Name
Comparing spatial distributions of snow water storage across recently burned and unburned tundra landscapes
Date & Time
Tuesday, May 28, 2024, 11:45 AM - 12:00 PM
Branden Walker
Description

Tundra landscapes are characterized by heterogenous snow cover resulting from blowing snow transportation and deposition. This blowing snow results in both substantial snow low due to sublimation and snow capture by shrub patches and topographic gradients resulting in large drift formations. These drift areas contain a proportionally large amount of snow water storage relative to the surrounding open tundra and have important hydrological impacts. In the tundra-taiga transition zone between Inuvik, NWT and the Trail Valley Creek Research Watershed (TVC), a fire (EV014-23) burned approximately 356 km2 of tundra during the summer of 2023. This fire burned much of the tundra shrub vegetation that typically captures blowing snow. In this study we will investigate snow cover conditions within the burn site and compare these with similar observations at the nearby TVC. These paired observations will allow an improved understanding of the impacts of tundra fires on snow accumulation and ablation. In September 2023, drone mapping captured the extent and severity of the burn across the study area only weeks after the initial burn. In April 2024, at the end of a record high snowfall year, snow properties were documented using a combination of in-situ observations, drone and satellite, remote sensing techniques. Snow pits allowed us to identify the entrapment of wind-blown soot, which would effectively reduce the snowpack albedo during the May snowmelt. To further understand the impacts of tundra fires on snow conditions, a high-resolution physically based hydrological model will be applied across the same study domain.

Location Name
Conference Room - 2224
Full Address
Carleton University - Richcraft Hall
1125 Colonel By Dr
Ottawa ON K1S 5B6
Canada
Session Type
Breakout Session