Concept
Régions polaires
Publications associées (80)
Atmospheric isoprene measurements reveal larger-than-expected Southern Ocean emissions
Julia Schmale, Andrea Baccarini
Isoprene is a key trace component of the atmosphere emitted by vegetation and other organisms. It is highly reactive and can impact atmospheric composition and climate by affecting the greenhouse gases ozone and methane and secondary organic aerosol format ...
2024Impact of intercepted and sub-canopy snow microstructure on snowpack response to rain-on-snow events under a boreal canopy
Michael Lehning, Adrien Michel, Nander Wever, Daniel Nadeau, Benjamin Bouchard
Rain-on-snow events can cause severe flooding in snow-dominated regions. These are expected to become more frequent in the future as climate change shifts the precipitation from snowfall to rainfall. However, little is known about how winter rainfall inter ...
2024Polar oceans and sea ice in a changing climate
Julia Schmale, Hélène Paule Angot, Jenny Thomas
Polar oceans and sea ice cover 15% of the Earth’s ocean surface, and the environment is changing rapidly at both poles. Improving knowledge on the interactions between the atmospheric and oceanic realms in the polar regions, a Surface Ocean–Lower Atmospher ...
2023Synthesis Report on the Environmental Impacts of Polar Research and Logistics in the Polar Regions
Polar sciences are crucial to understand the effects of climate change. 6 out of 9 eco-tipping points identified by the IPCC are situated in the polar regions. Potential rising sea levels, altered weather patterns and changes in sea-currents are all connec ...
2023Towards continuous measurements of snow drift and sublimation in polar environments
Michael Lehning, Wolf Hendrik Huwald, John Martin Kolinski, Yael Frischholz, Armin Sigmund, Balthazar Allegri
In polar regions, and specifically in continental Antarctica, the local surface mass and energy balances can be largely controlled by snow transport in form of drifting and blowing snow particles, and sublimation both from the snow or ice surface and from ...
2023Untangling the influence of Antarctic and Southern Ocean life on clouds
Julia Schmale, Hélène Paule Angot, Jenny Thomas, Markus Frey
Polar environments are among the fastest changing regions on the planet. It is a crucial time to make significant improvements in our understanding of how ocean and ice biogeochemical processes are linked with the atmosphere. This is especially true over A ...
2023Seasonal asymmetries and long-term trends in atmospheric and ionospheric temperatures in polar regions and their dependence on solar activity (SATS)
Brandon Jacobus Adrianus Van Schaik
This is chapter 1 of the State of Environmental Science in Svalbard (SESS) report 2022. We have used temperature measurements from a number of observatories in and above Svalbard to study temperature variations, and their relation to solar activity. Sea te ...
Svalbard Integrated Arctic Earth Observing System2023A Case Study on Drivers of the Isotopic Composition of Water Vapour at the Coast of East Antarctica
Michael Lehning, Armin Sigmund, Riqo Chaar
Stable water isotopes (SWIs) contain valuable information on the past climate and phase changes in the hydrologic cycle. Recently, vapour measurements in the polar regions have provided new insights into the effects of snow-related and atmospheric processe ...
2023CRYOWRF-Model Evaluation and the Effect of Blowing Snow on the Antarctic Surface Mass Balance
Varun Sharma, Michael Lehning, Franziska Gerber
The surface mass balance (SMB) of large polar ice sheets and of snow and ice surfaces in general are incompletely understood because of the complexity of processes involved. One such process, drifting and blowing snow, has only been considered in a very si ...
AMER GEOPHYSICAL UNION2023A Case Study on Drivers of the Isotopic Composition of Water Vapor at the Coast of East Antarctica
Michael Lehning, Armin Sigmund, Riqo Chaar
Stable water isotopes (SWIs) contain valuable information on the past climate and phase changes in the hydrologic cycle. Recently, vapor measurements in the polar regions have provided new insights into the effects of snow-related and atmospheric processes ...
AMER GEOPHYSICAL UNION2023