Dataset from "Impact of intercepted and sub-canopy snow microstructure on snowpack response to rain-on-snow events under a boreal canopy"

<p>The dataset presented below is described in the paper "Impact of rain-on-snow events on snowpack structure and runoff under a boreal canopy" by Bouchard et al. (submitted in December 2023) in the journal The Cryosphere.</p><p>The original dataset includes <strong>sub-canopy snow monitoring data</strong> collected at the Montmorency Forest site (MF; 47.29°N, 71.17°W, elev. » 850&nbsp;m above mean sea level (AMSL)) from 2018 to 2023 and at the Bernard River Valley site (BRV; 50.91°N; 63.37°W, elev. »&nbsp;250 m. AMSL) from 2019 to 2023. MF is a balsam fir-white birch stand on a 12° northeast-facing slope. BRV is a valley surrounded by plateaus 200 m higher. The dataset covers the period from October 15 to June 15 of each year. In the monitoring dataset you can find the hourly time step:</p><ul><li>Snow height (cm) <i>– all years at both sites</i></li><li>Soil-snow interface temperature (°C) <i>– 2020 to 2023 at both sites</i></li><li>Snow temperature every 15 cm from the ground surface (°C)<i> – 2020 to 2023 at both sites</i></li><li>Snow surface temperature (°C) –<i> 2018-19 and from 2020 to 2023 at MF site</i></li><li>Air temperature (°C)<i> – 2020 to 2023 at both sites</i></li></ul><p>The dataset also includes a total of <strong>48 sub-canopy snow pit observations</strong> taken at the MF (42 snow pits) and BRV (6 snow pits) sites during the study period. Each snow pit contains the vertical profile of snow stratigraphy (grain type) and snow density. The snow pit height corresponds to the upper limit of the top snow layer in the stratigraphic profile. For density measurements, the height value corresponds to the center of the 3 cm thick box cutter. Grain type codes for the snowpack stratigraphy correspond to the International Classification for Seasonal Snow (Fierz et al., 2009):</p><ul><li>PP: precipitation particles</li><li>DF: decomposed and fragmented precipitation particles</li><li>RG: rounded grains</li><li>FC: faceted crystals</li><li>FCxr: rounding faceted particles</li><li>DH: depth hoar</li><li>MFpc: melt forms – rounded polycrystals</li><li>MF: melt forms – clustered rounded grains</li><li>MFcr: melt forms – melt-freeze crusts</li><li>IF: ice formations</li></ul><p>Finally, the dataset includes <strong>all observed rain-on-snow (ROS) events</strong> at both sites from November to March, covering the period 2018-2023 at the MF site and the period 2019-2023 at the BRV site. In the ROS dataset, we present the start and end dates, as well as the duration, rainfall amount, and mean air temperature of each event.</p>