header-photo

Julie M. Thériault, Professor

image sample
Office: PK-6430

Phone: (514) 987-3000 ext: 4276

Email

Research Topic: Winter precipitation types, process study, formation mechanisms, measurement at the ground, interactions with the environmental conditions and their evolution with our changing climate. [More Info]


Education


  • BSc Physics, Université de Moncton, 2002
  • MSc Atmospheric Sciences, McGill University, 2004
  • PhD Atmospheric Sciences, McGill University,2009
  • APS Postodc, National Center for Atmospheric Research 2009-11

Research Interests


image sample

The different types of precipitation associated with winter storms can cause major inconveniences for our societies. These can be from major power outages to disruption of air and ground transportation. The different types of precipitation commonly observed are on the form of freezing rain, ice pellets and wet snow. Their formation mechanisms are complex because they are associated with temperatures around 0°C meaning that only a small change in temperature can affect dramatically the severity of the storm. This research program aims to better understand their formation mechanisms and the impact on the mesoscale circulation induced by phase changes. Numerical modelling is the key tool to achieve our goal. Currently, the weather prediction models are limited in terms of predicting precipitation. The resolution of small-scale meteorological processes is becoming increasingly important with the increasing power of computers. In summary, this research program will contribute to a better understanding of the role of different types of winter precipitation on predicting short-and long-term extreme winter weather events.


Research Team


  • Alix Brun-Berthet, UdeM [Stagiaire, Été 2018]
    Title: Climatology of the temperature and precipitation across the continental divide in the Canadian Rockies

  • Charles Moderie, UdeM [Stagiaire, Été 2018]
    Title: Idealized simulations of particle trajectories in complex terrain

  • Karel Veilleux, UQAM [Stagiaire, Été 2018]
    Title: Climatology analysis of near 0°C conditions in the Montreal area

  • Vanessa McFadden, UQAM [MSc, 2016-2018]
    Title: Case study of the ice storm in N.-B. in January 2017

  • Médéric St-Pierre, UQAM [MSc, 2015-2018]
    Title: Influence of the RCM horizontal grid spacing on the atmospheric conditions leading to freezing rain

  • Obert Tchuem, UQAM [PhD, 2017- ]
    Title: Extreme cold season events over the eastern slopes of the Canadian Rockies

  • Sébastien Marinier, UQAM [PhD,2017- ]
    Title: Evolution of freezing rain and ice pellets over southern Quebec in a warmer and moisture climate

  • Mélissa CHOLETTE, UQAM [PhD, 2014- ]
    Title: Microphysics of freezing rain and ice pellets

Field Campaigns

image sample
















  • GWF-Storms and precipitation across the continental divide experiment (SPADE)
    Study precipitation and storms passing accross the continental divide using numerical experiments as well as field observations that will be collected in May and June 2019.

  • CCRN Alberta Field Project - Atmospheric part
    Document and collect observations of precipitation and associated weather conditions in the Kananasksis Valley, Alberta, during March and April 2015.

  • Satellite Applications for Arctic Weather and Search and Rescue Operations [SAAWSO]
    Data analysis of freezing rain and ice pellets events
    St-John's, New Foundland [Winter 2013]

  • Science of NOWcasting of Olympic Weather for Vancouver 2010 [SNOW-V10]
    Responsible of data collection and micro-photography of snow crystals
    Whistler, British Columbia [Winter 2009 et 2010]

  • Canadian CloudSat/CALIPSO Validation Project [C3VP]
    Responsible of data collection and micro-photography of snow crystals
    Alliston, Ontario [Winter 2006-2007]


Publications


2018

Accepted

Thériault, J. M., I. Hung, P. Vaquer, R. E. Stewart and J. W. Pomeroy (2018) Precipitation characteristics and associated weather conditions on the eastern slopes of the Rocky Mountains during March-April 2015, Hydrol. Earth Syst. Sci. [Accepted HESS-2018-131]

Under review

St-Pierre, M., J.M. Thériault and D. Paquin (2018) Influence of the model spatial resolution on atmospheric conditions leading to freezing rain in regional climate simulations, Atmos-Ocean, [Under review].

2017

Li, Y., Szeto, K., Stewart, R.E., et al. (2017). A numerical study of the June 2013 flood-producing extreme rainstorm over southern Alberta. Journal of hydrometeorology, 18(8), 2057-2078.

