气候变化领域集成服务门户(CCPortal): Presentation and evaluation of the Arctic sea ice forecasting system neXtSIM-F

CCPortal

DOI	10.5194/tc-15-3207-2021
	Presentation and evaluation of the Arctic sea ice forecasting system neXtSIM-F
	Williams T.; Korosov A.; Rampal P.; Ólason E.
发表日期	2021
ISSN	19940416
起始页码	3207
结束页码	3227
卷号	15 期号:7
英文摘要	The neXtSIM-F (neXtSIM forecast) forecasting system consists of a stand-alone sea ice model, neXtSIM (neXt-generation Sea Ice Model), forced by the TOPAZ ocean forecast and the ECMWF atmospheric forecast, combined with daily data assimilation of sea ice concentration. It uses the novel brittle Bingham-Maxwell (BBM) sea ice rheology, making it the first forecast based on a continuum model not to use the viscous-plastic (VP) rheology. It was tested in the Arctic for the time period November 2018-June 2020 and was found to perform well, although there are some shortcomings. Despite drift not being assimilated in our system, the sea ice drift is good throughout the year, being relatively unbiased, even for longer lead times like 5ĝ€¯d. The RMSE in speed and the total RMSE are also good for the first 3 or so days, although they both increase steadily with lead time. The thickness distribution is relatively good, although there are some regions that experience excessive thickening with negative implications for the summertime sea ice extent, particularly in the Greenland Sea. The neXtSIM-F forecasting system assimilates OSI SAF sea ice concentration products (both SSMIS and AMSR2) by modifying the initial conditions daily and adding a compensating heat flux to prevent removed ice growing back too quickly. The assimilation greatly improves the sea ice extent for the forecast duration. © Copyright:
英文关键词	forecasting method; sea ice; Arctic Ocean
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202452
作者单位	Nansen Environmental and Remote Sensing Center, Jahnebakken 3, Bergen, 5007, Norway; CNRS, Institut Géophysique de l'Environnement, Grenoble, France
推荐引用方式 GB/T 7714	Williams T.,Korosov A.,Rampal P.,et al. Presentation and evaluation of the Arctic sea ice forecasting system neXtSIM-F[J],2021,15(7).
APA	Williams T.,Korosov A.,Rampal P.,&Ólason E..(2021).Presentation and evaluation of the Arctic sea ice forecasting system neXtSIM-F.Cryosphere,15(7).
MLA	Williams T.,et al."Presentation and evaluation of the Arctic sea ice forecasting system neXtSIM-F".Cryosphere 15.7(2021).