Simulations and in-situ measurements of ice evolution in Lake Orajärvi (October 2019- June 2020)

This dataset contains simulations of ice evolution and energy balance components in Lake Orajärvi (67.35°N, 26.84°E) located in the Finnish Arctic and the associated model forcing data. Simulations were conducted using two thermodynamic ice models: the Canadian Lake Ice Model (CLIMo) and the High-Resolution Snow and Ice Model (HIGHTSI). In-situ measurements of wind speeds, air temperatures, relative humidity, cloudiness, and precipitation intensity measured ~10 km away from Lake Orajärvi at the Finnish Arctic Space Centre in Sodankylä were used to force the models. Model simulations were run assuming 100%, 50% and 0% of measured precipitation values to investigate the effect of snowfall on ice evolution. In-situ measurements of snow and ice evolution on Lake Orajärvi were obtained using a Snow and Ice Mass Balance Apparatus (SIMBA). Simulated and SIMBA-measured surface temperatures are provided. Data is presented in tabulated form and is the research output from a model intercomparison study conducted in Lake Orajärvi.