A5060985888- Cryospheric studies and observations
- Winter Sports Injuries and Performance
- Geology and Paleoclimatology Research
- Landslides and related hazards
- Polar Research and Ecology
- Climate Change Policy and Economics
- Environmental Impact and Sustainability
- Social Acceptance of Renewable Energy
- Geophysics and Gravity Measurements
- Arctic and Antarctic ice dynamics
- Atomic and Subatomic Physics Research
- Geophysics and Sensor Technology
- Smart Materials for Construction
- Geomagnetism and Paleomagnetism Studies
- Climate change and permafrost
- Computational Physics and Python Applications
- Climate Change and Geoengineering
- COVID-19 diagnosis using AI
- Climate Change, Adaptation, Migration
- Ecosystem dynamics and resilience
- Advanced Data Processing Techniques
- Air Quality Monitoring and Forecasting
- Paleontology and Stratigraphy of Fossils
- Climate variability and models
- Geological and Geophysical Studies
Potsdam Institute for Climate Impact Research
2019-2024
University of Potsdam
2019-2024
Leibniz Association
2020-2024
Abstract. The sea level contribution of the Antarctic ice sheet constitutes a large uncertainty in future projections. Here we apply linear response theory approach to 16 state-of-the-art models estimate from basal shelf melting within 21st century. purpose this computation is Antarctica's global rise that arises oceanic forcing and associated melting. Ice considered be major if not largest perturbation sheet's flow into ocean. However, by computing only melting, our study neglecting number...
Abstract. Observations of ocean-driven grounding-line retreat in the Amundsen Sea Embayment Antarctica raise question an imminent collapse West Antarctic Ice Sheet. Here we analyse committed evolution grounding lines under present-day climate. To this aim, first calibrate a sub-shelf melt parameterization, which is derived from ocean box model, with observed and modelled sensitivities to temperature changes, making it suitable for simulations future sea level projections. Using new...
Abstract. Theoretical and numerical work has shown that under certain circumstances grounding lines of marine-type ice sheets can enter phases irreversible advance retreat driven by the marine sheet instability (MISI). Instances such have been found in several simulations Antarctic Ice Sheet. However, it not assessed whether are already undergoing MISI their current position. Here, we conduct a systematic stability analysis using three state-of-the-art models: Úa, Elmer/Ice, Parallel Sheet...
Abstract The Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6) is the primary effort of (Coupled Project–Phase 6) focusing on ice sheets, designed to provide an ensemble process‐based projections ice‐sheet contribution sea‐level rise over twenty‐first century. However, behavior Antarctic beyond 2100 remains largely unknown: several instability mechanisms can develop longer time scales, potentially destabilizing large parts Antarctica. Projections evolution until 2300 are presented...
Abstract. Observations of ocean-driven grounding line retreat in the Amundsen Sea Embayment Antarctica give rise to question a collapse West Antarctic Ice Sheet. Here we analyse committed evolution lines under present-day climate conditions locate underlying steady states that they are attracted and understand reversibility large-scale changes. To this aim, first calibrate sub-shelf melt module PICO with observed modelled sensitivities ocean temperature Using new calibration, run an ensemble...
Abstract Temperature targets of the Paris Agreement limit global net cumulative emissions to very tight carbon budgets. The possibility overshoot budget and offset near-term excess by net-negative is considered economically attractive as it eases mitigation pressure. While potential side effects removal deployment are discussed extensively, additional climate risks impacts damages have attracted less attention. We link six models for an integrative analysis climatic, environmental...
Abstract. Theoretical and numerical work has firmly established that grounding lines of marine-type ice sheets can enter phases irreversible advance retreat driven by the marine sheet instability (MISI). Instances such have been found in several simulations past future evolution Antarctic Ice Sheet. However, hitherto stability regime Sheet their current position not assessed. Here we conduct a systematic analysis all to determine if they are currently undergoing through MISI. To do this,...
Abstract. It is virtually certain that Antarctica's contribution to sea-level rise will increase with future warming, although competing mass balance processes hamper accurate quantification of the exact magnitudes. Today, ocean-induced melting underneath floating ice shelves dominates losses, but at surface gain importance as global warming continues. Meltwater has crucial implications for sheet's stability, it increases risk hydrofracturing and ice-shelf collapse could cause enhanced...
Abstract. It is virtually certain that Antarctica's contribution to sea-level rise will increase with future warming, although competing mass balance processes hamper accurate quantification of the exact magnitudes. Today, ocean-induced melting underneath floating ice shelves dominates losses, but at surface gain importance as global warming continues. Meltwater has crucial implications for sheet's stability, it increases risk hydrofracturing and ice-shelf collapse could cause enhanced...
Abstract. The sea level contribution of the Antarctic ice sheet constitutes a large uncertainty in future projections. Here we apply linear response theory approach to 16 state-of-the-art models estimate from basal shelf melting within 21st century. purpose this computation is that arises external forcing warming may exert onto sheet. While considered be major if not largest perturbation sheet's flow into ocean, neglecting number processes such as surface mass balance related contributions...
Temperature targets of the Paris Agreement limit global net cumulative emissions to very tight carbon budgets. The possibility overshoot budget and offset near-term excess by net-negative is considered economically attractive as it eases mitigation pressure. While potential side effects removal deployment are discussed extensively, additional climate risks impacts damages have attracted less attention. We link six models for an integrative analysis climatic, environmental socio-economic...
Over geological time scales, the combination of solid-Earth deformation and climate-dependent surface processes have resulted in a distinct hypsometry (distribution area with elevation), highest concentration focused near present-day sea surface. However, this distinctive signature Earth’s does not constitute single well-defined maximum at (0 m). also shows prominent ~5 m above Here we explore nature 5-m examine how it evolved over last glacial cycle may evolve moving towards...
Abstract Ice loss from Antarctica's vast freshwater reservoir could threaten coastal communities and the global economy if ice volume decreases by even just a few percent [1]. Key processes controlling fine balance between gain remain poorly constrained, so that contribution to future sea-level changes ranks as most uncertain of all potential contributors [2]. Meanwhile, observed in mass are limited ~40 years [3,4] difficult put into context for an sheet with response time scales reaching...
The Antarctic Ice Sheet is currently losing mass through ocean induced melting at the underside of its large ice shelves. In future, shelf cavities could switch from a ‘’cold” to “warm” state, following distinct increase in temperatures e.g. by redirection coastal currents allowing warm circumpolar waters access grounding lines. With ice-sheet model PISM, we delineate potential thresholds, which experience ocean-induced non-linear loss. To...
Observations of ocean-driven grounding line retreat in the Amundsen Sea Embayment Antarctica raise question an imminent collapse West Antarctic Ice Sheet. Here we analyse committed evolution lines under present-day climate. To this aim, run ensemble historical simulations with a state-of-the-art ice sheet model to create instances possible configurations. Then, extend investigate their constant climate forcing and bathymetry. We test for reversibility movement at different stages when where...