Visioni, D., Kravitz, B., Bednarz, E., Duffey, A., and Henry, M.: A Climate Intervention Dynamical Emulator (CIDER) for Scenario Space Exploration, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-1830, 2025 (in review for GMD). 
  • Zhuo, Z., Wang, X., Zhu, Y., Bednarz, E. M., Fleming, E., Colarco, P. R., Watanabe, S., Plummer, D., Stenchikov, G., Randel, W., Bourassa, A., Aquila, V., Sekiya, T., Schoeberl, M. R., Tilmes, S., Yu, W., Zhang, J., Kushner, P. J., and Pausata, F. S. R.: Comparing Multi-Model Ensemble Simulations with Observations and Decadal Projections of Upper Atmospheric Variations Following the Hunga Eruption, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-1505, 2025 (in review for ACP). 
  • Zhu, Y., Akiyoshi, H., Aquila, V., Asher, E., Bednarz, E. M., Bekki, S., Brühl, C., Butler, A. H., Case, P., Chabrillat, S., Chiodo, G., Clyne, M., Falletti, L., Colarco, P. R., Fleming, E., Jörimann, A., Kovilakam, M., Koren, G., Kuchar, A., Lebas, N., Liang, Q., Liu, C.-C., Mann, G., Manyin, M., Marchand, M., Morgenstern, O., Newman, P., Oman, L. D., Østerstrøm, F. F., Peng, Y., Plummer, D., Quaglia, I., Randel, W., Rémy, S., Sekiya, T., Steenrod, S., Sukhodolov, T., Tilmes, S., Tsigaridis, K., Ueyama, R., Visioni, D., Wang, X., Watanabe, S., Yamashita, Y., Yu, P., Yu, W., Zhang, J., and Zhuo, Z.: Hunga Tonga-Hunga Ha’apai Volcano Impact Model Observation Comparison (HTHH-MOC) Project: Experiment Protocol and Model Descriptions, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-3412, 2024 (in review for GMD).
  • Brody, E., Zhang, Y., MacMartin, D. G., Visioni, D., Kravitz, B., and Bednarz, E. M.: Using Optimization Tools to Explore Stratospheric Aerosol Injection Strategies, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-3974, 2025 (in review for ESD). 

2025

  • Eastham, S. D., Butler, A. H., Doherty, S. J., Gasparini, B., Tilmes, S., Bednarz, E. M., U. Burkhardt,  G. Chiodo,  D. J. Cziczo,  M. S. Diamond,  D. W. Keith,  T. Leisner,  D. G. MacMartin,  J. Quaas,  P. J. Rasch,  O. Sourdeval,  I. Steinke, C. Thompson,  D. Visioni,  R. Wood,  L. Xia,  P. Yu: Key gaps in models' physical representation of climate intervention and its impacts. Journal of Advances in Modeling Earth Systems, 17, e2024MS004872, https://doi.org/10.1029/2024MS004872, 2025.
  • Tilmes, S., Bednarz, E. M., Jörimann, A., Visioni, D., Kinnison, D. E., Chiodo, G., and Plummer, D.: Stratospheric Aerosol Intervention experiment for the Chemistry–Climate Model Initiative, Atmos. Chem. Phys., 25, 6001–6023, https://doi.org/10.5194/acp-25-6001-2025, 2025. 
  • Bednarz, E. M., Haywood, J. M., Visioni, D., Butler, A. H., Jones, A.: How marine cloud brightening could also affect stratospheric ozone, Science Advances, 11, eadu4038, DOI:10.1126/sciadv.adu4038, 2025.
  • Asutosh, A., Tilmes, S., Bednarz, E. M., Fadnavis, S: South Asian Summer Monsoon under stratospheric aerosol intervention, npj Climate and Atmospheric Science, 8, 3, https://doi.org/10.1038/s41612-024-00875-z, 2025. 

