Publication
Statistical modelling of the snow depth distribution in open alpine terrain
Publications associées (40)
Theoretical analysis of errors when estimating snow distribution through point measurements
Michael Lehning, Ernesto Trujillo Gomez
In recent years, marked improvements in our knowledge of the statistical properties of the spatial distribution of snow properties have been achieved thanks to improvements in measuring technologies (e.g., LIDAR, terrestrial laser scanning (TLS), and groun ...
Copernicus Gesellschaft Mbh2015Very high resolution digital elevation models: are multi-scale derived variables ecologically relevant?
Stéphane Joost, Kevin Leempoel, Pascal Vittoz
Digital Elevation Models (DEMs) are often used in landscape ecology to retrieve elevation or first derivative terrain attributes such as slope or aspect in the context of species distribution modelling. However, DEM-derived variables are scale-dependent an ...
Wiley-Blackwell2015High Resolution Air Pollution Maps in Urban Environments Using Mobile Sensor Networks
Alcherio Martinoli, Ali Marjovi, Adrian Arfire
We propose three modeling methods using a mobile sensor network to generate high spatio-temporal resolution air pollution maps for urban environments. In our deployment in Lausanne (Switzerland), dedicated sensing nodes are anchored to the public buses and ...
IEEE2015Are flat-field snow depth measurements representative? A comparison of selected index sites with areal snow depth measurements at the small catchment scale
Single or a limited number of point observations, such as from index stations, are commonly assumed to be representative for the snow cover of larger areas in many applications. This study presents a systematic investigation of the relationship between poi ...
Wiley-Blackwell2015Additive Smooth Modelling with Splines
Linear regression summarises the link between a variable of interest and one or several explanatory variables through a parametric relationship. Hastie and Tibshirani (1986) extended this approach by allowing a non-parametric description of the dependence ...
2014Modeling the monthly mean stream temperature dynamics
Michael Lehning, Wolf Hendrik Huwald, Bettina Schaefli, Aurélien Gallice
Water temperature is a hydrological factor which affects the habitat suitability of many aquatic (fish) species, and is therefore of great concern in the actual context of climate change. Two types of models are currently used to simulate stream temperatur ...
2014Seasonal small-scale spatial variability in alpine snowfall and snow accumulation
Michael Lehning, Alexis Berne, Marc Schneebeli Zeugin, Danny Eddy Scipion Castillo
[1] In mountainous regions, snow accumulation on the ground is crucial for mountain hydrology and water resources. The present study investigates the link between the spatial variability in snowfall and in snow accumulation in the Swiss Alps. A mobile pola ...
American Geophysical Union2013A comparison between two statistical and a physically-based model in snow water equivalent mapping
Michael Lehning, Mathias Thierry Pierre Bavay, Tobias Jonas
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 ...
Elsevier2013A Quasi-Likelihood Approach to Zero-Inflated Spatial Count Data
The increased accessibility of data that are geographically referenced and correlated increases the demand for techniques of spatial data analysis. The subset of such data comprised of discrete counts exhibit particular difficulties and the challenges furt ...
EPFL2012Automated approach for rigorous light detection and ranging system calibration without preprocessing and strict terrain coverage requirements
Light detection and ranging (LiDAR) has demonstrated its capabilities as a prominent technique for the direct acquisition of high density and accurate topographic information. To achieve the potential accuracy of such systems, a rigorous system calibration ...
Spie-Soc Photo-Optical Instrumentation Engineers2012