Climate change impacts the terrestrial carbon, water, and energy cycle with important feedback effects on the global climate system. In order to adapt to future climate change, we must understand the response of terrestrial carbon, water, and energy cycles to a warming climate, increased atmospheric CO2 concentrations, land-use and land cover change, disturbances, vegetation shifts, and accelerated nutrient cycling. It’s also important that we quantify the impact of these processes in critical ecosystems including boreal forests, peatlands, and Arctic ecosystems. Process-based models, inventory-based estimates, atmospheric inversions, remote sensing observations, and data-driven approaches are powerful tools for approaching these problems. This session will showcase research focused on improving our understanding of the Canadian and global terrestrial carbon, water, and energy cycles by providing insights into how best to represent these complex systems and reduce uncertainties. We especially encourage submissions that can inform the development of process-based models, in particular studies that utilize the Canadian Land Surface Scheme including Biogeochemical Cycles (CLASSIC), which is the community open-source successor to the coupled Canadian Land Surface Scheme (CLASS) and Canadian Terrestrial Ecosystem Model (CTEM) framework and the land surface component of CanESM.

Conveners: Salvatore R. Curasi, Climate Research Division, Environment, and Climate Change Canada, Department of Geography & Environmental Studies, Carleton University; Joe R. Melton, Climate Research Division, Environment, and Climate Change Canada; Elyn R. Humphreys, Department of Geography & Environmental Studies, Carleton University; Oluwabamise Afolabi, Department of Geography and Environmental Management, Faculty of Environment, University of Waterloo

10:30am - 10:45am N deposition does not significantly enhance CO2 fertilisation over land in ESMs
Presenter(s): Sian Kou-Giesbrecht

10:45am - 11:00am Mean annual Canadian burned area is projected to be on par with the 2023 extreme fire season at the end of the century
Presenter(s): Salvatore Curasi

11:00am - 11:15am Performance of the Canadian Land Surface Scheme Including Biogeochemical Cycles (CLASSIC) over eight years of TRENDY simulations with regards to carbon, water and energy fluxes
Presenter(s): Gesa Meyer

11:15am - 11:30am Modelling the long-term C flux of temperate swamp under a changing climate
Presenter(s): Oluwabamise Afolabi

11:30am - 11:45am Investigating Vegetation Effects on Soil Organic Matter Decomposability in High Arctic Ecosystems
Presenter(s): Julianah Adediji

11:45am - 12:00pm Radiocarbon as a useful constraint on soil carbon modeling in CLASSIC
Presenter(s): Joe Melton