Publications associées à Neige

Precipitation over the Southern Ocean: synoptic analysis and model evaluation using ground-based remote sensing and in-situ measurements

Michael Lehning, Irina Gorodetskaya, Katherine Colby Leonard, Etienne Gabriel Henri Vignon

Precipitation is still a poorly known variable in the Southern Ocean/Antarctica due to the lack of measurements. Unique precipitation measurements were carried out during the Swiss Polar Institute"s Antarctic Circumnavigation Expedition (ACE) (December 201 ...

2021

Crack propagation speeds in weak snowpack layers

Johan Alexandre Philippe Gaume, Jürg Schweizer, Bertil Trottet, Grégoire Bobillier, Alec van Herwijnen

For the release of a slab avalanche, crack propagation within a weak snowpack layer below a cohesive snow slab is required. As crack speed measurements can give insight into underlying processes, we analysed three crack propagation events that occurred in ...

CAMBRIDGE UNIV PRESS2021

Quantifying the Impact of Primary vs Secondary Ice Production on Arctic Clouds

Athanasios Nenes, Georgia Sotiropoulou

Ice formation remains among the most poorly understood and hence poorly represented cloud processes in climate models. Primary ice production (PIP) has been recognized as a key process for the correct representation of the modeled cloud feedbacks; secondar ...

American Geophysical Union2021

Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments

Johan Alexandre Philippe Gaume, Jürg Schweizer, Grégoire Bobillier, Alec van Herwijnen

Dry-snow slab avalanches result from crack propagation in a highly porous weak layer buried within a stratified and metastable snowpack. While our understanding of slab avalanche mechanisms improved with recent experimental and numerical advances, fundamen ...

NATURE RESEARCH2021

Radar measurements of blowing snow off a mountain ridge

Michael Lehning, Wolf Hendrik Huwald, Josué Etienne Gehring, Benjamin Andreas Walter

Modelling and forecasting wind-driven redistribution of snow in mountainous regions with its implications on avalanche danger, mountain hydrology or flood hazard is still a challenging task often lacking in essential details. Measurements of drifting and b ...

2020

The Impact of Diffusive Water Vapor Transport on Snow Profiles in Deep and Shallow Snow Covers and on Sea Ice

Varun Sharma, Michael Lehning, Adrien Michel, Mahdi Jafari, Nander Wever, Isabelle Amandine Gouttevin, Margaux Caroline Patricia Couttet

Water vapor transport has been highlighted as a critical process in Arctic snowpacks, shaping the snow cover structure in terms of density, thermal conductivity, and temperature profile among others. Here, we present an attempt to describe the thermally-in ...

2020

Identification of blowing snow particles in images from a Multi-Angle Snowflake Camera

Alexis Berne, Christophe Praz, Mathieu Oscar Schaer

A new method to automatically discriminate between hydrometeors and blowing snow particles on MultiAngle Snowflake Camera (MASC) images is introduced. The method uses four selected descriptors related to the image frequency, the number of particles detecte ...

COPERNICUS GESELLSCHAFT MBH2020

Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model

Michael Lehning, Katherine Colby Leonard, Nander Wever

Sea ice is an important component of the global climate system. The presence of a snowpack covering sea ice can strongly modify the thermodynamic behavior of the sea ice, due to the low thermal conductivity and high albedo of snow. The snowpack can be stra ...

COPERNICUS GESELLSCHAFT MBH2020

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Neige

Precipitation over the Southern Ocean: synoptic analysis and model evaluation using ground-based remote sensing and in-situ measurements

Differentiation of coarse-mode anthropogenic, marine and dust particles in the High Arctic islands of Svalbard

Crack propagation speeds in weak snowpack layers

Quantifying the Impact of Primary vs Secondary Ice Production on Arctic Clouds

Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments

Radar measurements of blowing snow off a mountain ridge

The Impact of Diffusive Water Vapor Transport on Snow Profiles in Deep and Shallow Snow Covers and on Sea Ice

The monitoring and modelling of snow preparation in alpine and cross country ski areas

Identification of blowing snow particles in images from a Multi-Angle Snowflake Camera

Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model

Graph Chatbot

Chattez avec Graph Search

Differentiation of coarse-mode anthropogenic, marine and dust particles in the High Arctic islands of Svalbard

Quantifying the Impact of Primary vs Secondary Ice Production on Arctic Clouds

Crack propagation speeds in weak snowpack layers

Precipitation over the Southern Ocean: synoptic analysis and model evaluation using ground-based remote sensing and in-situ measurements

Radar measurements of blowing snow off a mountain ridge

The Impact of Diffusive Water Vapor Transport on Snow Profiles in Deep and Shallow Snow Covers and on Sea Ice

The monitoring and modelling of snow preparation in alpine and cross country ski areas

Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments

Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model

Identification of blowing snow particles in images from a Multi-Angle Snowflake Camera