4.8 Glaciology @ NM – Quasi-Long-Term Observatory

This project provides long-term time series of glaciological observables at Neumayer Station III and its hinterland. In consists of three sub-projects, which will be described in the following order in chapters Objectives and Fieldwork: The sub-project “MIMO-EIS (Monitoring melt where Ice Meets Ocean – Continuous observation of ice-shelf basal melt on Ekström Ice Shelf, Antarctica)” monitors the temporal variation of the basal melt in the centre of the Ekströmisen on sub-daily times scales. In addition, it investigates spatial variations of annually averaged basal melt rates. In the sub-project “NM surface mass balance”, surface accumulation and surface layer density were regularly observed at the two stake farms Pegelfeld Süd and Pegelfeld Spuso as part of the airchemistry observatory or the Neumayer Station III. Results are described in Chapter 4.2 Part II of this volume. As part of the conventional density observations, the sub-project “GNSS–RR (Global Navigation Satellite System – Reflecto/Refractometry)” aims at developing a methodology deriving automated and continuous specific surface mass balance time series for fast moving parts of ice sheets and shelves (>10m/a). The sub-project “Kottaspegel” investigates the spatio-temporal variation of the snow accumulation along the traverse route between Neumayer Station III and Kottas camp, if possible, also to Kohnen Station, as done in 2023/24. Snow accumulation is determined from reading of snow height at bamboo stakes in annual to bi-annual intervals, which is relevant to provide ground-truth measurement for satellite and regional climate modelling approaches.

Antartic Land Expeditions > ANT-Land_2024