2024

  • Henry, M., Bednarz, E. M., and Haywood, J.: How does the latitude of stratospheric aerosol injection affect the climate in UKESM1?, Atmos. Chem. Phys., 24, 13253–13268, https://doi.org/10.5194/acp-24-13253-2024, 2024. 
  • Butler, A. H., Bais, A., Bednarz, E. M., Daniel, J. S., Fleming, E., Kinnison, D., Madronich, S., Morgenstern, O., Plummer, D., Portmann, R. W., Tilmes, S., Ravishankara, A. R.: Nitrous oxide, stratospheric ozone depletion and its impacts, Chapter 4.2 in: United Nations Environment Programme & Food and Agriculture Organization of the United Nations: Global Nitrous Oxide Assessment, https://wedocs.unep.org/20.500.11822/46562, 2024.   
  • Tilmes, S., K. Rosenlof, D. Visioni, E.M. Bednarz, T. Felgenhauer, W. Smith, C. Lennard, M. Diamond, M. Henry, C. Harrison, and C. Thompson, Research criteria towards an interdisciplinary stratospheric aerosol intervention assessment, Oxford Open Climate Change, 4(1), doi:10.1093/oxfclm/kgae010, 2024.
  • Brody, E., Visioni, D., Bednarz, E. M., Kravitz, B., MacMartin, D. G., Richter, J. H., Tye, M. R.: Kicking the Can Down the Road: Understanding the Effects of Delaying the Deployment of Stratospheric Aerosol Injection, Environmental Research: Climate, 3, doi:10.1088/2752-5295/ad53f3, 2024.
  • Quaglia, I., Visioni, D., Bednarz, E. M., MacMartin, D. G., Kravitz, B.: The potential of Stratospheric Aerosol Injection to reduce the climatic risks of explosive volcanic eruptions, Geophysical Research Letters, 51, e2023GL107702, https://doi.org/10.1029/2023GL107702, 2024. 
  • Wells, A. F., Henry, M., Bednarz, E. M., MacMartin, D. G., Jones, A., Dalvi, M., and Haywood, J. M.: Identifying climate impacts from different stratospheric aerosol injection strategies in UKESM1, Earth's Future, 12, e2023EF004358, https://doi.org/10.1029/2023EF004358, 2024.
  • Zhang, Y., MacMartin, D. G., Visioni, D., Bednarz, E. M., and Kravitz, B.: Hemispherically symmetric strategies for stratospheric aerosol injection, Earth Syst. Dynam., 15, 191–213, https://doi.org/10.5194/esd-15-191-2024, 2024.

