Dr. Elizabeth Pattey

Image Elizabeth Pattey
Principal Research Scientist

Principal Research Scientist located at the Central Experimental Farm (Ottawa, ON).

As an expert in micrometeorology and ecophysiology, leads projects and collaborates on scientific studies contributing to: 

- Develop and improve methodology for quantifying trace gas fluxes such as nitrous oxide, ammonia, methane and carbon dioxide;

- Quantify greenhouse gas emissions from agricultural practices at the field-, farm- and regional-scales using micrometeorological techniques and laser -based instrumentation;

- Verify process-based models describing 1) greenhouse gas emissions and ammonia volatilization from agricultural sources , 2) crop growth and evapotransiration;

- Quantify crop growth, biomass, water and nitrogen use efficiencies in response to weather and soil conditions using  micrometeorology, modelling and remote sensing (Earth observation).

- Evaluate the impact of field crop beneficial management practices and clean technologies on air quality with a special emphasis on nitrous oxide emissions and ammonia volatilization and deposition.

Research and/or project statements

Leads projects combining micrometeorology, Earth Observations (EO) and modelling to enhance the sustainability of rainfed field crop production and to quantify carbon dioxide, water vapour, nitrous oxide and ammonia fluxes in response to climate variations.

Enhanced the value of EO by providing insight on soil/crop descriptors retrieval and their assimilation in crop growth models to predict crop productivity and assess environmental impact related to crop production.

Led the creation of Identifying NEMO (nitrogen ecophysiologically modelled optimum). A model-based methodology  to derive strategic nitrogen application rates accounting for climate variations and soil properties and fully compatible with the assessment of reactive nitrogen release in the environment.

Principal Investigator of the Canada CFIA–Ottawa site of Joint Experiment of Crop Assessment and Monitoring (JECAM).

Led the creation of the GreenCropTracker software to analyze digital picture for extracting crop fraction and green Leaf Area Index to monitor crop growth  (https://www.flintbox.com/public/project/5470/).

As Principal Investigator, coordinated flux tower measurements in several environments in support to the National Research Council of Canada flux aircraft operations for the Boreal Ecosystem and Atmosphere Study (BOREAS), and for various research initiatives funded by Agriculture and Agri-Food Canada.

Education and awards

PhD Plant Science-Micrometeorology

BScA Agronomy

2020 American Meteorological Society The Award for Outstanding Achievement in Biometeorology for pionneering the development of systems that measure surface layer turbulence and the nocturnal boundary layer to quantify particulate matter and trace gas fluxes.

2018 Canadian Meteorological and Oceanographic Society Andrew Thomson Prize in Applied Meteorology for long-standing leadership and significant contributions to agricultural meteorology, particularly tower-based flux measuring systems over agricultural fields which have contributed to improved quantification of pollutants and understanding of greenhouse gas exchanges from agricultural sources.

2015 Fellow of the Canadian Society of Agricultural and Forest Meteorology for lifetime contributions to agricultural and forest meteorology.

2002 Co-recipient of World Meteorological Organization Norbert Gerbier-MUMM International Award.

1997 Graham Walker Award to recognize the excellence in agrometeorology from the Canadian Society of Agro-Meteorology.

International experience and/or work

Collaborated to FarmGas experiments in New Zealand (NIWA).

Key publications

  1. Pattey, E., Jégo, G., Leonard, J. 2020. Verification and long-term simulations of STICS crop model to predict and analyze growing seasons N2O fluxes of spring wheat in eastern Canada. STICS symposium, Montpellier, France, Feb 6-7, 2020

    2020 - View publication details

  2. Carozzi M Bellocchi G., Ehrhardt F., Brilli L., Bathia A., De Antoni Migliorati
    M., Doltra J., Dorich C., Doro L., Fitton N., Grace P., Grant B., Giacomini S.,
    Leonard J., Loubet B., Massad Raia S., Pattey E., Sharp J., Smith P., Smith W.,
    Zhang Q., Recous S. 2020. Evaluation of mitigation practices to reduce N2O and increase soil C; multi-model assessment in five croplands worldwide. Proceedings of ICROPM 2020, Montpellier, France, Feb 3-5 2020, 547-548

