DOI: 10.5194/tc-14-4675-2020
论文题名: Spring melt pond fraction in the Canadian Arctic Archipelago predicted from RADARSAT-2
作者: Howell S.E.L. ; Scharien R.K. ; Landy J. ; Brady M.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期: 12 起始页码: 4675
结束页码: 4686
语种: 英语
英文关键词: fractionation
; MODIS
; pond
; RADARSAT
; satellite altimetry
; sea ice
; seasonality
; snowmelt
; solar radiation
; Arctic Ocean
; Canada
; Canadian Arctic
; Northwest Passage
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164485
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Cryosphere,2020-01-01,14(12)