气候变化领域集成服务门户(CCPortal): Spring melt pond fraction in the Canadian Arctic Archipelago predicted from RADARSAT-2

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DOI	10.5194/tc-14-4675-2020
	Spring melt pond fraction in the Canadian Arctic Archipelago predicted from RADARSAT-2
	Howell S.E.L.; Scharien R.K.; Landy J.; Brady M.
发表日期	2020
ISSN	19940416
起始页码	4675
结束页码	4686
卷号	14 期号:12
英文摘要	Melt ponds form on the surface of Arctic sea ice during spring, influencing how much solar radiation is absorbed into the sea ice ocean system, which in turn impacts the ablation of sea ice during the melt season. Accordingly, melt pond fraction (fp) has been shown to be a useful predictor of sea ice area during the summer months. Sea ice dynamic and thermodynamic processes operating within the narrow channels and inlets of the Canadian Arctic Archipelago (CAA) during the summer months are difficult for model simulations to accurately resolve. Additional information on fp variability in advance of the melt season within the CAA could help constrain model simulations and/or provide useful information in advance of the shipping season. Here, we use RADARSAT-2 imagery to predict and analyze peak melt pond fraction (fpk) and evaluate its utility to provide predictive information with respect to sea ice area during the melt season within the CAA from 2009 2018. The temporal variability of RADARSAT-2 fpk over the 10-year record was found to be strongly linked to the variability of mean April multi-year ice area with a statistically significant detrended correlation (R) of R D 0.89. The spatial distribution of RADARSAT-2 fpk was found to be in excellent agreement with the sea ice stage of development prior to the melt season. RADARSAT-2 fpk values were in good agreement with fpk observed from in situ observations but were found to be 0.05 larger compared to MODIS fpk observations. Dynamically stable sea ice regions within the CAA exhibited higher detrended correlations between RADARSAT-2 fpk and summer sea ice area. Our results show that RADARSAT-2 fpk can be used to provide predictive information about summer sea ice area for a key shipping region of the Northwest Passage. © 2016 SPIE. All rights reserved.
英文关键词	fractionation; MODIS; pond; RADARSAT; satellite altimetry; sea ice; seasonality; snowmelt; solar radiation; Arctic Ocean; Canada; Canadian Arctic; Northwest Passage
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/202107
作者单位	Climate Research Division, Environment and Climate Change Canada, Toronto, M3H 5T4, Canada; Department of Geography, University of Victoria, Victoria, V8W 2Y2, Canada; School of Geographical Sciences, University of Bristol, Bristol, BS8 1QU, United Kingdom
推荐引用方式 GB/T 7714	Howell S.E.L.,Scharien R.K.,Landy J.,et al. Spring melt pond fraction in the Canadian Arctic Archipelago predicted from RADARSAT-2[J],2020,14(12).
APA	Howell S.E.L.,Scharien R.K.,Landy J.,&Brady M..(2020).Spring melt pond fraction in the Canadian Arctic Archipelago predicted from RADARSAT-2.Cryosphere,14(12).
MLA	Howell S.E.L.,et al."Spring melt pond fraction in the Canadian Arctic Archipelago predicted from RADARSAT-2".Cryosphere 14.12(2020).