Matte, D., Thériault, J.M. et Laprise, R. (2017). Climate change study of mixed precipitation oversouthern Quebec using a Regional Climate Model. Climate Dynamics.

Bresson, E., Laprise, R., Paquin, D., Thériault, J.M. et De Elia, R. (2017). Evaluating CRCM5 ability to simulate mixed precipitation. Atmosphere-Ocean, 55(2), 79-93.

Barszcz, A., Milbrandt, J.A. et Thériault, J.M. (2017). Improving the explicit prediction of freezing rain in a km-scalenumerical weather prediction model. Weather and Forecasting.

2016

Matte, D., Laprise, R. et Thériault, J.M. (2016). Comparison between high-resolution climate simulations using single and double nesting within the Big-Brother experimental protocol. Climate Dynamics, 47(12), 3613-3626.

Sankaré, H. et Thériault, J.M. (2016). On the relationship between the snowflake type aloft and the surface precipitation types at temperatures near 0°C. Atmospheric Research, 180, 287-296.

Matte, D., Laprise, R., Thériault, J.M. et Lucas-Picher, P. (2016). Spatial spin-up of fine scales in a regional climate model simulation driven by low-resolution boundary conditions. Climate Dynamics, 49(1), 563-574.

Colli, M., Lanza, L.G., Rasmussen, R. et Thériault, J.M. (2016). The collection efficiency of shielded and unshielded precipitation gauges: Part 1: CDF airflow modelling. Journal of hydrometeorology, 17(1), 231-243.

Colli, M., Lanza, L.G., Rasmussen, R. et Thériault, J.M. (2016). The collection efficiency of shielded and unshielded precipitation gauges: Part 2: Modeling particle trajectories. Journal of hydrometeorology, 17(1), 245-255.

Liu, A., Mooney, C., Szeto, K., et al. (2016). The June 2013 Alberta Catastrophic Flooding Event : Part 1 - Climatological aspects and hydrometeorological features. Hydrological Processes, 30(26), 4899-4916.

Kochtubajda, B., Stewart, R.E., Boodoo, S., et al. (2016). The June 2013 Alberta Catastrophic Flooding Event : Part 2 - Fine-scale precipitation and associated features. Hydrological Processes, 30(26), 4917-4933.

2015

Colli, M., Rasmussen, R., Theriault, J.M., Lanza, L.G., Baker, C.B. et Kochendorfer, J. (2015). An improved trajectory model to evaluate the collection performance of snow gauges. Journal Of Applied Meteorology And Climatology, 54(1826-1836), 1826-1836.

St-Pierre, M. et Thériault, J.M. (2015). Clarification of the water saturation represented on ice crystal growth diagrams. Journal of the atmospheric sciences, 72(7), 2608-2611.

Thériault, J.M., Milbrandt, J.A., Doyle, J., et al. (2015). Impact of melting snow on the valley flow field and precipitation phase transition. Atmospheric Research, 156, 111-124.

Thériault, J.M., Rasmussen, R., Petro, E., Trépanier, J.-Y., Colli, M. et Lanza, L.G. (2015). Impact of wind direction, wind speed, and particle characteristics on the collection efficiency of the double fence intercomparison reference. Journal of Applied Meteorology and Climatology, 54(9), 1918-1930.

Stewart, R.E., Thériault, J.M., Henson et W. (2015). On the characteristics of and processes producing winter precipitation types near 0°C. Bulletin of the American Meteorological Society, 96, 623-639.

Cholette, M., Laprise, R. et Thériault, J.M. (2015). Perspectives for kilometer-scale regional climate simulations and projections : Illustration of potential in simulating St. Lawrence River Valley channelling winds with the Canadian Regional Climate Model. Climate, 32(2), 283-307.

2014
Milbrandt, J., Thériault, J.M. et Mo, R. (2014). Modeling the phase transition associated with melting snow in a 1D kinematic framework: Sensitivity to the microphysics. Pure and Applied Geophysics, 17(1), 303-322.

Gultepe I., Isaac, G.A., Kucera, P., Thériault, J.M. et Fisico, T. (2014). Roundhouse (RND) mountain-top research site during SNOW-V10: Measurements an uncertainties. Pure and Applied Geophysics, 171(1/2), 59-85.

Joe, P., Scott, B., Doyle, C., et al. (2014). The monitoring network of the Vancouver 2010 Olympics. Pure and Applied Geophysics, 171(1), 25-58.

