气候变化领域集成服务门户(CCPortal): Impact of a New Sea Ice Thermodynamic Formulation in the CESM2 Sea Ice Component

CCPortal

DOI	10.1029/2020MS002154
	Impact of a New Sea Ice Thermodynamic Formulation in the CESM2 Sea Ice Component
	Bailey D.A.; Holland M.M.; DuVivier A.K.; Hunke E.C.; Turner A.K.
发表日期	2020
ISSN	19422466
卷号	12 期号:11
英文摘要	The sea ice component of the Community Earth System Model version 2 (CESM2) contains new “mushy-layer” physics that simulates prognostic salinity in the sea ice, with consequent modifications to sea ice thermodynamics and the treatment of melt ponds. The changes to the sea ice model and their influence on coupled model simulations are described here. Two simulations were performed to assess the changes in the vertical thermodynamics formulation with prognostic salinity compared to a constant salinity profile. Inclusion of the mushy layer thermodynamics of Turner et al. (2013, https://doi.org/10.1002/jgrc.20171) in a fully coupled Earth system model produces thicker and more extensive sea ice in the Arctic, with relatively unchanged sea ice in the Antarctic compared to simulations using a constant salinity profile. While this is consistent with the findings of uncoupled ice-ocean model studies, the role of the frazil and congelation growth is more important in fully coupled simulations. Melt pond drainage is also an important contribution to simulated ice thickness differences as also found in the uncoupled simulations of Turner and Hunke (2015; https://doi.org/10.1002/2014JC010358). However, it is an interaction of the ponds and the snow fraction that impacts the surface albedo and hence the top melt. The changes in the thermodynamics and resulting ice state modify the ice-ocean-atmosphere fluxes with impacts on the atmosphere and ocean states, particularly temperature. ©2020. The Authors.
英文关键词	coupled Earth system model; sea ice modeling
语种	英语
scopus关键词	HTTP; Lakes; Thermodynamics; Coupled modeling; Earth system model; Ice-ocean models; Ocean atmosphere; Sea ice modeling; Sea-ice components; Snow fractions; Thermodynamic formulation; Sea ice; atmosphere-ocean coupling; ice thickness; ice-ocean interaction; sea ice; thermodynamics; Arctic
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/156597
作者单位	National Center for Atmospheric Research, Boulder, CO, United States; Los Alamos National Laboratory, Los Alamos, NM, United States
推荐引用方式 GB/T 7714	Bailey D.A.,Holland M.M.,DuVivier A.K.,et al. Impact of a New Sea Ice Thermodynamic Formulation in the CESM2 Sea Ice Component[J],2020,12(11).
APA	Bailey D.A.,Holland M.M.,DuVivier A.K.,Hunke E.C.,&Turner A.K..(2020).Impact of a New Sea Ice Thermodynamic Formulation in the CESM2 Sea Ice Component.Journal of Advances in Modeling Earth Systems,12(11).
MLA	Bailey D.A.,et al."Impact of a New Sea Ice Thermodynamic Formulation in the CESM2 Sea Ice Component".Journal of Advances in Modeling Earth Systems 12.11(2020).