Florent Domine. (2017). Can We Monitor Snow Properties on Sea Ice to Investigate Its Role in Tropospheric Ozone Depletion? (Vol. 122).
Abstract: In the lower troposphere over the Arctic Ocean, ozone is often destroyed in spring by chemical chain reactions involving the reactive bromine species Br and BrO. The role of surface snow in generating reactive bromine has been suspected, but many details of the processes not understood. Using unique data such as BrO concentrations from instruments on buoys, Burd et al. (2017, https://doi.org/10.1002/2017JD026906) observed that the snowmelt onset date often coincides with the end of the reactive bromine season. They proposed that the decrease in snow-specific surface area and/or the occurrence of liquid water in snow induced by melting dramatically slows the rate of surface reactions generating bromine, indicating that the physical state of the snow is critical for bromine generation. Their suggestion is discussed, and a method to test it using novel instrumentation recently available is proposed.
Keywords: Arctic bromine ozone snow troposphere
Programme: 1042
|
. (2019). Major Issues in Simulating Some Arctic Snowpack Properties Using Current Detailed Snow Physics Models: Consequences for the Thermal Regime and Water Budget of Permafrost (Vol. 11).
Keywords: Arctic model permafrost snow temperature water vapor
Programme: 1042
|
Florent Domine, Gilles Gauthier, Vincent Vionnet, Dominique Fauteux, Marie Dumont, and Mathieu Barrere. (2018). Snow physical properties may be a significant determinant of lemming population dynamics in the high Arctic – Arctic Science (Vol. 4). Bachelor's thesis, , .
|
Mathieu Barrere, Florent Domine, Maria Belke-Brea, Denis Sarrazin. (2018). (Vol. 31).
|
Florent Domine, Maria Belke-Brea, Denis Sarrazin, Laurent Arnaud, Mathieu Barrere, Mathilde Poirier. (2018). Soil moisture, wind speed and depth hoar formation in the Arctic snowpack (Vol. 64).
Keywords: arctic snowpack convection permafrost thermal conductivity water vapor flux
Programme: 1042
|
Alain Royer, Florent Domine, Alexandre Roy, Alexandre Langlois, Nicolas Marchand, Gautier Davesne. (2021). New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada.
|
M. Belke-Brea, F. Domine, S. Boudreau, G. Picard, M. Barrere, L. Arnaud, M. Paradis. (2020). New Allometric Equations for Arctic Shrubs and Their Application for Calculating the Albedo of Surfaces with Snow and Protruding Branches (Vol. 21).
|
M. Belke-Brea, F. Domine, M. Barrere, G. Picard, L. Arnaud. (2020). Impact of Shrubs on Winter Surface Albedo and Snow Specific Surface Area at a Low Arctic Site: In Situ Measurements and Simulations (Vol. 33).
|
. (2021). Snow hardness impacts intranivean locomotion of arctic small mammals (Vol. 12).
Abstract: Fossorial locomotion is often considered as the most energetically costly of all terrestrial locomotion. Small arctic rodents, such as lemmings, dig tunnels not only in the soil but also through the snowpack, which is present for over 8 months of the year. Lemmings typically dig in the softest snow layer called the depth hoar but with climate change, melt-freeze and rain-on-snow (ROS) events are expected to increase in the Arctic, leading to a higher frequency of hardened snowpacks. We assessed the impacts of snow hardness on the locomotion of two lemming species showing different morphological adaptations for digging. We hypothesized that an increase in snow hardness would (1) decrease lemming performance and (2) increase their effort while digging, but those responses would differ between lemming species. We exposed four brown lemmings (Lemmus trimucronatus) and three collared lemmings (Dicrostonyx groenlandicus) to snow of different hardness (soft, hard, and ROS) during 30-min trials (n = 63 trials) in a cold room and filmed their behavior. We found that the digging speed and tunnel length of both species decreased with snow hardness and density, underlining the critical role of snow properties in affecting lemming digging performance. During the ROS trials, time spent digging by lemmings increased considerably and they also started using their incisors to help break the hard snow, validating our second hypothesis. Overall, digging performance was higher in collared lemmings, the species showing more morphological adaptations to digging, than in brown lemmings. We conclude that the digging performance of lemming is highly dependent on snowpack hardness and that the anticipated increase in ROS events may pose a critical energetic challenge for arctic rodent populations.
Keywords: Arctic burrowing behavior digging fossorial hardness lemming locomotion rain-on-snow rodent snow subnivean tunnel
Programme: 1042
|
. (2022). Permafrost cooled in winter by thermal bridging through snow-covered shrub branches (Vol. 15).
Keywords: Climate change Climate sciences Climate-change impacts Cryospheric science
Programme: 1042
|