التفاصيل البيبلوغرافية
| العنوان: |
Future evolution of the Greenland Ice Sheet in a coupled climate and ice sheet model: CESM2.1-CISM2.1 contribution to ISMIP6. |
| المؤلفون: |
Muntjewerf, Laura1 (AUTHOR) l.muntjewerf@tudelft.nl, Lipscomb, William2 (AUTHOR), Thayer-Calder, Kate2 (AUTHOR), Sacks, Bill2 (AUTHOR), Bradley, Sarah1,3 (AUTHOR), Lofverstrom, Marcus4 (AUTHOR), Fyke, Jeremy5,6 (AUTHOR), da Silva, Carolina Ernani1 (AUTHOR), Sellevold, Raymond1 (AUTHOR), Petrini, Michele1 (AUTHOR), Vizcaino, Miren1 (AUTHOR) |
| المصدر: |
Geophysical Research Abstracts. 2019, Vol. 21, p1-1. 1p. |
| مصطلحات موضوعية: |
*ICE sheets, *GREENLAND ice, *MERIDIONAL overturning circulation |
| مصطلحات جغرافية: |
GREENLAND |
| مستخلص: |
There are large uncertainties in projections of 21st century and future multi-century globalsea level rise. Part of the uncertainty stems from the lack of ability to robustly resolveinteractions and feedbacks between ice sheets and the rest of the climate system in globalcirculation models. Coupling an ice sheet model to a global climate model will help us in thisregard. The Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6) is a CMIP6-endorsedMIP that focusses on the Greenland and Antarctic Ice Sheets. One ISMIP6 goal is a setof simulations with climate models coupled to ice sheet models (ISM). This willenable to assess the climatic impact of the ice sheet dynamic response onto theclimate. The Community Earth System Model version 2.1 (CESM2.1) includes a of bi-directionalcoupling with the Community Ice Sheet Model (CISM2.1) over the GreenlandIce Sheet. With this model we can assess ice sheet and climate interactions at apreviously unprecedented level of detail. Furthermore, routing of ice sheet meltwater andcalving into the ocean, as well as adaptive ice sheet topography enables studies ofthe impact of a changing ice sheet on future atmospheric and ocean circulationpatterns. Here we present the CESM2.1-CISM2.1 simulations under ISMIP6 guidelines that havebeen analyzed to date. Four simulations will be carried out: 1) a pre-industrial control steadystate simulation (piControl-withism), 2) a 500-year simulation with a 1% yr−1 increase CO2up till the value of 4 times the pre-industrial concentration (1pctCO2to4x-withism), 3)a historical simulation 1850-2015 (historical-withism) and 4) a future evolutionsimulation following the emission scenario RCP8.5 and its extension to year 2,300(ssp585-withism). In the analysis, we focus on key features of the global and polar climate:the time evolution of the North Atlantic Meridional Overturning Circulation strength(NAMOC), the Greenland surface albedo, surface melt and surface mass balance(SMB), and the dynamical ice sheet change and contribution to eustatic sea level rise. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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