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Capteurs intelligents pour les environnements extrêmes
LaboratoirePublications associées (357)
Hydrogen Peroxide Formation during Ozonation of Olefins and Phenol: Mechanistic Insights from Oxygen Isotope Signatures
Urs von Gunten, Joanna Maria Houska
Mitigation of undesired byproducts from ozonation of dissolved organic matter (DOM) such as aldehydes and ketones is currently hampered by limited knowledge of their precursors and formation pathways. Here, the stable oxygen isotope composition of H2O2 for ...
AMER CHEMICAL SOC2023Isotope Ratio - Discharge Relationships of Solutes Derived From Weathering Reactions
To date, the vast majority of studies seeking to link discharge to solute concentrations have been based on representations of fluid age distributions in watersheds that are time-invariant. As increasingly detailed spatial and temporal datasets become avai ...
New Haven2023Reproducibility Dataset for CRYOWRF v1.0
Varun Sharma, Michael Lehning, Franziska Gerber
This repository contains data required for reproducibility of the results to be published in the associated manuscript. Apart from reproducibility, the attached datasets also serve as templates for new users to adopt CRYOWRF in their research. The datasets ...
2023The Marginal Ice Zone as a dominant source region of atmospheric mercury during central Arctic summertime
Julia Schmale, Ivo Fabio Beck, Hélène Paule Angot
Atmospheric gaseous elemental mercury (GEM) concentrations in the Arctic exhibit a clear summertime maximum, while the origin of this peak is still a matter of debate in the community. Based on summertime observations during the Multidisciplinary drifting ...
2023The Biogeochemical Legacy of Arctic Subglacial Sediments Exposed by Glacier Retreat
During past periods of advance, Arctic glaciers and ice sheets overrode soil, sediments, and vegetation and buried significant stores of organic matter (OM); these glaciers are now shrinking rapidly due to climate warming. Little is known about the biogeoc ...
2022Northern Hemisphere atmospheric history of carbon monoxide since preindustrial times reconstructed from multiple Greenland ice cores
Two Himalayan ice cores display a factor-two decreasing trend of air content over the past two millennia, in contrast to the relatively stable values in Greenland and Antarctica ice cores over the same period. Because the air content can be related with th ...
Copernicus GmbH2022Annual cycle observations of aerosols capable of ice formation in central Arctic clouds
The Arctic is warming faster than anywhere else on Earth, prompting glacial melt, permafrost thaw, and sea ice decline. These severe consequences induce feedbacks that contribute to amplified warming, affecting weather and climate globally. Aerosols and cl ...
2022Highly Active Ice‐Nucleating Particles at the Summer North Pole
The amount of ice versus supercooled water in clouds is important for their radiative properties and role in climate feedbacks. Hence, knowledge of the concentration of ice-nucleating particles (INPs) is needed. Generally, the concentrations of INPs are fo ...
2022Exploring alternative possibilities for sublimation measurements over snow and ice surfaces
Michael Lehning, Wolf Hendrik Huwald, Franziska Gerber, Armin Sigmund
Sublimation of snow is a major depletion mechanism, particularly in dry and windy environments such as high mountains or polar regions. Yet the quantification of the latent heat flux is a difficult task, and both measurements and estimates from models stil ...
2022What are the likely changes in mercury concentration in the Arctic atmosphere and ocean under future emissions scenarios?
Arctic mercury (Hg) concentrations respond to changes in anthropogenic Hg emissions and environmental change. This manuscript, prepared for the 2021 Arctic Monitoring and Assessment Programme Mercury Assessment, explores the response of Arctic Ocean Hg con ...
2022