Center for Northern Studies

A standardized permafrost ground temperature collection for Canada 2025

Abstract. Ground temperature is an essential variable for monitoring the thermal state of permafrost, developing models, and conducting fundamental research. However, the usability of GT data in Canada is often hampered by inconsistent file formats, a lack of metadata standardiza...

Improving the CLASSIC (v1.8) snow model to better simulate Arctic snowpacks

Abstract. This study enhances the snow model of the Canadian Land Surface Scheme including Biogeochemical Cycles (CLASSIC), with a particular focus on Arctic environments. Key snow model physics improvements include adjustments to the thermal conductivity at the top of the first...

Evolutions of Non‐oxygenated Compounds in Sunlit Subarctic Thermokarst Pond Surface Waters

Abstract With global climate change, ground subsidence caused by permafrost thawing leads to the formation of thermokarst ponds, where organics from eroding permafrost accumulate in part as dissolved organic matter (DOM). Surface waters were collected from two subarctic thermokar...

Microbial communities and ecological functions shift with glacier retreat in the Canadian High Arctic

Abstract Glaciers are rapidly retreating under climate warming, raising concerns about the loss of unique microbial ecosystems in both glacier ice and forelands. However, the changes in microbial diversity, community structure, and functional traits across the glacier ice-forelan...

Modelling mineral dust emissions from proglacial valleys of the St. Elias Mountains, Canada

Abstract. Proglacial valleys of western Canada and Alaska demonstrate extensive historical and contemporary records of mineral dust emissions. These contributions remain unresolved by current dust emission modelling and unaccounted for in global emission estimates. We developed a...