    2020 - View publication details

  3. Sandor, R., Bellocchi, G., Ehrhardt, F., Bhatia, A., Brilli, L., de Antoni Migliorati, M., Carozzi, M., Doltra, J., Dorich, C., Doro, L., Fitton, N., Fuchs, K., Gongadze, K., Grace, P., Grant, B., Giacomini, S., Klumpp, K., Léonard, L., Liebig, M., Martin, R., Massad, R. S., Merbold, L., Newton, P., Pattey, E., Rees, B., Rolinski, S., Sharp, J., Smith, P., Smith, W., Snow, V., Soussana, J.-F., Zhang, Q., Recous, S. (2019). Poster: Quantification of modelling uncertainties in an ensemble of carbon simulations in grasslands and croplands. Presented at 3rd Agriculture and Climate Change Conference, Budapest, HUN (2019-03-24 - 2019-03-26). https://prodinra.inra.fr/record/472277

    2019 - View publication details

  4. Pattey, E., Jégo, G., Léonard, J. 2018. Verification of STICS crop model performance to predict N2O fluxes during several growing seasons of spring wheat in eastern Canada. American Geophysical Union annual meeting, Washington (DC), 10-14 December 2018. (Poster)

    2018 - View publication details

  5. Mesbah, M., Pattey, E., Jégo, G., 2018. An improved precipitation indicator for corn yield prediction: proof of concept using STICS model in eastern Canada. American Geophysical Union annual meeting, Washington (DC), 10-14 December 2018. (Poster)

    2018 - View publication details

  6. Singh, S., Moravek, A., Pattey, E., Murphy, J. 2018. Surface-atmosphere exchange of ammonia over a corn field: eddy covariance flux measurements using QC-TILDAS. American Geophysical Union annual meeting, Washington (DC), 10-14 December 2018.

    2018 - View publication details

  7. Ricaud, P., Attie, J-L., Brooker, L., Emili, E., Granier, C., Lahoz, W., Lelieveld, J., Leonard, J.,; Nevrly, V., Papale, D., Pasternak, F., Pattey, E., Piacentini, A., Ramonet, M., Raynal, H., Saitoh, N., Sciare, J., Tallec, Ti., Warner, J., Zelinger, Z.,2018. The Monitoring Nitrous Oxide Sources (MIN2OS) satellite project. ESA ATMOS 2018, Salzburg, Austria, 26-29 November 2018.

    2018 - View publication details

  8. Hrdina, A.H., Moravek, A., Pattey, E., Murphy, J.G., 2018. A New Online Continuous Relaxed Eddy Accumulation Flux System Coupled with Ion Chromatographs. National Atmospheric Deposition Program Scientific Symposium and Fall Meeting, Albany NY, 5-9 November, 2018.

    2018 - View publication details

  9. Hrdina, A.H., Moravek, A., Pattey, E., Murphy, J.G., 2018. A New Online Continuous Relaxed Eddy Accumulation Flux System Coupled with Ion Chromatographs. National Atmospheric Deposition Program Scientific Symposium and Fall Meeting, Albany NY, 5-9 November, 2018.

    2018 - View publication details

  10. Moravek, A, Pattey, E., Murphy, J.G.,2018. Ammonia in agricultural and urban environments: flux measurements and aircraft observations, TFRN-13: Thirteenth Meeting of the Task Force on Reactive Nitrogen with a special focus on "Progress on ammonia in the context of the Gothenburg Protocol", Ottawa, ON, 10-12 October 2018.

    2018 - View publication details

  11. Marco Carozzi, Fiona Ehrhardt, Lorenzo Brilli, Gianni Bellocchi, Arti Bhatia, Massimiliano De Antoni Migliorati, Jordi Doltra, Luca Doro, Nuala Fitton, Peter Grace, Sandro Giacomini, Joel Léonard, Benjamin Loubet, Raia Silvia Massad, Laura Mula, Elizabeth Pattey, Joanna Sharp, Peter Smith, Ward Smith, Qing Zhang, Sylvie Recous. 2018. GRA affiliated presentation: Management practices to mitigate GHG emissions in cropping systems: a multi-model assessment. European Society for Agronomy Congress. August 27-31, Geneva Switzerland, 2018.

    2018 - View publication details

  12. Carozzi, M., Ehrhardt, F., Brilli, L., Bellocchi, G., Bathia, A., De Antoni Migliorati, M., Bregon, J.D., Dorich, C., Doror, L., Fitton, N., Grace, P., Grant, B., Giacomini, S.J., Leonard, J., Loubet, B., Massad, R.S., Mula, L., Pattey, E., Sharp, J., Smith, P., Smith, W., Zhang, Q., Recous, S. 2018. GRA affiliated presentation: Multi-Model Assessment of Mitigation Options for GHG Emissions in Croplands. 20th N Workshop and Side event, 25-27 June, 2018, Rennes, France

    2018 - View publication details

  13. Pattey, E., Mesbah, M., Jégo, 2018. Identifying NEMO: a model-based methodology to identify strategic N application rates for rainfed crop. Proceedings of 20th Nitrogen Workshop, Rennes (France), 25-27 June 2018.

