Nadja Steiner

Image Steiner, Nadja
Research Scientist

Dr. Steiner develops numerical models for Arctic marine ecosystems and biogeochemical cycles and assesses Arctic marine ecosystem responses to climate change, including its global and regional impacts. Dr. Steiner co-chairs the international expert community on Biogeochemical Exchange Processes at Sea-Ice Interfaces (BEPSII).

Current research and/or projects

  1. Modelling ecosystem in regional (Arctic, North Pacific) and global contexts (Canadian Earth System Model).
  2. The marine sulphur cycle (DMS measurements and modelling along Line P and at Station P).
  3. Climate change impacts on Arctic ecosystems and the inorganic carbon cycle (e.g. Response to sea-ice changes, acidification).

Key publications

Hayashida, H., M. Jin, N.S. Steiner, N.C. Swart, E. Watanabe, R. Fiedler, A.McC. Hogg, A.E. Kiss, R.J. Matear, Peter G. Strutton, 2020. Ice Algae Model Intercomparison Projectphase 2(IAMIP2), submitted to Geosci. Model Dev.

Miller, L., F. Fripiat, S. Moreau, D. Nomura, J. Stefels, N. Steiner, L. Tedesco, and M. Vancoppenolle (2020), Implications of sea ice management for Arctic biogeochemistry, Eos, 101,

Lannuzel, D., Tedesco, L., van Leeuwe, M. et al. The future of Arctic sea-ice biogeochemistry and ice-associated ecosystems. Nat. Clim. Chang. 10, 983–992 (2020).

Hayashida, H., Carnat, G., Galí, M., Monahan, A. H., Mortenson, E., Sou, T., & Steiner, N. S. (2020). Spatiotemporal variability in modeled bottom ice and sea surface dimethylsulfide concentrations and fluxes in the Arctic during 1979–2015. Global Biogeochemical Cycles, 34, e2019GB006456.

Mortenson, E., Steiner, N., Monahan, A. H., Hayashida, H., Sou, T., & Shao, A., 2020. Modeled impacts of sea ice exchange processes on Arctic Ocean carbon uptake and acidification (1980–2015). Journal of Geophysical Research: Oceans, 125, e2019JC015782.

Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner, 2019. Multi-model intercomparison of the pan-Arctic ice-algal productivity on seasonal, interannual, and decadal timescales, JGR Oceans.

Thomas et al., 2019. Fostering multidisciplinary research on interactions between chemistry, biology, and physics within the coupled cryosphere-atmosphere system. Elem Sci Anth, 7: 58. DOI:

Tai, TC., N. Steiner, C. Hoover, W.W.L. Cheung and U. Rashid Sumaila, 2019, Evaluating present and future potential of Arctic fisheries in Canada, Marine Policy, Marine Policy, 108,

Steiner, N, W.W.L. Cheung, A.M. Cisneros-Montemayor, H.Drost, H. Hayashida, C. Hoover, J. Lam, E. Mortenson, T. Sou, U. Rashid Sumaila, P. Suprenand, T.C. Tai and D.L. VanderZwaag, 2019, Impacts of the changing ocean-sea ice system on the key forage fish Arctic cod (Boreogadus Saida) and subsistence fisheries in the Western Canadian Arctic - Evaluating linked climate, ecosystem and economic (CEE) models, Frontiers.

Hayashida, H., J. Christian, A. Holdsworth, X. Hu, A. Monahan, E. Mortenson, P. Myers, O.Riche, T.Sou, N. Steiner, 2018, CSIB v1: a sea-ice biogeochemical model for the NEMO community ocean modelling framework, Geosci. Model Dev., 12, 1965–1990,

Fennel, K. et al.: Carbon cycling in the North American coastal ocean: A synthesis, Biogeosciences, 16, 1281-1304, 2019, 2018. 

Abbatt, J et al. 2018, New Insights into Aerosol and Climate in the Arctic, Atmos. Chem. Phys., 19, 2527-2560, 2019

Mortenson, E., N. Steiner, A. Monahan, L.A. Miller, N.X. Geilfus, K. Brown. 2018, A model-based analysis of physical and biogeochemical controls on carbon exchange in the upper water column, sea ice, and atmosphere in a seasonally ice-covered Arctic strait, JGR Oceans, 123,10, 7529-7549,

Hayashida, H. N. Steiner, A. Monahan, V. Galindo, M.Levasseur, and M. Lizotte, 2017, Implications of sea ice sulfur cycle for oceanic production and emissions of dimethylsulfide in the Arctic, Biogeosciences, 14, 3129–3155, 2017,

Steiner, N., J. Stefels, Commentary on the outputs and future of Biogeochemical Exchange Processes at Sea-Ice Interfaces (BEPSII). Elem Sci Anth. 2017;5:81. DOI:

Mortenson, E., H. Hayashida, N. Steiner, A. Monahan, M. Blais, M.A. Gale , V. Galindo, M. Gosselin, X. Hu, D. Lavoie, C. J. Mundy, 2017, A model-based analysis of physical and biological controls on ice algae and pelagic primary production in Resolute Passage, Elem Sci Anth., 5:39. DOI:

Cisneros-Montemayor et al., 2017. Towards an integrated database of Canadian ocean resources: benefits, current states, and research gaps, Canadian Journal of Fisheries and Aquatic Sciences, 74(1): 65-74, 10.1139/cjfas-2015-0573.

Fripiat et al., 2017, Macro-nutrient concentrations in Antarctic Southern Ocean pack ice: Overall patterns and overlooked processes, Elem Sci Anth.;5:13. DOI:

Steiner, N., C. Deal, D. Lannuzel, D. Lavoie, F. Massonnet, L. A. Miller, S. Moreau, E. Popova, J. Stefels, L. Tedesco, 2016, What sea-ice biogeochemical modellers need from observationalists. Elementa, DOI 10.12952/journal.elementa.000084.

Steiner, N., T. Sou, C. De Lee, W. G., Christian, J. R.,al, J. M. Jackson, M. Jin, E. Popova, W. Williams, and A. Yool, 2015. The Future of the Subsurface Chlorophyll-a Maximum in the Canada Basin - A Model Intercomparison, JGR Oceans, DOI:10.1002/2015JC011232.

Abraham, C, N. Steiner, A, Monahan, C, Michel, 2015, Effects of subgrid-scale snow thickness variability on radiative transfer in sea ice. JGR Oceans, 120(8): 5597-5614, DOI: 10.1002/2015JC010741.

Steiner, al. 2015, Observed Trends and Climate Projections Affecting Marine Ecosystems in the Canadian Arctic, Environmental Reviews, 23(2): 191-239, doi: 10.1139/er-2014-0066.

Steiner, N., J. Christian, K. Six, A. Yamamoto, M. Yamamoto-Kawai, 2014, Future ocean acidification in the Canada Basin and surrounding Arctic Ocean from CMIP5 earth system models, JGR Oceans, DOI:10.1002/2013JC009069.

Vancoppenolle, M. et al., 2013. Future Arctic primary productivity from CMIP5 simulations: Uncertain outcome, but consistent mechanisms. Global Biogeochemical Cycles., Global Biogeochemical Cycles, 27, DOI:10.1002/gbc.20055.

Steiner et al., Lee, W. G., Christian, J. R., 2013. Enhanced gas fluxes in small sea ice leads and cracks - effects on CO2 exchange and ocean acidification. JGR Oceans, 118,3, 1195–1205. DOI:10.1002/jgrc.20100