Publications by Mathias Thierry Pierre Bavay

Influence of sun cups on surface albedo of wet Alpine snowpack

Michael Lehning, Mathias Thierry Pierre Bavay, Francesca Carletti

In high elevation Alpine areas, characterised by high snow accumulation and radiation-driven melt processes, the formation of peculiar ablation features called sun cups can be observed. Sun cups likely influence the energy and mass balance of the wet snowp ...

2024

A comparison of hydrological models with different level of complexity in Alpine regions in the context of climate change

Michael Lehning, Alice Marie Burri, Mathias Thierry Pierre Bavay, Adrien Michel, Francesca Carletti

This study compares the ability of two degree-day models (Poli-Hydro and a degree-day implementation of Alpine3D) and one full energy-balance melt model (Alpine3D) to predict the discharge on two partly glacierized Alpine catchments of different size and i ...

Copernicus Gesellschaft MBH2021

Simulation of snow management in Alpine ski resorts using three different snow models

Michael Lehning, Mathias Thierry Pierre Bavay

Snow management, i. e., snowmaking and grooming, is an integral part of modern ski resort management. While the current snow cover distribution on the slopes is often well known thanks to the usage of advanced monitoring techniques, information about its f ...

ELSEVIER2020

Hydrological response of two high altitude Swiss catchments to energy balance and temperature index melt schemes

Michael Lehning, Alice Marie Burri, Francesco Comola, Abdul Shakoor, Mathias Thierry Pierre Bavay

2018

Distributed snow and rock temperature modelling in steep rock walls using Alpine3D

Michael Lehning, Nander Wever, Mathias Thierry Pierre Bavay

In this study we modelled the influence of the spatially and temporally heterogeneous snow cover on the surface energy balance and thus on rock temperatures in two rugged, steep rock walls on the Gemsstock ridge in the central Swiss Alps. The heterogeneous ...

Copernicus GmbH2017

Simulating the influence of snow surface processes on soil moisture dynamics and streamflow generation in an alpine catchment

Michael Lehning, Nander Wever, Francesco Comola, Mathias Thierry Pierre Bavay

The assessment of flood risks in alpine, snow-covered catchments requires an understanding of the linkage between the snow cover, soil and discharge in the stream network. Here, we apply the comprehensive, distributed model Alpine3D to investigate the role ...

Copernicus GmbH2017

How much can we save? Impact of different emission scenarios on future snow cover in the Alps

Michael Lehning, Sebastian Schlögl, Mathias Thierry Pierre Bavay

This study focuses on an assessment of the future snow depth for two larger Alpine catchments. Automatic weather station data from two diverse regions in the Swiss Alps have been used as input for the Alpine3D surface process model to compute the snow cove ...

Copernicus GmbH2017

Scaling Precipitation Input to Spatially Distributed Hydrological Models by Measured Snow Distribution

Michael Lehning, Nander Wever, Mathias Thierry Pierre Bavay

Accurate knowledge on snow distribution in alpine terrain is crucial for various applications such as flood risk assessment, avalanche warning or managing water supply and hydro-power. To simulate the seasonal snow cover development in alpine terrain, the ...

Frontiers Media Sa2016

StreamFlow 1.0: an extension to the spatially distributed snow model Alpine3D for hydrological modelling and deterministic stream temperature prediction

Tristan Jonas Brauchli, Michael Lehning, Wolf Hendrik Huwald, Aurélien Gallice, Francesco Comola, Mathias Thierry Pierre Bavay

Climate change is expected to strongly impact the hydrological and thermal regimes of Alpine rivers within the coming decades. In this context, the development of hydrological models accounting for the specific dynamics of Alpine catchments appears as one ...

Copernicus Gesellschaft Mbh2016

Sensitivity of Alpine3D modeled snow cover to modifications in DEM resolution, station coverage and meteorological input quantities

Michael Lehning, Sebastian Schlögl, Mathias Thierry Pierre Bavay

This study presents a comprehensive sensitivity and uncertainty assessment of important input parameters on the Alpine3D modeled snow water equivalent (SWE) for two different alpine catchments. Horizontal resolution of the DEM grid, station coverage and se ...

Elsevier2016

Carbon storage versus albedo change: radiative forcing of forest expansion in temperate mountainous regions of Switzerland

Michael Lehning, Marc Schneebeli Zeugin, Mathias Thierry Pierre Bavay

In this study, we assess the climate mitigation potential from afforestation in a mountainous snow-rich region (Switzerland) with strongly varying environmental conditions. Using radiative forcing calculations, we quantify both the carbon sequestration pot ...

European Geosciences Union2015

Scale-dependent effects of solar radiation patterns on the snow-dominated hydrologic response

Bettina Schaefli, Michael Lehning, Andrea Rinaldo, Francesco Comola, Gianluca Botter, Pierfrancesco Da Ronco, Mathias Thierry Pierre Bavay

Solar radiation is a dominant driver of snowmelt dynamics and streamflow generation in alpine catchments. A better understanding of how solar radiation patterns affect the hydrologic response is needed to assess when calibrated temperature-index models are ...

American Geophysical Union2015

Response of snow cover and runoff to climate change in high Alpine catchments of Eastern Switzerland

Michael Lehning, Thomas Grünewald, Mathias Thierry Pierre Bavay

A model study on the impact of climate change on snow cover and runoff has been conducted for the Swiss Canton of Graubünden. The model Alpine3D has been forced with the data from 35 Automatic Weather Stations in order to investigate snow and runoff dynami ...

2013

A comparison between two statistical and a physically-based model in snow water equivalent mapping

Michael Lehning, Tobias Jonas, Mathias Thierry Pierre Bavay

Snow water equivalent (SWE) estimates at the end of the winter season have been compared for the 2002–2006 period in a 200 km2 mountainous area in Switzerland, using three different models. The first model, ALPINE3D, is a physically based process-oriented ...

Elsevier2013

Micrometeorological processes driving snow ablation in an Alpine catchment

Michael Lehning, Thomas Grünewald, Mathias Thierry Pierre Bavay

Mountain snow covers typically become patchy over the course of a melting season. The snow pattern during melt is mainly governed by the end of winter snow depth distribution and the local energy balance. The objective of this study is to investigate micro ...

2011

Automated Model-driven Simulation and Visualization of Field Sensor Data

Karl Aberer, Sofiane Sarni, Marc Parlange, Michael Lehning, Silvia Simoni, Mathias Thierry Pierre Bavay

In the EU project Hydrosys (http://www.hydrosysonline.eu), we have defined and implemented a data processing pipeline that makes simulation process completely automated, fast and transparent to the scientist. Furthermore, our automated simulation tool is f ...

2011

Environmental Monitoring 2.0

Karl Aberer, Guillermo Barrenetxea Kobas, Marc Parlange, Ali Salehi, Sebastian Michel, Mathias Thierry Pierre Bavay

A sensor network data gathering and visualization infrastructure is demonstrated, comprising of Global Sensor Networks (GSN) middleware and Microsoft SensorMap. Users are invited to actively participate in the process of monitoring real-world deployments a ...

ICDE2009