Latest News & Publications

2021 / 06 / 11
Stephen, on behalf of co-authors Tricia Stadnyk, Tara Troy and Marco Hernandez-Henriquez, presented a talk titled "Establishing watershed connectivity using a weekly hydropeaking index applied to American and Canadian rivers" at the Canadian Association of Geographer's meeting and congress.

2021 / 06 / 09
Stephen was co-covener for a session on atmospheric rivers and extratropical cyclones at the 55th annual CMOS congress.

2021 / 05 / 26
Stadnyk, T. A., Tefs, A., Broesky, M., Déry, S. J., Myers, P. G., Ridenour, N., Vonderbank, L., and Gustafsson, D., 2021: Changing freshwater contributions to the Arctic: A 90-year trend analysis (1981-2070), Elementa: Science of the Anthropocene, 9(1), 00098. Full Document

2021 / 05 / 26
Stephen presented an update on research related to climate change and water security in the Nechako Watershed to the Nechako Watershed Roundtable.

2021 / 05 / 14
Kelly, Derek, Spencer and Stephen met with representatives from the Cheslatta Carrier Nation and Rio Tinto staff at the Skins Lake Spillway as we prepare for a busy 2021 summer field season!

2021 / 05 / 03
The NHG welcomes Derek Gilbert and Spencer Woyke as field/research assistants. Welcome to both of you!

2021 / 05 / 03
Stephen did an interview for CBC's The National on the recent washouts in the Cariboos and possible links to climate change.

2021 / 04 / 29
Stephen, on behalf of co-authors Tricia Stadnyk, Tara Troy and Marco Hernandez-Henriquez, presented a talk titled "Vanishing weekly cycles in American and Canadian hydropeaking rivers" at the EGU21 conference.

2021 / 04 / 19
Tefs, A. A. G., Stadnyk, T. A., Koenig, K. A., Déry, S. J., MacDonald, M. K., Slota, P., Crawford, J., Hamilton, M., 2021: Simulating river regulation and reservoir performance in a continental-scale hydrologic model, Environmental Modelling & Software, 141, 105025. Full Document

2021 / 03 / 26
Stadnyk, T. A., and Déry, S. J., 2021: Canadian continental-scale hydrology under a changing climate: A review, Water. 13, 906. Full Document

2021 / 03 / 24
Thériault, J. M., Déry, S. J., Pomeroy, J. W., Smith, H. M., Almonte, J., Bertoncini, A., Crawford, R., Desroches-Lapointe, A., Lachapelle, M., Mariani, Z., Mitchell, S., Morris, J. E., Hébert-Pinard, C., Rodriguez, P., and Thompson, H. D., 2021: Meteorological observations collected during the Storms and Precipitation Across the continental Divide Experiment (SPADE), April-June 2019, Earth System Science Data, 13, 1233-1249. Full Document

2021 / 03 / 17
Welcome the spring equinox by reading the March 2021 issue of the Nechako IRC Newsletter!

2021 / 02 / 23
Stephen along with UNBC colleagues Drs. Phil Owens, Margot Parkes and Ellen Petticrew participated in a public presentation on integrated watershed research in the Nechako.

2021 / 02 / 10
Stephen delivered a talk titled "Climate change and water security research at UNBC" to the Main Table of the Water Engagement Initiative.

2021 / 01 / 13
Pokorny, S., Stadnyk, T. A., Ali, G., Lilhare, R., Déry, S. J., and Koenig, K. A., 2021: Cumulative effects of uncertainty on simulated streamflow in a hydrologic modeling environment, Elementa: Science of the Anthropocene, 9(1), 431. Full Document

2021 / 01 / 01
Lisa Rickard and Charlotte Adams join the Northern Hydrometeorology Group as M.Sc. students. Welcome Lisa and Charlotte!

2020 / 01 / 01
The NHG wishes everyone a safe and Happy New Year! All the best in 2021!

2020 / 12 / 18
The December 2020 issue of the Nechako IRC Newsletter is now available.

2020 / 12 / 01
Jeremy presented his latest research findings at a BC Parks symposium.

2020 / 11 / 23
We welcome Spencer Woyke as a part-time undergraduate assistant in the Northern Hydrometeorology Group. Welcome Spencer!

2020 / 11 / 23
Stephen is elected to the Board of Directors of the Pacific Climate Impacts Consortium.

