Concept
Relief (géomorphologie)
Publications associées (131)
Snowfall deposition in mountainous terrain: a statistical downscaling scheme from high-resolution model data on simulated topographies
One of the primary causes of non-uniform snowfall deposition on the ground in mountainous regions is the preferential deposition of snow, which results from the interaction of near-surface winds with topography and snow particles. However, producing high-r ...
Lausanne2024Intermediate complexity atmospheric modeling in complex terrain: is it right?
Michael Lehning, Dylan Stewart Reynolds, Michael Haugeneder
Dynamic downscaling of atmospheric forcing data to the hectometer resolution has shown increases in accuracy for landsurface models, but at great computational cost. Here we present a validation of a novel intermediate complexity atmospheric model, HICAR, ...
Frontiers Media Sa2024Turbulence in the Strongly Heterogeneous Near-Surface Boundary Layer over Patchy Snow
Michael Lehning, Dylan Stewart Reynolds, Michael Haugeneder
The near-surface boundary layer above patchy snow cover in mountainous terrain is characterized by a highly complex interplay of various flows on multiple scales. In this study, we present data from a comprehensive field campaign that cover a period of 21 ...
2024Automation in steep terrain agriculture: an optimal controller to prevent tipping and slipping of tethered robots on slopes
Josephine Anna Eleanor Hughes, Max Mirko Polzin
Autonomous robots have the potential to fundamentally transform conventional farming methods, e.g. by enabling economically viable farming of sloped arable land. However, navigation on slopes in harsh conditions is challenging for robots as they must be pr ...
TAYLOR & FRANCIS LTD2023Combining Weather Station Data and Short-Term LiDAR Deployment to Estimate Wind Energy Potential with Machine Learning: A Case Study from the Swiss Alps
Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Franziska Gerber, Fanny Kristianti
Wind energy potential in complex terrain is still poorly understood and difficult to quantify. With Switzerland’s current efforts to shift to renewable energy resources, it is now becoming even more crucial to investigate the hidden potential of wind energ ...
2023A Depth-Averaged Material Point Method for Shallow Landslides: Applications to Snow Slab Avalanche Release
Johan Alexandre Philippe Gaume, Lars Kristoffer Uhlen Blatny, Bertil Trottet, Denis Aloyse Joseph Steffen, Louis Marie Cédric Guillet
Shallow landslides pose a significant threat to people and infrastructure. Despite significant progress in the understanding of such phenomena, the evaluation of the size of the landslide release zone, a crucial input for risk assessment, still remains a c ...
AMER GEOPHYSICAL UNION2023Maximum Wind Energy Production (MaxWEP): Maximizing Winter Production of Energy by Exploiting Terrain Potential
Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Franziska Gerber, Fanny Kristianti, Sebastian Wilhelm Hoch
The objective of this project has been to explore the potential of the wind over complex terrain, as an energy source during wintertime in Switzerland. A wind assessment method is developed based on short-term wind profile measurements with a wind lidar, l ...
Swiss Federal Office of Energy SFOE2023Supercell Thunderstorms in the Alpine Region - From Weather Radar Observations to Idealized Modeling
The high-impact nature and increasing occurrence of severe weather phenomena pushes forward research on their occurrence and improving our understanding thereof. Supercell thunderstorms are the focus of much severe convective research, as they represent on ...
EPFL2023TopoCLIM: rapid topography-based downscaling of regional climate model output in complex terrain v1.1
This study describes and evaluates a new downscaling scheme that specifically addresses the need for hillslope-scale atmospheric-forcing time series for modelling the local impact of regional climate change projections on the land surface in complex terrai ...
2022A Downscaling Intercomparison Study: The Representation of Slope- and Ridge-Scale Processes in Models of Different Complexity
Varun Sharma, Franziska Gerber, Dylan Stewart Reynolds
Spatially distributed meteorological information at the slope scale is relevant for many processes in complex terrain, yet information at this sub-km spatial resolution is difficult to obtain. While downscaling to kilometer resolutions is well described in ...
FRONTIERS MEDIA SA2022