CR3.05 Media

All components of the cryosphere are strongly impacted by climate change and have been undergoing significant changes over the past decades. Most visibly, glaciers are shrinking and thinning. Snow cover and duration is reduced, and permafrost, in both Arctic and alpine environments, is thawing. Changes in sea ice cover and characteristics have attracted widespread attention, and changes in ice sheets are monitored with care and concern.
Risks associated with one or several of these cryosphere components have been present throughout history. However, as well documented atmospheric warming continues, we expect changes in the magnitude and frequency of hazards with profound implications for risks. New or growing glacier lakes pose a threat to downstream communities through the potential for sudden drainage. Thawing permafrost can destabilize mountain flanks, and eventually result in destructive rock and ice avalanches. An accelerated rate of permafrost degradation in low-land areas poses risk to existing and planned infrastructure and raises concerns about large-scale emission of greenhouse gases currently trapped in Arctic permafrost. Decreased summertime sea ice extent may produce both risks and opportunities in terms of large-scale climate feedbacks and alterations, coastal vulnerability, and new access to transport routes and natural resources. Eventually, rapid acceleration of outlet glacier ice discharge and collapse of ice sheets is of major concern for sea level change.
This session invites contributions across all cryosphere components that addresses risks associated with observed or projected physical processes. Contributions considering more than one cryosphere component (e.g. glaciers and permafrost) are particularly encouraged. Contributions can consider hazards and risks related to changes in the past, present or future. Discussion of both new risks and opportunities are encouraged, as long as an evidence based, critical analysis is provided.

Co-sponsored by IACS and IPA
Convener: Christian Huggel | Co-conveners: Michael Krautblatter, Josefine Lenz
| Tue, 09 Apr, 14:00–15:45
Room 1.85
| Attendance Mon, 08 Apr, 08:30–10:15
Hall X4

Tuesday, 9 April 2019 | Room 1.85

Chairperson: Huggel/Krautblatter
14:00–14:15 |
| solicited
| Highlight
Dan Shugar, Aaron Burr, Umesh Haritashya, Jeffrey Kargel, Scott Watson, Alex Bevington, Nick Steiner, Richard Betts, Stephan Harrison, Katherine Strattman, and Maureen Kennedy
14:15–14:30 |
| solicited
Jannik Martens, Birgit Wild, August Andersson, Igor Semiletov, Natalia Shakhova, Oleg V. Dudarev, Denis Kosmach, Alexander Charkin, Evgeny Romankevich, Alexander Vetrov, Leopold Lobkovsky, Nikolay Belyaev, and Örjan Gustafsson
14:30–14:45 |
Pardeep Pall, Lena Tallaksen, and Frode Stordal
15:00–15:15 |
Fabrizio Troilo, Valerio Segor, Alberto Godio, Diego Franco, Elena Motta, Paolo Perret, and Simone Gottardelli
15:15–15:30 |
David Bigelow, Gwenn Flowers, Christian Schoof, Laurent Mingo, Erik Young, and Braden Connal
15:30–15:45 |
Sigríður Sif Gylfadóttir, Martin Mergili, Tómas Jóhannesson, Jón Kristinn Helgason, Þorsteinn Sæmundsson, Jan-Thomas Fischer, and Shiva P. Pudasaini