Snow cover impacts on hydrologic and biogeochemical cycling in alpine, sub-arctic environments ...

• Main Authors: Popp, Andrea, Valiente, Nicolas, Aalstad, Kristoffer, Trier Kjær, Sigrid, Yilmaz, Yeliz A., Pirk, Norbert, Eiler, Alexander, Dörsch, Peter, Hessen, Dag O., Tallaksen, Lena M., Larsen, Laurel
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Arctic; Norway
• Online Access: https://dx.doi.org/10.57757/iugg23-3837; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020708

Headwater catchments release substantial amounts of greenhouse gases (GHGs) into the atmosphere. Despite extensive research on this topic, drivers of GHGs remain elusive, particularly in cold regions. Cryospheric changes, such as alterations in the snowpack, are strongly coupled with the hydrological cycle. However, we have limited insight into the nexus between snow cover changes, source water contributions (e.g., groundwater and glacial meltwater) to surface waters, and associated biogeochemical cycling. To better understand the drivers of hydrological and biogeochemical changes in cold regions, we obtained field- and satellite-derived data from two sub-arctic alpine catchments (one glaciated, one non-glaciated) in the north-western part of the Hardangervidda mountain plateau (South Central Norway) in 2020 and 2021. Fractional snow cover durations show that 2020 was exceptionally snow-rich, while 2021 was an average snow year. Our results indicate that gas saturations distinctively differ between snow-rich ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...