2020 / 11 / 01
We are pleased to announce the activation of the new NSERC / Rio Tinto IRC website! Consult this website for information on the Nechako Watershed, our IRC project goals, participants and partners, publications and data, and much more!

2020 / 10 / 19
The NHG welcomes Kelly Hurley as a Research Skills Trainee under the IRC umbrella of research. Welcome to the group Kelly!

2020 / 10 / 07
The latest IRC quarterly newsletter is now available here.

2020 / 10 / 02
Pokorny, S., Stadnyk, T. A., Lilhare, R., Ali, G., Déry, S. J., and Koenig, K. A., 2020: Use of ensemble-based gridded precipitation products for assessing input data uncertainty prior to hydrologic modeling, Water, 12(10), 2751. Full Document

2020 / 09 / 17
Sharma, A. R., and Déry, S. J., 2020: Linking atmospheric rivers to annual and extreme runoff in British Columbia and southeastern Alaska, Journal of Hydrometeorology, 21(11), 2457-2472, doi: 10.1175/JHM-D-19-0281.1. Full Document

2020 / 09 / 13
Vore, M. E., Déry, S. J., Hou, Y., and Wei, A., 2020: Climatic influences on forest fire and mountain pine beetle outbreaks and resulting runoff effects in large watersheds in British Columbia, Canada, Hydrological Processes, 34, 4560-4575, doi: https://doi.org/10.1002/hyp.13908. Full Document.

2020 / 09 / 03
The NHG welcomes Tamar Richards-Thomas as a Research Skills Trainee, Bruno Sobral as a PhD student and Adam MacDonald as an MSc student. Welcome to the group!

2020 / 09 / 03
Brown, R., Marsh, P., Déry, S. J., and Yang, D., 2020: Chapter 3: Snow cover - observations, processes, changes and impacts on northern hydrology, Arctic Hydrology, Permafrost and Ecosystem, Springer, 61-99.

2020 / 09 / 03
Shiklomanov, A. I., Déry, S. J., Tretiakov, M. V., Yang, D., Magritsky, D., Georgiadi, A., Tang, W., 2020: Chapter 24: River flux to the Arctic Ocean, Arctic Hydrology, Permafrost and Ecosystem, Springer, 703-738.

2020 / 08 / 19
Stadnyk, T. A., MacDonald, M. K., Tefs, A. A. G., Déry, S. J., Koenig, K., Gustafsson, D., Isberg, K., and Arheimer, B., 2020: Hydrological modeling of freshwater discharge into Hudson Bay using HYPE, Elementa: Science of the Anthropocene, 8, 43. doi: 10.1525/elementa.439 Full Document

2020 / 08 / 17
Allchin, M. and Déry, S. J., 2020: The climatological context of trends in the onset of Northern Hemisphere seasonal snowcover, 1972-2017, Journal of Geophysical Research: Atmospheres, 125(17), e2019JD032367, doi: 10.1029/2019JD032367. Full Document

2020 / 07 / 08
Stephen was interviewed by Dave Branco of CKPG News to discuss the recent wet weather and flood potential in northern BC. Listen to their discussion here.

2020 / 06 / 30
The NSERC/Rio Tinto Industrial Research Chair completes the first year of its program of research. Read full details on our progress thus far and plans for the 2020 summer field season in this UNBC story! For a full update, please consult the 2019-2020 Annual Report.

2020 / 06 / 29
Hamilton, A. K., Laval, B. E., Petticrew, E. L., Albers, S. J., Allchin, M., Baldwin, S. A., Carmack, E. C., Déry, S. J., French, T. D., Granger, B., Graves, K. E., Owens, P. N., Selbie, D. T., and Vagle, S., 2020: Seasonal turbidity linked to physical dynamics in a deep lake following the catastrophic 2014 Mount Polley mine tailings spill, Water Resources Research, 56(8), e2019WR025790. Full Document

2020 / 06 / 26
Congratulations to Aseem and Michael on graduating with their doctorate degrees at today's convocation! Special kudos to Michael on also being awarded the Governor General's Gold Medal for the exceptional quality of his dissertation!

2020 / 06 / 20
The June quarterly newsletter for the IRC program of research is now available online.

2020 / 06 / 04
Rajtantra, co-supervised by Dr. Tricia Stadnyk at the University of Calgary, successfully defended his doctoral dissertation entitled: "Assessing the effects of uncertainty and climate change on hydrological simulations across a permafrost gradient in north-central Canada." Congratulations Raj!

