Drone-based assessment of albedo variations in crevassed zones of southern Spitsbergen glaciers.

This project addresses a critical knowledge gap in glacier energy balance studies by investigating albedo variations in crevassed zones of southern Spitsbergen glaciers. While satellite observations and climate models operate at scales of 100 meters to kilometers, significant albedo variations occur at meter scales in crevassed areas. Understanding these fine-scale variations is crucial for improving our understanding of glacier melt processes and enhancing climate model accuracy. Using innovative drone-mounted pyrometer technology, we will conduct systematic measurements over the crevassed zones of Hansbreen glacier. The research combines aerial measurements with ground-based validation stations. This approach overcomes traditional safety and accessibility challenges associated with studying crevassed areas while providing good spatial resolution data. The three-week field campaign in August-September 2025 will utilize a DJI Matrice drone equipped with pyrometers and camera, allowing for simultaneous radiation measurements and surface imaging. Ground validation stations will provide continuous reference data. The timing coincides with peak ablation season, offering optimal conditions for observing albedo variations. The project builds upon existing glacier research in Svalbard while introducing novel methodology for studying previously undersampled terrain features. All data will be made freely available through established repositories following FAIR principles, contributing to the broader scientific community. The research results will help improve the parameterization of glacier surface properties in models. Beyond its scientific objectives, the project emphasizes environmental stewardship through careful planning and minimal impact methodology. The research will be documented for scientific outreach, contributing to public understanding of glacier dynamics and climate change impacts in the Arctic.