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Julie M. Thériault, Assistant Professor

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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


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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.


My Team


Summer Students

  • Marilys CLEMENT, UQAM [Summer 2012]
    Topic: Study snowflakes types in the Whistler Area, British Columbia.

  • Tristan PEROTIN, Ecole Polytechnique Paris [Summer 2012]
    Topic: Link between the precipitaiton type and the surface temperature.

  • Médéric ST-PIERRE, UQAM [Summer 2013] [Scholarship from the Faculty of Science]
    Topic: Ice crystal growth

  • Flora VIALE, UQAM [Summer 2013]
    Topic: Collection of snow gauge with varying surface temperature


Master's

  • Housseyni SANKARE, UQAM [2012- ]
    Topic: Impacts of snowflake types on the type of winter precipitation at the surface

Doctorate

  • Mélissa Cholette, UQAM [2014- ]
    Topic: Freezing rain occurrence over Eastern Canada

  • Jonathan DOYLE, UQAM [2012- ] [NSERC Scholarship]
    Topic: Microphysical processes associated with Arctic mixed phase clouds

  • Dominic MATTE, UQAM [2011- ] Co-superviser René Laprise
    Topic: Climate variability during the winter season in Eastern Canada

Field Campaigns

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  • Spring 2015 Field experiment, CCRN
    Study heavy precipitation events on the lee side of the Rocky Mountains.
    Banff Area, Alberta [Winter 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


Thériault, J. M., K. L. Rasmussen, T. Fisico, R. E. Stewart, P. Joe, I. Gueltepe, Marilys Clément and G.A. Isaac (2013), Weather Observations Along Whistler Mountain in Five Storms During SNOW-V10, J. Pure Appl. Geophys. [In Press]

Gultepe I., G. A. Isaac, P. Kucera, J. M. Thériault, T. Fisico (2013), Roundhouse (RND) mountain-top research site during SNOW-V10: Measurements an uncertainties, J. Pure Appl. Geophys. [In Press]

Joe, P., B. Scott, C. Doyle, G. A. Isaac, I. Gultepe, D. Forsyth, S. Cober, E. Campos, I. Heckman, N. Donaldson, D. Hudak, R. Rasmussen, P. Kucera, R. Stewart, J. M. Thériault, T. Fisico, K. L. Rasmussen, H. Carmichael, A. Laplante, M. Bailey, F. Boudala (2013), The monitoring network of the Vancouver 2010 Olympics, J. Pure Appl. Geophys. [In Press]

Milbrandt, J. A., J. M. Thériault and R. Mo (2013), Modeling the Phase Transition associated with Melting Snow in a 1D Kinematic Framework: Sensitivity to the Microphysics, J. Pure Appl. Geophys. [In Press]

Muhlbauer A., W. W. Grabowski, S. P. Malinowski, T. P. Ackerman, G. H. Bryan, Z. J. Lebo, J. A. Milbrandt, H. Morrison, M. Ovchinnikov, S. Tessendorf, J.M. Thériault, G. Thompson (2013) Reexamination of the State of the Art of Cloud Modeling Shows Real Improvements, Bull. Amer. Meteor. Soc., 94, ES45-ES48.

Thériault, J. M., R. Rasmussen, T. Smith, M. Brugman, J. Milbrandt, R. Mo, G. Isaac, P. Joe, J. Mailhot and B. Denis (2012), A Case Study of Processes Impacting Precipitation Phase and Intensity during the Vancouver 2010 Winter Olympics, \textit{Wea. and Forecasting}, 27, 1301-1325.

Stoelinga, M. T., R. E. Stewart, G. Thompson and J. M. Thériault (2012), Chapter 7: Microphysical processes within orographic cloud and precipitation systems, Mountain Weather Research and Forecasting: Recent Progress and Current Challenges, Springer, 763pp.

Rasmussen, R., B. Baker, J. Kochendorfer, T. Meyers, S. Landolt, A. P. Fischer, J. Black, J. M. Thériault, P. Kucera, D. Gochis, C. Smith, R. Nitu, M. Hall, S. Cristanelli and E. Gutmann (2012), The NOAA/FAA/NCAR winter precipitation test bed: How well are we measuring snow?, Bull. Amer. Meteor. Soc., 93, 811-829.

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

Thériault, J. M., R. Rasmussen, K. Ikeda and S. Landolt (2012), Dependence of snow gauge collection efficiency on snowflake characteristics , J. Appl. Clim Meteorol, 51, 745-762.

Henson, W., R. E. Stewart, B. Kochtubaja and J. M. Thériault (2011), The 1998 Ice Storm: Flow field and linkage to precipitation, Atmos. Res., 101, 852-862

Carmichael, H.E., R. E. Stewart, W. Henson and J.M. Thériault (2011), Environmental conditions favouring ice pellets aggregation, Atmos. Res., 101, 844-851

Thériault, J. M., R. E. Stewart and W. Henson (2010), On the dependence of winter precipitation types on temperature, precipitation rate and associated features, J. Appl. Clim Meteorol., 49, 1429-1442

Thériault, J. M. and R. E. Stewart (2010), A parameterization of the microphysical processes associated with many types of winter precipitation, J. Atmos. Sci., 67, 1492-1508

Thériault, J. M. and R. E. Stewart (2007), On the effects of vertical air velocity on winter precipitation types, Nat. Hazards Earth Syst. Sci., 7, 231-242

Thériault, J. M., R. E. Stewart, J. A. Milbrandt, and M. K. Yau (2006), On the simulation of winter precipitation types, J. Geophys. Res., 111, D18202, doi:10.1029/2005JD006665

Conferences and Workshops


Doyle, J. and J. M. Thériault (2013) Microphysical processes associated with the formation of Arctic mixed-phase clouds, CMOS, Saskatoon. [Oral Presentation]

