气候变化领域集成服务门户(CCPortal): An Efficient Ice Sheet/Earth System Model Spin-up Procedure for CESM2-CISM2: Description, Evaluation, and Broader Applicability

CCPortal

DOI	10.1029/2019MS001984
	An Efficient Ice Sheet/Earth System Model Spin-up Procedure for CESM2-CISM2: Description, Evaluation, and Broader Applicability
	Lofverstrom M.; Fyke J.G.; Thayer-Calder K.; Muntjewerf L.; Vizcaino M.; Sacks W.J.; Lipscomb W.H.; Otto-Bliesner B.L.; Bradley S.L.
发表日期	2020
ISSN	19422466
卷号	12 期号:8
英文摘要	Spinning up a highly complex, coupled Earth system model (ESM) is a time consuming and computationally demanding exercise. For models with interactive ice sheet components, this becomes a major challenge, as ice sheets are sensitive to bidirectional feedback processes and equilibrate over glacial timescales of up to many millennia. This work describes and demonstrates a computationally tractable, iterative procedure for spinning up a contemporary, highly complex ESM that includes an interactive ice sheet component. The procedure alternates between a computationally expensive coupled configuration and a computationally cheaper configuration where the atmospheric component is replaced by a data model. By periodically regenerating atmospheric forcing consistent with the coupled system, the data atmosphere remains adequately constrained to ensure that the broader model state evolves realistically. The applicability of the method is demonstrated by spinning up the preindustrial climate in the Community Earth System Model Version 2 (CESM2), coupled to the Community Ice Sheet Model Version 2 (CISM2) over Greenland. The equilibrium climate state is similar to the control climate from a coupled simulation with a prescribed Greenland ice sheet, indicating that the iterative procedure is consistent with a traditional spin-up approach without interactive ice sheets. These results suggest that the iterative method presented here provides a faster and computationally cheaper method for spinning up a highly complex ESM, with or without interactive ice sheet components. The method described here has been used to develop the climate/ice sheet initial conditions for transient, ice sheet-enabled simulations with CESM2-CISM2 in the Coupled Model Intercomparison Project Phase 6 (CMIP6). © 2020. The Authors.
英文关键词	Community Earth System Model version 2 (CESM2); Coupled ice-sheet/Earth system modeling; Interactive ice sheets; Spin-up simulation
语种	英语
scopus关键词	Climate models; Earth (planet); Glaciers; Ice control; Iterative methods; Atmospheric components; Atmospheric forcing; Coupled Model Intercomparison Project; Coupled simulation; Earth system model; Greenland Ice Sheet; Ice sheet models; Initial conditions; Ice; atmospheric forcing; climate modeling; CMIP; ice sheet; Arctic; Greenland; Greenland Ice Sheet
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156657
作者单位	Department of Geosciences, University of Arizona, Tucson, AZ, United States; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Associated Engineering Group Ltd., Calgary, AB, Canada; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands; Department of Geography, University of Sheffield, Sheffield, United Kingdom
推荐引用方式 GB/T 7714	Lofverstrom M.,Fyke J.G.,Thayer-Calder K.,et al. An Efficient Ice Sheet/Earth System Model Spin-up Procedure for CESM2-CISM2: Description, Evaluation, and Broader Applicability[J],2020,12(8).
APA	Lofverstrom M..,Fyke J.G..,Thayer-Calder K..,Muntjewerf L..,Vizcaino M..,...&Bradley S.L..(2020).An Efficient Ice Sheet/Earth System Model Spin-up Procedure for CESM2-CISM2: Description, Evaluation, and Broader Applicability.Journal of Advances in Modeling Earth Systems,12(8).
MLA	Lofverstrom M.,et al."An Efficient Ice Sheet/Earth System Model Spin-up Procedure for CESM2-CISM2: Description, Evaluation, and Broader Applicability".Journal of Advances in Modeling Earth Systems 12.8(2020).