Abstract Project: AWIPEV_1126

Hans-Werner Jacobi (CNRS/ Univ. Grenoble Alpes)

The Arctic and subarctic regions are undergoing significant changes due to global warming and Arctic amplification. The ARCSNOW-3 project aims to address knowledge gaps by conducting comprehensive in-situ observations of the Arctic snowpack and related processes. The project focuses on long-term observations of snow properties, deposition of impurities, calibration/validation activities for remote sensing data and snow models, and fostering collaborations with other research groups. The aim of the
projects is to continue year-round snow and precipitation observations at Ny-Alesund initiated in the previous ARCSNOW projects and partly supported by an international cooperation involving as scientific partners the Norwegian Polar Institute and the Ecole Centrale Lyon and executed by the personnel from the Sverdrup and AWIPEV stations. It focuses on addressing scientific questions related to changes in precipitation at Ny-Alesund and their impact on the snowpack, wet deposition, and chemical processes in snow. The study utilizes long-term observations from previous projects and aims to reduce uncertainties in precipitation corrections, examine the evolution of wet deposition, and quantify the impact of chemical processes in the snowpack. The methodology involves weekly snowpack observations, year-round precipitation sampling and chemical analysis, event-based snow sampling, and additional snow pit observations at different locations to gather comprehensive data for analysis and validation purposes.