H085
Changing Snow Regime and Hydrologic Extremes in Alpine Dominated Watersheds
Session ID#: 76993
Session Description:
Flows originating from alpine dominated cold region watersheds are generally sustained by snow and glacier meltwater. They typically experience extended cold season low flows, followed by spring snowmelt and summer rainfall driven high flows. In a warming climate, there will be temperature- induced shift in precipitation from snow towards rain affecting the snowpack volume as well as changes in glacier dynamics and snowmelt timing affecting the stream flow regime. These changes in snow regimes together with the possible increases in rain-on-snow and atmospheric river events will affect the frequency of extreme high and low flow events that could impact infrastructures and alter ecosystem services. Therefore, this session seeks presentations that address observed and projected changes in snowpack and the resulting changes in the frequency and severity of hydrologic extremes in alpine dominated watersheds. Research findings using new and emerging methods and tools, including non-stationary analysis of hydrologic extremes are sought.
Co-Organized:
Index Terms:
1807 Climate impacts [HYDROLOGY]
1817 Extreme events [HYDROLOGY]
1860 Streamflow [HYDROLOGY]
1863 Snow and ice [HYDROLOGY]
Primary Convener: Yonas B Dibike, Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Victoria, BC, Canada
Conveners: Rajesh R Shrestha, Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Victoria, BC, Canada, Chris Spence, Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Saskatoon, SK, Canada and Paulin DL Coulibaly, McMaster University, Department of Civil Engineering and SGES, Hamilton, ON, Canada
Primary Liaison: Yonas B Dibike, Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Victoria, BC, Canada
Spatial Variation in Hydro-climatic Controls of Annual Peak Flows in Western Canadian Watersheds (489698)
Yonas B Dibike1, Brandi Newton2, Rajesh R Shrestha1, Barrie Bonsal3 and Colin Johnson4, (1)Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Victoria, BC, Canada, (2)Alberta Environment and Parks, Environmental Monitoring and Science Division, Calgary, AB, Canada, (3)Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Saskatoon, SK, Canada, (4)University of Victoria, Victoria, Canada
Assessment of Climate Change Impacts on the Upper Athabasca River Flow: Application of a Snowmelt Runoff Model (491867)
Kyle Siemens, University of Victoria, Victoria, BC, Canada, Yonas B Dibike, Environment Canada, Victoria, BC, Canada and Terry D Prowse, University of Victoria, Department of Geography, Victoria, BC, Canada
Projected end-of-century changes in water available for runoff across mountain basins of western North America (Invited) (492331)
Keith N Musselman, University of Colorado, Boulder, Boulder, CO, United States, Andrew James Newman, NCAR, Boulder, CO, United States and Flavio Lehner, National Center for Atmospheric Research, Boulder, CO, United States
Influence of Hydroclimatic Variability on River Discharge Across a Spectrum of Southcentral Alaskan Watersheds Varying in Glacial Coverage (517361)
Eric S Klein1, Jordan Jenckes1, LeeAnn Munk1, Sydney Souza1, David F Boutt2, Jens Munk3 and Dustin Horton3, (1)University of Alaska Anchorage, Geological Sciences, Anchorage, AK, United States, (2)University of Massachusetts Amherst, Geosciences, Amherst, MA, United States, (3)University of Alaska Anchorage, Electrical Engineering, Anchorage, United States
Impact of climate warming on low flows, snow drought, and streamflow drought (Invited) (539738)
Jennifer R. Dierauer, Simon Fraser University, Earth Sciences, Burnaby, BC, Canada, Diana M Allen, Simon Fraser Univ, Pitt Meadows, BC, Canada and Paul H Whitfield, University of Saskatchewan, Saskatoon, SK, Canada
Hydrogeochemistry variability in fresh water flux to the Gulf of Alaska: Analysis of two contrasting coastal glacial watersheds (546492)
Jordan Jenckes1, Lee Ann Munk1, Eric S Klein1, David F Boutt2, Jens Munk3 and Dustin Horton3, (1)University of Alaska Anchorage, Geological Sciences, Anchorage, AK, United States, (2)University of Massachusetts Amherst, Geosciences, Amherst, MA, United States, (3)University of Alaska Anchorage, Electrical Engineering, Anchorage, United States
Seasonal hydrogeochemical variability of water and solute fluxes to subarctic high-latitude coastal ecosystems across a gradient of ice to rain dominated watersheds (553542)
Lee Ann Munk1, Jordan Jenckes1, Eric S Klein1, David F Boutt2, Jens Munk3, Dustin Horton3, Brenda Konar4, Mark A Johnson4, Steven Baird5 and Kris Holderied6, (1)University of Alaska Anchorage, Geological Sciences, Anchorage, AK, United States, (2)University of Massachusetts Amherst, Geosciences, Amherst, MA, United States, (3)University of Alaska Anchorage, Electrical Engineering, Anchorage, United States, (4)University of Alaska Fairbanks, College of Fisheries and Ocean Sciences, Fairbanks, AK, United States, (5)Alaska Center for Conservation Science, Homer, AK, United States, (6)National Centers of Coastal Ocean Science, National Ocean Service, Kasitsna Bay Laboratory, Homer, AK, United States
Atmospheric Rivers: An overlooked threat to the Australian snowpack in a warming World (563124)
Hamish A McGowan, University of Queensland, St Lucia, Australia, John N Callow, University of Western Australia, Crawley, Australia, Shane Bilish, Snowy Hydro Ltd, Cooma, NSW, Australia, Andrew Schwartz, University of Queensland, St Lucia, QLD, Australia and Alison Theobald, Queensland Government, Department of Environment and Science, Brisbane, Australia
Catch or Release? Sensitivity of Extreme Rain-on-Snow Responses to Snowpack Mass and Energy Balances in California’s Northern Sierra Nevada, USA (567419)
Lisa Jane Katz1, Adrian Adam Harpold2, Michael D Dettinger3, Stephen A. Drake4, Keith Steven Jennings4 and Seshadri Rajagopal5, (1)University of Nevada Reno, Natural Resources and Environmental Science, Reno, CA, United States, (2)University of Nevada Reno, Natural Resources and Environmental Science, Reno, NV, United States, (3)Scripps Institution of Oceanography, Center for Western Weather and Water Extremes, La Jolla, CA, United States, (4)University of Nevada, Reno, Reno, NV, United States, (5)Desert Research Institute, Reno, NV, United States
Toward a process-based understanding of precipitation-phase impacts on streamflow (591980)
Zeeshan Asghar1, Carlos Oroza1, Sally E Thompson2,3, Xue Feng4, Gabrielle F.S. Boisrame5, Ram L Ray6, McKenzie Skiles1 and Roger C Bales7, (1)University of Utah, Salt Lake City, UT, United States, (2)University of California, Berkeley, Department of Civil and Environmental Engineering, Berkeley, CA, United States, (3)University of Western Australia, Department of Civil, Environmental and Mining Engineering, Perth, Australia, (4)University of Minnesota Twin Cities, Civil, Environmental, Geo-Engineering, Minneapolis, MN, United States, (5)California Delta Stewardship Council, Sacramento, DC, United States, (6)Prairie View A & M University, Cooperative Agricultural Research Center, Prairie View, TX, United States, (7)University of California Merced, Merced, CA, United States
Changes in Joint Climate Extremes in the Colorado River Basin (596858)
Carl Talsma, Los Alamos National Laboratory, Computation Earth Science Group, Los Alamos, NM, United States, Katrina Bennett, Los Alamos National Laboratory, Los Alamos, NM, United States and Jorge Rolando Urrego-Blanco, Dalhousie University, Halifax, NS, Canada
