The rapidly changing Arctic climate is impacting the interactions between surface water, supra-permafrost water, snow, vegetation, lakes and streamflow. As recently reported, the Arctic's intensifying hydrologic cycle and warming air temperatures are key drivers of many changes across the Arctic terrestrial environment—from snow cover to lake ice break-up to tundra vegetation productivity. As such, monitoring and modelling Arctic regions remains a challenge due to poor accessibility, limited available observations, and the lack of models that address key cryospheric and hydrological processes in sufficient detail and at the high spatial resolution required.

This session invites studies focused on, but not limited to, integrating observations, remote sensing and numerical modelling with the aim to advance hydrological processes, quantify hydrometeorological extremes, and assess impacts of changing Arctic climate using process-based modelling. Studies that advance process-based understanding across multiple spatial scales and historical to future climates in the Arctic region are encouraged.

1:30 - 1:45: The impact of permafrost and water temperature changes on Canada’s Arctic
Presenter(s): Marie Broesky, Master's Student, University of Manitoba, Tricia Stadnyk, University of Calgary; Masoud Asadzadeh, University of Manitoba;

1:45 - 2:00: Examining variability in snow and lake ice using digital camera imagery in the Canadian High Arctic
Presenter(s): Brianna Lane, Graduate Student, University of Toronto, Dr. Laura Brown, University of Toronto

2:00 - 2:15: Comparison of Observed and Simulated Net Radiation for a Small High Arctic Lake during the ice-free period, August: 2019, 2021 and 2022
Presenter(s): Alexis Robinson, , University of Toronto Mississauga, Laura C Brown, Department of Geography, Geomatics and Environment, University of Toronto Mississauga

2:15 - 2:30: The importance of mosses, lichens, and hummocks on active layer thaw during a dry summer in the Western Canadian Arctic
Presenter(s): Brampton Dakin, MSc. Student, University of Waterloo, David Rudolph, Philip Marsh, Fereidoun Reza Nezhad

2:30 - 2:45: Understanding topographical and hydrological controls on ice-wedge polygonal subsurface regimes
Presenter(s): Branden Walker, Research Associate, Wilfrid Laurier University, Robin Thorne1, Rosy Tutton2, Alex Fogal1, Dilshan Kariyawasam1, Jackson Seto1, Philip Marsh1, 1 Cold Regions Research Centre, Wilfrid Laurier University. Waterloo, ON, 2 Wilfrid Laurier University and Global Water Futures. Yellowknife, NWT

2:45 - 3:00: Modelling recent ice-wedge polygon degradation and increased thermokarst lake drainage in the western Canadian Arctic
Presenter(s): Robin Thorne, , Wilfrid Laurier University, Branden Walker, Cold Regions Research Centre, Wilfrid Laurier University, Waterloo ON, Canada, Rosy Tutton, Wilfrid Laurier University and Global Water Futures, Yellowknife NT, Canada, Alex Fogal, Cold Regions Research Centre, Wilfrid Laurier University, Wa