Concept

GIS and hydrology

Publications associées (10)

Implications of observation-enhanced energy-balance snowmelt simulations for runoff modeling of Alpine catchments

Snow is an important component of the water balance of many mountain watersheds worldwide. In a warming climate, snowmelt modeling and consequent soil water input, is often challenged by complex conditions such as rain-on-snow situations. This is why detai ...

ELSEVIER SCI LTD2019

Representation of Horizontal Transport Processes in Snowmelt Modeling by Applying a Footprint Approach

Michael Lehning, Sebastian Schlögl, Charles Fierz

The energy balance of an alpine snow cover significantly changes once the snow cover gets patchy. The local advection of warm air causes above-average snow ablation rates at the upwind edge of the snow patch. As lateral transport processes are typically no ...

FRONTIERS MEDIA SA2018

A comparison between remotely-sensed and modelled surface soil moisture (and frozen status) at high latitudes

Isabelle Amandine Gouttevin

In this study, the combined surface status and surface soil moisture products retrieved by the ASCAT sensor within the ESA-DUE Permafrost project are compared to the hydrological outputs of the land surface model ORCHIDEE over Northern Eurasia. The objecti ...

2013

Characterizing the spatial snow depth distribution in mountainous terrain

Michael Lehning, Henning Löwe, Tobias Jonas, Thomas Grünewald

Spatial snow depth information is an essential component for many applications such as the computation of snow melt rates in hydrologic applications or the energy balance in meteorological or climate models. Due to computational constraints, small-scale di ...

2013

Comparison of hydrologic response between a conceptual and a travel time distribution model for a snow-covered alpine catchment using Alpine3D

Andrea Rinaldo, Michael Lehning, Marc Parlange, Bettina Schaefli, Francesco Comola, Mathias Thierry Pierre Bavay, Raphaël Mutzner

Fully distributed models of alpine catchment surface processes typically use the geomorphological information provided by digital maps for describing the dynamics of rain, snow, soil and vegetation with much detail. Physically based hydrological models wou ...

2013

Hydrologic response simulation of a snow-covered alpine catchment using a travel time distribution model coupled to alpine3D

Francesco Comola

2013

Modelling wind-driven rain on buildings in urbanized area using 3-D GIS and LiDAR datasets

Luca Rossi, François Golay, Sylvain Coutu, Claudio Magalhaes Carneiro, Pauline Emery, Vera Wyrsch

This study investigated the distribution of the fraction of rainfall intercepted by the facades of buildings located in an urbanized area. We used the frequently used semi-empirical standard ISO-15927-3 to simulate Wind-Driven Rain on facades. The implemen ...

Elsevier2012

A Systems-Based Generic Decision Support System Application to Urban Water Management

Colin Schenk

In the field of environmental management, inefficient piecemeal sectorial approaches are still widespread, particularly in water resources management, where concerns and decisions are usually split among a set of rather weakly linked stakeholders. Planning ...

EPFL2010

Éléments méthodologiques de diagnostic paysager utilisant les systèmes d'information géographique

Joël Chételat

Although landscape is not a recent notion, its place in environmental management is now of major concern. Unprecedented land transformations have become a source of worry in terms of impacts on the landscape. The dynamics are still poorly understood and ne ...

EPFL2005

Statistical analysis of drainage density from digital terrain data

Andrea Rinaldo

Drainage density (D-d), defined as the total length of channels per unit area, is a fundamental property of natural terrain that reflects local climate, relief, geology, and other factors. Accurate measurement of D-d is important for numerous geomorphic an ...

2001

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