2023

  • Goddard, P. B., Kravitz, B., MacMartin, D. G., Visioni, D., Bednarz, E. M., Lee, W. R. : Stratospheric aerosol injection can reduce risks to Antarctic ice loss depending on injection location and amount, J. Geophys. Res. Atmos, 128, e2023JD039434, https://doi.org/10.1029/2023JD039434, 2023.
  • Bednarz, E. M., Visioni., D. Butler, A. H., Kravitz, B., MacMartin, D. G., Tilmes, S.: Potential non-linearities in the high latitude circulation and ozone response to Stratospheric Aerosol Injection, Geophys. Res. Lett., 50, e2023GL104726, https://doi.org/10.1029/2023GL1047250, 2023.
  • Bednarz, E. M., Butler, A. H., Visioni, D., Zhang, Y., Kravitz, B., and MacMartin, D. G.: Injection strategy – a driver of atmospheric circulation and ozone response to stratospheric aerosol geoengineering, Atmos. Chem. Phys., 23, 13665–13684, https://doi.org/10.5194/acp-23-13665-2023, 2023.
  • Bednarz, E. M., Hossaini, R., and Chipperfield, M. P.: Atmospheric impacts of chlorinated very short-lived substances over the recent past – Part 2: Impacts on ozone, Atmos. Chem. Phys., 23, 13701–13711, https://doi.org/10.5194/acp-23-13701-2023, 2023.
  • Bednarz, E. M., Hossaini, R., Abraham, N. L., and Chipperfield, M. P.: Description and evaluation of the new UM–UKCA (vn11.0) Double Extended Stratospheric–Tropospheric (DEST vn1.0) scheme for comprehensive modelling of halogen chemistry in the stratosphere, Geosci. Model Dev., 16, 6187–6209, https://doi.org/10.5194/gmd-16-6187-2023, 2023.
  • Henry, M., Haywood, J., Jones, A., Dalvi, M., Wells, A., Visioni, D., Bednarz, E. M., MacMartin, D. G., Lee, W., and Tye, M. R.: Comparison of UKESM1 and CESM2 simulations using the same multi-target stratospheric aerosol injection strategy, Atmos. Chem. Phys., 23, 13369–13385, https://doi.org/10.5194/acp-23-13369-2023, 2023.
  • Visioni, D., Bednarz, E. M., MacMartin, D. G., Kravitz, B., & Goddard, P. B.: The choice of baseline period influences the assessments of the outcomes of stratospheric aerosol injection, Earth's Future, 11, e2023EF003851,  https://doi.org/10.1029/2023EF003851, 2023.
  • Lee, W. R., Visioni, D., Bednarz, E. M., MacMartin, D. G., Kravitz, B., Tilmes, S.: Quantifying the efficiency of stratospheric aerosol geoengineering at different altitudes, Geophysical Research Letters, 50, e2023GL104417, https://doi.org/10.1029/2023GL104417, 2023.
  • Bednarz, E. M., Visioni, D., Kravitz, B., Jones, A., Haywood, J. M., Richter, J., MacMartin, D. G., and Braesicke, P.: Climate response to off-equatorial stratospheric sulfur injections in three Earth system models – Part 2: Stratospheric and free-tropospheric response, Atmos. Chem. Phys., 23, 687–709, https://doi.org/10.5194/acp-23-687-2023, 2023.
  • Visioni, D., Bednarz, E. M., Lee, W. R., Kravitz, B., Jones, A., Haywood, J. M., and MacMartin, D. G.: Climate response to off-equatorial stratospheric sulfur injections in three Earth system models – Part 1: Experimental protocols and surface changes, Atmos. Chem. Phys., 23, 663–685, https://doi.org/10.5194/acp-23-663-2023, 2023.

2022

  • Bednarz, E. M., Visioni , D., Richter, J. H., Butler, A. H., MacMartin , D. G.: Impact of the latitude of stratospheric aerosol injection on the Southern Annular Mode, Geophysical Research Letters, 49, e2022GL100353. https://doi.org/10.1029/2022GL100353, 2022.
  • Bednarz, E. M., Hossaini, R., Chipperfield, M. P., Abraham, N. L., and Braesicke, P.: Atmospheric impacts of chlorinated very short-lived substances over the recent past – Part 1: Stratospheric chlorine budget and the role of transport, Atmos. Chem. Phys., 22, 10657–10676, https://doi.org/10.5194/acp-22-10657-2022, 2022.
  • Bednarz, E. M., Visioni, D., Banerjee, A., Braesicke, P., Kravitz, B., MacMartin, D. G.: The overlooked role of the stratosphere under a solar constant reduction, Geophysical Research Letters, 49, e2022GL098773. https://doi.org/10.1029/2022GL098773, 2022.
  • Tilmes​​​​​​​, S., Visioni, D., Jones, A., Haywood, J., Séférian, R., Nabat, P., Boucher, O., Bednarz, E. M., and Niemeier, U.: Stratospheric ozone response to sulfate aerosol and solar dimming climate interventions based on the G6 Geoengineering Model Intercomparison Project (GeoMIP) simulations, Atmos. Chem. Phys., 22, 4557–4579, https://doi.org/10.5194/acp-22-4557-2022, 2022.
  • Cheng, W., MacMartin, D. G., Kravitz, B., Visioni, D., Bednarz, E. M., Xu, Y., Luo, Y., Huang, L., Hu, Y., Staten, P. W., Hitchcock, P., Moore, J. C., Guo, A., Deng, X.:  Changes in Hadley circulation and intertropical convergence zone under strategic stratospheric aerosol geoengineering. npj Clim Atmos Sci 5, 32. https://doi.org/10.1038/s41612-022-00254-6, 2022.