2020 / 05 / 11
The NHG welcomes Natalya Klutz as a field/research assistant, and Marco Hernandez-Henriquez as a part-time Research Associate. Welcome (back) to both of you!

2020 / 05 / 04
The NHG welcomes Daniel Scurfield as a field/research assistant, Justin Kokoszka as an MSc student, and Aseem Sharma in his new role as a post-doctoral fellow with the group. Welcome to all of you!

2020 / 04 / 24
Michael successfully defended his PhD dissertation entitled "A spatio-temporal analysis of trends in Northern Hemisphere seasonal snow-cover, 1971-2017". Congratulations Michael!

2020 / 04 / 20
Brubacher, J., Allen, D. M., Déry, S. J., Parkes, M. W., Chhetri, B., Mak, S., Sobie, S., and Takaro, T. K., 2020: Associations of five food- and water-borne diseases and ecological zone, land use, and aquifer type in a changing climate, Science of the Total Environment, 138808, doi: 10.1016/j.scitotenv.2020.138808. Full Document

2020 / 04 / 17
Aseem successfully defended his PhD dissertation entitled "Role of atmospheric rivers on the hydrology of western Canada". Congratulations Aseem!

2020 / 04 / 16
Sharma, A. R., and Déry, S. J., 2020: Contribution of atmospheric rivers to annual, seasonal, and extreme precipitation across British Columbia and southeastern Alaska, Journal of Geophysical Research: Atmospheres, 125(9), e2019JD031823. Full Document

2020 / 04 / 01
Picketts, I. M., Déry, S. J., Parkes, M. W., Sharma, A. R., and Matthews, C. A., 2020: Scenarios of climate change and natural resource development: complexity and uncertainty in the Nechako Watershed, The Canadian Geographer, 64(3), 475-488, doi: 10.1111/cag.12609. Full Document

2020 / 03 / 20
Thompson, H. D., Déry, S. J., Jackson, P. L., and Laval, B. E., 2020: A synoptic climatology of potential seiche-inducing winds in a large intermontane lake: Quesnel Lake, British Columbia, Canada, International Journal of Climatology, 40(14), 5973-5986, doi: 10.1002/joc.6560. Full Document

2020 / 03 / 19
The second quarterly newsletter for the IRC program of research is now available online.

2020 / 02 / 18
Lilhare, R., Pokorny, S., Déry, S. J., Stadnyk, T. A., and Koenig, K. A., 2020: Sensitivity analysis and uncertainty assessment in water budgets simulated by the Variable Infiltration Capacity model in Canadian sub-arctic watersheds, Hydrological Processes, 34(9), 2057-2075. Full Document

2020 / 01 / 25
Stephen along with colleagues Drs. Kinnard and Rousseau are guest editors for a special issue of Water on cold regions hydrology in a changing climate. Consult the special issue description for further details. The article submission deadline for the special issue is August 31st, 2020.

2020 / 01 / 13
Li, Z., Shi, X., Tang, Q., Zhang, Y., Gao, H., Pan, X., Déry, S. J., Zhou, P., 2020: Partitioning the contributions of glacier melt and precipitation to the 1971-2010 runoff increases in a headwater basin of the Tarim River, Journal of Hydrology, 583, 124579. Full Document

2020 / 01 / 02
Sharma, A. R. and Déry, S. J., 2020: Variability and trends of landfalling atmospheric rivers along the Pacific Coast of northwestern North America, International Journal of Climatology, 40(1), 544-558. Full Document

2019 / 12 / 18
The first quarterly newsletter for the IRC program of research is now available online. The NHG and the IRC teams wish everyone very Happy Holidays!

2019 / 11 / 04
Stephen is named the NSERC/Rio Tinto Senior Industrial Research Chair (IRC) in Climate Change and Water Security. For details on this program of research, consult the IRC website and the media release issued jointly between UNBC and Rio Tinto.

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Introduction

Welcome to the homepage of the northern hydrometeorology group (NHG) at the University of Northern British Columbia (UNBC) in Prince George, British Columbia, Canada.

The NHG investigates the role of climate variability and climate change on the high-latitude and alpine water cycle. The research group is led by Stephen Déry, a tenured, full professor in the Environmental Science and Engineering Program of UNBC, as well as a member of UNBC's Natural Resources and Environmental Studies Institute (NRESi). Details on the NHG's research including projects, funding sources, and members are found here.

A recent curriculum vitae and biography for Stephen are available online.