Thériault, J.M., Rasmussen, K., Fisico, T., et al. (2014). Weather observations along Whistler Mountain in five storms during SNOWV10. Pure and Applied Geophysics, 17(1), 129-155.

2013
Muhlbauer, A., Grabowski, W.W., Malinowski, S.P., et al. (2013). Reexamination of the state of the art of cloud modeling shows real improvements. Bulletin of the American Meteorological Society, 94(5), ES45-ES48.

2012

Thériault, J.M., Rasmussen, R., Smith, T., et al. (2012). A case study of processes impacting precipitation phase and intensity during the vancouver 2010 winter olympics. Weather and Forecasting, 27(6), 1301-1325.

Thériault, J.M., Rasmussen, R., Ikeda, K. et Landolt, S. (2012). Dependence of snow gauge collection efficiency on snowflake characteristics. Journal of Applied Meteorology and Climatology, 51(4), 745-762.

Rasmussen, R., Baker, B., Kochendorfer, J., et al. (2012). How well are we measuring snow: The NOAA/FAA/NCAR winter precipitation test bed. Bulletin of the American Meteorological Society, 93(6), 811-829.

Thériault, J.M., Stewart, R.E. et Henson, W. (2012). Impacts of terminal velocity on the trajectory of winter precipitation types. Atmospheric Research, 116, 116-129.

2006-2011

Before 2011: The complete is available in the tab Publications-Article scientifiques

Conferences and Workshops


Conference and workshop presentations are available in the tab Communications

Former Members

Undergraduate Students

  • Minh Nguyen, UQAM [Été 2017]
    Title: Preliminary analysis of the WRF-4 km simulations during March and April 2015 over the eastern slopes of the Canadian Rockies

  • Aurélie Desroches-Lapointe, UQAM [Été 2016]
    Title: Method to detect the type of precipitation automatically.

  • Vanessa McFadden, UQAM [Étés 2015 et 2016]
    Title: Climatology study of freezing rain over sourthern Quebec using RCMs

  • Patrick Duplessis, UQAM [Été 2015]
    Title: Precipitation types during the Alberta Flooding event in 2013

  • Laetitia Chomette, UQAM [Printemps 2015]
    Title: Preliminary analysis of freezing rain using regional climate models
  • Paul Vaquer, UQAM [Été 2014]
    Title: Preliminary development of a user-friendly interface to use a one-dimensional cloud model

  • Emilie Poirier, UQAM [Été 2014]
    Title: Rain-snow transition across the St. Lawrence River Valley

  • Médéric St-Pierre, UQAM [Été 2014]
    Title: Development of a database of precipitation over eastern Canada

  • Flora Viale, UQAM [Étés 2013 et 2014]
    Title 2013: Gauge collection efficiency when the temperature is near 0°C Title 2014: Climatology of the rain-snow transition along Whistler Mountain

  • Marilys Clement, UQAM [Été 2012]
    Title: Snowflake type analysis over Whistler, Colombie-Britannique

  • Tristan Perotin, École Polytechnique Paris [Été 2012]
    Title: Preliminary analysis of the impact of melting on the valley flow field using numerical simulations

  • Médéric St-Pierre, UQAM [Été 2013]
    Title: Ice crystal growth - Kobayashi diagram

Masters

  • Agnès Barzcs, UQAM [2014-2016]
    Title: Impact of collision-freezing on the production of freezing rain

  • Paul Vaquer, UQAM [2014-2016]
    Title: Link between the precipitation types and the weather conditions in the Kananaskis Valley, Alberta

  • Emilie Poirier, UQAM [2014-2016]
    Title: Rain-snow transitions on the eastern slopes of the Canadian Rockies

  • Housseyni Sankaré, UQAM [2012-2015]
    Title: Impacts of snowflake types on the precipitation type reaching the surface

PhDs

  • Dominic Matte, UQAM [2011-2017] Co-supervision René Laprise
    Title: High resolution climate resolution and application to the changes in freezing rain in the future

Postdocs

  • Dominic Matte, UQAM [2018]
    Title: Preliminary study of the changes in weather event types over the eastern slopes of the Canadian Rockies using the WRF-4 km simulations

  • Emilie Bresson, UQAM [2015,2016] Co-superviser René Laprise
    Title: High resolution climate simulation of atmospheric conditions leading to freezing rain

Research assistant

  • Johnathan Doyle, UQAM [2011-2012]
    Title: Impact of melting snow on the direction of the valley flow field in the Whistler area.