2020

  • Claxton, T., Hossaini, R., Wilson, C., Montzka, S. A., Chipperfield, M. P., Wild, O., Bednarz, E. M., L. J. Carpenter, S. J. Andrews, S. C. Hackenberg, J. Mühle, D. Oram, S. Park, M.‐K. Park, E. Atlas, M. Navarro, S. Schauffler, D. Sherry, M. Vollmer, T. Schuck, A. Engel, P. B. Krummel, M. Maione, J. Arduini, T. Saito, Y. Yokouchi, S. O'Doherty, D. Young, and C. Lunder: A synthesis inversion to constrain global emissions of two very short lived chlorocarbons: dichloromethane, and perchloroethylene, J. Geophys. Res. Atmos., 125, e2019JD031818, https://doi.org/10.1029/2019JD031818, 2020.

2019

  • Bednarz, E. M., Maycock, A. C., Braesicke, P., Telford, P. J., Abraham, N. L., and Pyle, J. A.: Separating the role of direct radiative heating and photolysis in modulating the atmospheric response to the amplitude of the 11-year solar cycle forcing, Atmos. Chem. Phys, https://doi.org/10.5194/acp-19-9833-2019, 19, 9833–9846, 2019.
  • Bednarz, E. M., Maycock, A. C., Telford, P. J., Braesicke, P., Abraham, N. L., and Pyle, J. A.: Simulating the atmospheric response to the 11-year solar cycle forcing with the UM-UKCA model: the role of detection method and natural variability, Atmos. Chem. Phys., https://doi.org/10.5194/acp-19-5209-2019, 19, 5209–5233, 2019.

2018

  • Dhomse, S. S., Kinnison, D., Chipperfield, M. P., Salawitch, R. J., Cionni, I., Hegglin, M. I., Abraham, N. L., Akiyoshi, H., Archibald, A. T., Bednarz, E. M., Bekki, S., Braesicke, P., Butchart, N., Dameris, M., Deushi, M., Frith, S., Hardiman, S. C., Hassler, B., Horowitz, L. W., Hu, R.-M., Jöckel, P., Josse, B., Kirner, O., Kremser, S., Langematz, U., Lewis, J., Marchand, M., Lin, M., Mancini, E., Marécal, V., Michou, M., Morgenstern, O., O'Connor, F. M., Oman, L., Pitari, G., Plummer, D. A., Pyle, J. A., Revell, L. E., Rozanov, E., Schofield, R., Stenke, A., Stone, K., Sudo, K., Tilmes, S., Visioni, D., Yamashita, Y., and Zeng, G.: Estimates of ozone return dates from Chemistry-Climate Model Initiative simulations, Atmos. Chem. Phys., 18, 8409-8438, https://doi.org/10.5194/acp-18-8409-2018, 2018

2017

  • Keeble, J., Bednarz, E. M., Banerjee, A., Abraham, N. L., Harris, N. R. P., Maycock, A. C., and Pyle, J. A.: Diagnosing the radiative and chemical contributions to future changes in tropical column ozone with the UM-UKCA chemistry–climate model, Atmos. Chem. Phys., 17, 13801-13818, https://doi.org/10.5194/acp-17-13801-2017, 2017.

2016

  • Bednarz, E. M., Maycock, A. C., Abraham, N. L., Braesicke, P., Dessens, O. and Pyle, J. A.: Future Arctic ozone recovery: the importance of chemistry and dynamics, Atmos. Chem. Phys., 16, 12159-12176, doi:10.5194/acp-16-12159-2016, 2016