Ice sheets play an active role in the climate system by amplifying, pacing, and potentially driving global climate change over a wide range of time scales. The impact of interactions between ice sheets and climate include changes in atmospheric and ocean temperatures and circulation, global biogeochemical cycles, the global hydrological cycle, vegetation, sea level, and land-surface albedo, which in turn cause additional feedbacks in the climate system. This session will present data and modelling results that examine ice sheet interactions with other components of the climate system over several time scales. Among other topics, issues to be addressed in this session include ice sheet-climate interactions from glacial-interglacial to millennial and centennial time scales, the role of ice sheets in Cenozoic global cooling and the mid-Pleistocene transition, reconstructions of past ice sheets and sea level, the current and future evolution of the ice sheets, and the role of ice sheets in abrupt climate change.
We have decided to organise the chat in two parts:
1. During the first part we will go through the existing displays in order and have 5 minutes for each to answer questions from the participants.
Preliminary schedule below. Since we don't know yet the final number of displays available this timing may still change.
10:50 D2558 EGU2020-15058 Did a Beringian ice sheet once exist?
10:55 D2559 EGU2020-5912 Global coupled climate - ice sheet model simulations for the penultimate deglaciation and the last interglacial
11:00 D2561 EGU2020-7844 Impact of mid-glacial ice sheets on the recovery time of the AMOC: Implications on the frequent DO cycles during the mid-glacial period
11:05 D2562 EGU2020-18683 Modelling the surface mass balance of the Greenland Ice Sheet from 6000 BP to the year 2200
11:10 D2563 EGU2020-10601 Greenland ice sheet contribution to 21st century sea level rise as modelled by the coupled CESM2.1-CISM2.1
11:15 D2564 EGU2020-20368 The North Atlantic Oscillation and the Greenland ice sheet in CMIP6
11:20 D2566 EGU2020-5647 A circumpolar coupled ocean – Antarctic ice sheet configuration for investigating recent changes in Southern Ocean heat content
11:25 D2567 EGU2020-2272 Transient Pleistocene simulations with a new coupled climate-ice-sheet model
11:30 D2568 EGU2020-16221 Comparison of peri-Antarctic sub-shelf melt rates in coupled and uncoupled ice-sheet model simulations
11:35 D2570 EGU2020-10255 Coupling the Parallel Ice Sheet Model with the Modular Ocean Model via an Antarctic ice-shelf cavity module
11:40 D2572 EGU2020-11625 AMOC recovery in a multi-centennial scenario using a coupled atmosphere-ocean-ice sheet model
11:45 D2574 EGU2020-21261 The ocean response to changes of the Greenland Ice sheet in a warming climate
11:50 D2577 EGU2020-16815 Dynamic Hydrological Discharge and Lake Modelling for Coupled Climate Model Simulations of the Last Glacial Cycle
11:55 D2578 EGU2020-21686 Greenland ice sheet surface mass balance response to high CO2 forcing: threshold and mechanisms for accelerated surface mass loss
12:00 D2579 EGU2020-17514 A global ensemble-based comparison of the last two glacial inceptions with LCice 2.0
2. Time permitting, we were hoping to discuss a few key questions as an open chat with everybody (authors and participants) around the theme of our session: Ice-sheet and climate interactions. Of course, these discussions are just a starter and we encourage everyone to keep communicating and discussing via other media after the session.
- What is the most important progress in ice sheet-climate model
coupling in the last 5 years? (distinguish paleo and future perspective).
- What model improvement is necessary to address outstanding scientific
- Where do you see important gaps in our knowledge that should be addressed?
- What observational data has had an important impact on our
understanding of ice sheet-climate interactions?
- What paleo archives (kind, location, time frame) would be the most
important to examine/extend to improve our knowledge about ice
Please remember that the chat will not be preserved. Comments and questions on individual displays (that have not been answered) are best posted in the online discussion under the display abstracts. Public discussion and feedback of presentation materials is open to 31 May.