气候变化领域集成服务门户(CCPortal): Assessment of Sea Ice Extent in CMIP6 With Comparison to Observations and CMIP5

CCPortal

DOI	10.1029/2020GL087965
	Assessment of Sea Ice Extent in CMIP6 With Comparison to Observations and CMIP5
	Shu Q.; Wang Q.; Song Z.; Qiao F.; Zhao J.; Chu M.; Li X.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	Both the Arctic and Antarctic sea ice extents (SIEs) from 44 coupled models in the Coupled Model Intercomparison Project Phase 6 (CMIP6) are evaluated by comparing them with observations and CMIP5 results. The CMIP6 multimodel mean can adequately reproduce the seasonal cycles of both the Arctic and Antarctic SIE. The observed Arctic September SIE declining trend (−0.82 ± 0.18 million km2 per decade) between 1979 and 2014 is slightly underestimated in CMIP6 models (−0.70 ± 0.06 million km2 per decade). The observed weak but significant upward trend of the Antarctic SIE is not captured, which was an issue already in the CMIP5 phase. Compared with CMIP5 models, CMIP6 models have lower intermodel spreads in SIE mean values and trends, although their SIE biases are relatively larger. The CMIP6 models did not reproduce the new summer tendencies after 2000, including the faster decline of Arctic SIE and the larger interannual variability in Antarctic SIE. ©2020 The Authors.
英文关键词	Sea ice; Antarctic sea ice; Coupled Model Intercomparison Project; Coupled models; Interannual variability; Mean values; Sea ice extent; Seasonal cycle; Upward trend; Climate models; annual variation; climate effect; CMIP; comparative study; decadal variation; sea ice; snowmelt; Arctic and Antarctic
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170411
作者单位	First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Marine Science and Numerical Modeling, Ministry of Natural Resources, Qingdao, China; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven, Germany; National Marine Environmental Forecasting Center, Beijing, China; Beijing Climate Center, China Meteorological Administration, Beijing, China
推荐引用方式 GB/T 7714	Shu Q.,Wang Q.,Song Z.,et al. Assessment of Sea Ice Extent in CMIP6 With Comparison to Observations and CMIP5[J],2020,47(9).
APA	Shu Q..,Wang Q..,Song Z..,Qiao F..,Zhao J..,...&Li X..(2020).Assessment of Sea Ice Extent in CMIP6 With Comparison to Observations and CMIP5.Geophysical Research Letters,47(9).
MLA	Shu Q.,et al."Assessment of Sea Ice Extent in CMIP6 With Comparison to Observations and CMIP5".Geophysical Research Letters 47.9(2020).