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Wolf Hendrik Huwald

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Banner Cloud Formation at the Matterhorn: Measurements versus Large-Eddy Simulations

Michael Lehning, Wolf Hendrik Huwald, Brandon Jacobus Adrianus Van Schaik

Banner clouds are clouds in the lee of steep mountains or sharp ridges on otherwise cloud-free days. Previous studies identified key mechanisms and preferred flow conditions on the basis of idealized Large-Eddy Simulations, but it remained unclear to what ...

American Meteorological Society2025

The MatterHEX Experiment – Investigating Atmospheric Flow Patterns in Highly Complex Terrain Related to Banner Cloud Formation

Michael Lehning, Wolf Hendrik Huwald, Brandon Jacobus Adrianus Van Schaik

Orographic clouds typically form on the windward side of a topographic barrier when approaching air is cooled as it is lifted, and moisture condenses into cloud droplets. Under special conditions, however, clouds can appear on the leeward side of a mountai ...

American Meteorological Society2025

Influence of air flow features on alpine wind energy potential

Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Franziska Gerber, Fanny Kristianti

Wind energy is one of the potential options to fill the gap in renewable energy production in Switzerland during the winter season when the energy demand exceeds local production capacities. With likely further rising energy consumption in the future, the ...

Frontiers Media Sa2024

Quantifying urban climate response to large-scale forcing modified by local boundary layer effects

Michael Lehning, Wolf Hendrik Huwald, Seyed Mahmood Hamze Ziabari

Over the past two decades, the joint manifestation of global warming and rapid urbanization has significantly increased the occurrence of heatwaves and the formation of urban heat islands in temperate cities. Consequently, this synergy has amplified the fr ...

2024

Evidence of Strong Flux Underestimation by Bulk Parametrizations During Drifting and Blowing Snow

Varun Sharma, Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Armin Sigmund, Daniela Brito Melo, Francesco Comola, Koichi Nishimura

The influence of drifting and blowing snow on surface mass and energy exchange is difficult to quantify due to limitations in both measurements and models, but is still potentially very important over large areas with seasonal or perennial snow cover. We p ...

SPRINGER2023

Combining Weather Station Data and Short-Term LiDAR Deployment to Estimate Wind Energy Potential with Machine Learning: A Case Study from the Swiss Alps

Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Franziska Gerber, Fanny Kristianti

Wind energy potential in complex terrain is still poorly understood and difficult to quantify. With Switzerland’s current efforts to shift to renewable energy resources, it is now becoming even more crucial to investigate the hidden potential of wind energ ...

2023

Dataset for: Future water temperature of rivers in Switzerland under climate change investigated with physics-based models

Michael Lehning, Wolf Hendrik Huwald, Adrien Michel, Bettina Schaefli, Nander Wever

This work presents the first extensive study of climate change impacts on rivers temperature in Switzerland. Results show that even for low emissions scenarios, water temperature increase will lead to adverse effect for both ecosystems and socioeconomic se ...

Zenodo2022

Evidence of Strong Flux Underestimation by Bulk Parametrizations During Drifting and Blowing Snow

Varun Sharma, Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Armin Sigmund, Daniela Brito Melo, Francesco Comola, Koichi Nishimura

2022

Observations and simulations of new snow density in the drifting snow-dominated environment of Antarctica

Michael Lehning, Wolf Hendrik Huwald, Armin Sigmund

Owing to drifting snow processes, snow accumulation and surface density in polar environments are variable in space and time. We present new field data of manual measurements, repeat terrestrial laser scanning and snow micro-penetrometry from Dronning Maud ...

CAMBRIDGE UNIV PRESS2022

Future water temperature of rivers in Switzerland under climate change investigated with physics-based models

Michael Lehning, Wolf Hendrik Huwald, Adrien Michel, Bettina Schaefli, Nander Wever

River ecosystems are highly sensitive to cli-mate change and projected future increase in air tempera-ture is expected to increase the stress for these ecosystems. Rivers are also an important socio-economic factor impact- ing, amongst others, agriculture, ...

2022

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Quantifying urban climate response to large-scale forcing modified by local boundary layer effects

Michael Lehning, Wolf Hendrik Huwald, Seyed Mahmood Hamze Ziabari

2024

Combining Weather Station Data and Short-Term LiDAR Deployment to Estimate Wind Energy Potential with Machine Learning: A Case Study from the Swiss Alps

Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Franziska Gerber, Fanny Kristianti

2023

Dataset for: Future water temperature of rivers in Switzerland under climate change investigated with physics-based models

Michael Lehning, Wolf Hendrik Huwald, Adrien Michel, Bettina Schaefli, Nander Wever

Zenodo2022

Evidence of Strong Flux Underestimation by Bulk Parametrizations During Drifting and Blowing Snow

Varun Sharma, Michael Lehning, Wolf Hendrik Huwald, Jérôme François Sylvain Dujardin, Armin Sigmund, Daniela Brito Melo, Francesco Comola, Koichi Nishimura

SPRINGER2023

The MatterHEX Experiment – Investigating Atmospheric Flow Patterns in Highly Complex Terrain Related to Banner Cloud Formation

Michael Lehning, Wolf Hendrik Huwald, Brandon Jacobus Adrianus Van Schaik

American Meteorological Society2025