Subarctic catchment water storage and carbon cycling – Leading the way for future studies using integrated datasets at Pallas, Finland

Subarctic ecohydrological processes are changing rapidly, but detailed and integrated investigations not as widespread necessary. We introduce an research catchment site (Pallas) for atmosphere, ecosystems, ecohydrology studies in subarctic conditions Finland that can be used a new set of comparative investigations. The Pallas provides unique observational data high-intensity field measurement datasets over long periods. infrastructure atmosphere- to landscape-scale ecosystem landscape has recently been complemented with measurements. identify three dominant ecohydrology: (a) strong seasonality drives regimes, (b) limited dynamic storage causes rapid stream response water inputs (snowmelt intensive storms), (c) hydrological state the system regulates catchment-scale dissolved carbon dynamics greenhouse (GHG) fluxes. Surface groundwater interactions play important role regulating balances respiration within peatlands, particularly their spatial variability landscape. Based on our observations from Pallas, we highlight key gaps propose several ways forward. also demonstrate meets need sustaining pushing boundaries critical long-term high-latitude environments.