Thériault, J. M., J.-Y. Trépanier, E. Petro, R. Rasmussen, J. Hoover, R. Nitu and M. Coli (213) Simulations of precipitation gauge collection efficiency, CMOS, Saskatoon. [Oral Presentation]

Thériault, J. M., J. Doyle, J. A. Milbrandt, G. Thompson, J. R. Minder (2013), Link between the direction of the valley flow and melting snow, CMOS, Saskatoon. [Oral Presentation]

Thériault, J. M.(2013), Formation processes and measurements of winter precipitation types, Montréal, Canada, Regional Climate modelling Workshop, Montréal, Québec [Oral Presentation]

Thériault, J. M., J.A. Milbrandt, R. Mo and J. Doyle (2012), Sensitivity of microphysical processes to the precipitation phase transition during a winter storm during the Vancouver 2010 Winter Olympics, International Cloud and Precipitation Conference, Leipzig, Germany [Poster Presentation]

Thériault, J. M., J.A. Milbrandt and J. Doyle (2012), Case 5: Orographically-enhanced winter snowstorm, International Cloud Modeling Workshop, Warsaw Poland [Oral Presentation]

Thériault, J. M., R. Rasmussen, K. Ikeda and S. Landolt (2012), Dependance of snow gauge collection efficiency on snowflake characteristic, WMO-SPICE Workshop, Boulder, Colorado [Invitation, Oral Presentation]

Thériault, J. M., J. A. Milbrandt, R. Mo and J. Doyle (2012), Effects of microphysical processes on the wind fields over complex terrain during the Vancouver 2010 Winter Olympics, CMOS Congress, Montréal, Québec [Poster Presentation]

Gauthier, P., L. Sushama, M. Bourqui, R. Laprise, P. Yau and J. Thériault (2012), A numerical research laboratory for the observation and modeling of the Earth system. CMOS Congress, Montréal, Québec [Oral Presentation]

Thériault, J. M., R. Rasmussen, K. Ikeda and S. Landolt (2012), Dependance of snow gauge collection efficiency on snowflake characteristic, C-SPICE Workshop}, Saskatoon, Saskatchewan [Invitation, Oral Presentation]

Thériault, J. M., R. Rasmussen, K. Ikeda and S. Landolt (2012), Theoretical study on the correlation between snowflake type and gauge collection efficiency, Congrès annuel de AMS, Nouvelle Orléans, Louisiane [Oral Presentation]

Thériault, J. M., Rasmussen, R., T. Smith, M. Brugman, J. Milbrandt, R. Mo, G. Isaac, P. Joe, J. Mailhot and B. Denis (2010), A case study of diabatic cooling of melting snow during the 2010 Vancouver Olympics, CMOS Congress, Victoria, BC. [Oral Presentation]

Thériault, J. M., R. Rasmussen, K. Ikeda, S. Landolt (2011), Relationship between snow gauge collection efficiency and snowflake type, CMOS Congress, Victoria, BC. [Oral Presentation]

Thériault, J. M., Kyoko Ikeda, Roy Rasmussen, Scott Landolt, Sara Ziegler and Al Jachcik (2011), Effects of snowflake characteristics on the collection efficiency of snow gauge, Annual AMS, Seattle,WA [Poster presentation]

Thériault, J. M., Rasmussen, R.*, T. Smith, M. Brugman, J. Milbrandt, R. Mo, G. Isaac, P. Joe, J. Mailhot and B. Denis (2011), Effects of diabatic cooling of melting snow : February 13-14 case study, SNOW-V10 Workshop, Deerhurst, Canada. [Oral Presentation]

Thériault, J. M., K. Ikeda, R. Rasmussen, S. Landolt, S. Ziegler and A. Jachcik (2010), The relationship between snowflake characteristics and snow gauge collection efficiency, AGU, San Francisco, US [Poster presentation]

Thériault, J. M., R. Rasmussen, K. Ikeda, S. Landolt, A. Jachcik and S. Ziegler (2010), Characteristics of snowflakes falling into a snow gauge, CMOS Congress, Ottawa, CANADA [Oral presentation]

Thériault, J. M. and R. E. Stewart (2008), Rain-snow boundaries along mountainsides, AMS Mountain Meteorology Conference, Whistler, Canada [Oral presentation]

Thériault, J. M., R. E. Stewart and W. Henson (2008), On the formation of winter precipitation types, CMOS Congress, Kelowna, Canada [Oral presentation]

Thériault, J. M., R. E. Stewart and. W. Henson (2007), On the formation of winter precipitation types favourable for icing on structures, International Workshop on Atmospheric Icing of Structures, Yokohama, Japan [OPENING ORAL PRESENTATION OF THE WORKSHOP]

Thériault, J. M. and R. E. Stewart (2006), A mixed-phase precipitation simulation scheme that predicts different types of winter precipitation, European Geosciences Union, Vienna, Austria [Oral presentation]

Thériault, J. M. and R. E. Stewart (2005), Winter precipitation types and icing at the surface, International Workshop on Atmospheric Icing of Structures, Montreal, CANADA [Oral presentation]

Thériault, J. M. and R. E. Stewart (2005), Numerical studies on winter precipitation type formation, CMOS Congress, Vancouver, CANADA [Oral presentation]

Thériault, J. M., R. E. Stewart, J. A. Milbrandt and M. K. Yau (2004), On the production of winter precipitation types and associated visibility changes, AGU Congress, Montreal, CANADA [Poster presentation]

Thériault, J. M., R. E. Stewart, J. A. Milbrandt and M. K. Yau (2004), Winter precipitation formation and its impact on visibility, CMOS Congress, Edmonton, CANADA [Oral presentation]