Publications associées à Neige

Modeling snow saltation: the effect of grain size and interparticle cohesion

Varun Sharma, Michael Lehning, Daniela Brito Melo, Francesco Comola, Armin Sigmund

This dataset includes the parallel application and the main results supporting the research article "Modeling snow saltation: the effect of grain size and interparticle cohesion" published at the Journal of Geophysical Research: Atmospheres.The code is a f ...

2021

A unified framework for computational microstructure-based snow mechanics

Johan Alexandre Philippe Gaume, Henning Löwe, Lars Kristoffer Uhlen Blatny, Stephanie Wang

The effective mechanical behavior of snow can be deduced from microstructural homogenization through numerical simulations. Although such numerical upscaling of elasticity and strength of snow microstructures is standard (using FEM), numerical schemes to s ...

2021

Evolution and spatial variability of small-scale surface roughness of snow and sea ice during MOSAiC

Michael Lehning, Marc Schneebeli Zeugin, Dávid Wágner, David Nicholas Wagner

Small-scale surface roughness (on an area of about 0.5 m x 0.5 m) affects remote sensing retrieval algorithms and radiative transfer models, yet data of snow and ice surface roughness over sea ice is scarce. Microwave emissivity, important for satellite re ...

2021

Identification of snowfall microphysical processes from Eulerian vertical gradients of polarimetric radar variables

Alexis Berne, Josué Etienne Gehring, Etienne Gabriel Henri Vignon, Noémie Planat

Polarimetric radar systems are commonly used to study the microphysics of precipitation. While they offer continuous measurements with a large spatial coverage, retrieving information about the microphysical processes that govern the evolution of snowfall ...

COPERNICUS GESELLSCHAFT MBH2021

Mechanisms of slab avalanche release and impact in the Dyatlov Pass incident in 1959

Johan Alexandre Philippe Gaume

The Dyatlov Pass incident is an intriguing unsolved mystery from the last century. In February 1959, a group of nine experienced Russian mountaineers perished during a difficult expedition in the northern Urals. A snow avalanche hypothesis was proposed, am ...

SPRINGERNATURE2021

Modelling the small-scale deposition of snow onto structured Arctic sea ice during a MOSAiC storm using snowBedFoam 1.0.

Michael Lehning, Mahdi Jafari, Océane Hames, Marc Schneebeli Zeugin, David Nicholas Wagner

The remoteness and extreme conditions of the Arctic make it a very difficult environment to investigate. In these regions, the wind has a substantial effect and redistributes a large part of the snow, which complicates precipitation estimates. Moreover, th ...

2021

The relative contribution of secondary ice processes in Alpine mixed-phase clouds

Athanasios Nenes, Alexis Berne, Georgia Sotiropoulou, Paraskevi Georgakaki, Etienne Gabriel Henri Vignon

In-situ observations of mixed-phase clouds (MPCs) forming over mountain tops regularly reveal that ice crystal number concentrations (ICNCs) are orders of magnitude higher than ice-nucleating particle concentrations. This discrepancy has often been attribu ...

2021

Three-dimensional and real-scale modeling of flow regimes in dense snow avalanches

Johan Alexandre Philippe Gaume, Betty Sovilla, Xingyue Li

Snow avalanches cause fatalities and economic loss worldwide and are one of the most dangerous gravitational hazards in mountainous regions. Various flow behaviors have been reported in snow avalanches, making them challenging to be thoroughly understood a ...

2021

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Neige

Modeling snow saltation: the effect of grain size and interparticle cohesion

A unified framework for computational microstructure-based snow mechanics

A snowfall downscaling scheme for mountainous terrain

Evolution and spatial variability of small-scale surface roughness of snow and sea ice during MOSAiC

Identification of snowfall microphysical processes from Eulerian vertical gradients of polarimetric radar variables

Mechanisms of slab avalanche release and impact in the Dyatlov Pass incident in 1959

Modelling the small-scale deposition of snow onto structured Arctic sea ice during a MOSAiC storm using snowBedFoam 1.0.

The relative contribution of secondary ice processes in Alpine mixed-phase clouds

Three-dimensional and real-scale modeling of flow regimes in dense snow avalanches

Assimilation of snow depth data from Sentinel-1 to improve the hydrological model of the Borgne catchment (VS)

Graph Chatbot

Chattez avec Graph Search

Assimilation of snow depth data from Sentinel-1 to improve the hydrological model of the Borgne catchment (VS)

A snowfall downscaling scheme for mountainous terrain

Modeling snow saltation: the effect of grain size and interparticle cohesion

Evolution and spatial variability of small-scale surface roughness of snow and sea ice during MOSAiC

A unified framework for computational microstructure-based snow mechanics

Mechanisms of slab avalanche release and impact in the Dyatlov Pass incident in 1959

Identification of snowfall microphysical processes from Eulerian vertical gradients of polarimetric radar variables

Modelling the small-scale deposition of snow onto structured Arctic sea ice during a MOSAiC storm using snowBedFoam 1.0.

The relative contribution of secondary ice processes in Alpine mixed-phase clouds

Three-dimensional and real-scale modeling of flow regimes in dense snow avalanches