    2018 - View publication details

  14. Pattey, E, Jégo, G., Mesbah, M., Liu, .J., Smith, W., VanderZaag, A., Desjardins, .R., Geng, X. 2018. Impacts of agricultural production on water in Canada – a science and technology perspective. CAPI – Agriculture and water workshop, Ottawa, ON, 21 June 2018.

    2018 - View publication details

  15. Moravek, A., S. Singh, E. Pattey, A. Hrdina, T. Li, L. Pelletier, S. Admiral, J. G. Murphy 2018. Emission and uptake of ammonia by a fertilized corn field: eddy covariance flux measurements over the growing season. Canadian Meteorological and Oceanographic Society’s 52nd Congress and Annual Meeting, Halifax (NS), 10-14 June 2018

    2018 - View publication details

  16. Pattey, E., Beringer, J., Miyata, A., Prueger, J., Ribeiro da Rocha, H., Ventura, F., Zitouna-Chebbi, R., 2017 Global inventory of agricultural flux sites. WMO- 17th Session of CAgM, Songdo Convensia, Republic of Korea. 18-20 April 2018, (Poster)

    2018 - View publication details

  17. Mesbah, M., Pattey, E., Jégo, G., Geng, X., Didier, A., Tremblay, N., (2017) " Including climate variability in determination of the optimum rate of N fertilizer application using a crop model: A case study for rainfed corn in eastern Canada." American Geophysical Union Fall meeting, New Orleans, USA, December 11-15, 2017.

    2017 - View publication details

  18. Mesbah, M., Pattey, E., Jgo, G., Liu, J., Buis, S., Lecharpentier, P., (2017). "A stochastic Bayesian approach to assimilate satellite derived LAI into STICS crop model", STICS workshop 2017, Rochelle, France, October 17-19, 2017, pp. 2 pages.

    2017 - View publication details

  19. Sandor, R and Ehrhardt, F and Basso, B and Bellocchi, G and Bhatia, A and Brilli, L and De Antoni Migliorati, M and Doltra, J and Dorich, C and Doro, L and Fitton, N and Giacomini, SJ and Grace, P and Grant, B and Harrison, MT and Jones, S and Kirschbaum, MUF and Klumpp, K and Laville, P and Leonard, J and Liebig, M and Lieffering, M and Martin, R and McAuliffe, R and Meier, E and Merbold, L and Moore, A and Myrgotis, V and Newton, P and Pattey, E and Recous, S and Rolinski, S and Sharp, J and Massad, RS and Smith, P and Smith, W and Snow, V and Wu, L and Zhang, Q and Soussana, JF, A multi-model assessment of C cycling and soil C sequestration in grasslands and croplands, Proceedings of 6th International Symposium on Soil Organic Matter, 3-7 September 2017, Harpenden, United Kingdom, pp. 1-2.

    2017 - View publication details

  20. Delogu, E., Le Dantec, V., Mordelet, P., Ceschia, E., Aubinet, M., Buysse, P., Pattey, E. (2017). Improved methodology to quantify the temperature sensitivity of the soil heterotrophic respiration in croplands, 296 18-29. http://dx.doi.org/10.1016/j.geoderma.2017.02.017

    2017 - View publication details

Research facility

960 Carling Avenue
Ottawa, ON K1A 0C6


  • Expert Team Leader for Commission for Agricultural Meteorology of World Meteorological Organization (WMO)
  • Chair of the Board on Atmospheric Biogeosciences of the American Meteorological Society (2009-15)
  • Editor of Agricultural and Forest Meteorology
  • Board Member of Agricultural and Forest Meteorology (2012-2019)
  • Scientific steering committee of CarboNA
  • Agricultural Institute of Canada
  • American Geophysical Union
  • American Society of Agronomy
  • Canadian Meteorological and Oceanographic Society
  • Canadian Remote Sensing Society
  • Remote Sensing Society of Quebec
  • Adjunct Professor, Department of Renewable Resources, McGill University (2002-2009)
  • President (-elect and past-) of the Canadian Society of Agricultural and Forest Meteorology (2004-2006)