DOI: 10.5194/tc-14-3523-2020
论文题名: Observations of sea ice melt from Operation IceBridge imagery
作者: Wright N.C. ; Polashenski C.M. ; McMichael S.T. ; Beyer R.A.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期: 10 起始页码: 3523
结束页码: 3536
语种: 英语
英文关键词: albedo
; algorithm
; digital mapping
; image analysis
; meltwater
; ocean island basalt
; Pleiades
; satellite altimetry
; sea ice
; Arctic
英文摘要: The summer albedo of Arctic sea ice is heavily dependent on the fraction and color of melt ponds that form on the ice surface. This work presents a new dataset of sea ice surface fractions along Operation IceBridge (OIB) flight tracks derived from the Digital Mapping System optical imagery set. This dataset was created by deploying version 2 of the Open Source Sea-ice Processing (OSSP) algorithm to NASA's Advanced Supercomputing Pleiades System. These new surface fraction results are then analyzed to investigate the behavior of meltwater on first-year ice in comparison to multiyear ice. Observations herein show that first-year ice does not ubiquitously have a higher melt pond fraction than multiyear ice under the same forcing conditions, contrary to established knowledge in the sea ice community. We discover and document a larger possible spread of pond fractions on first-year ice leading to both high and low pond coverage, in contrast to the uniform melt evolution that has been previously observed on multiyear ice floes. We also present a selection of optical images that capture both the typical and atypical ice types, as observed from the OIB dataset. The derived OIB data presented here will be key to explore the behavior of melt pond formation Arctic sea ice. © 2020 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164629
Appears in Collections: 气候变化与战略
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作者单位: Thayer School of Engineering, Dartmouth College, Hanover, NH, United States; U.S. Army Cold Regions Research and Engineering Laboratories, Hanover, NH, United States; NASA Ames Research Center, Moffet Field, CA, United States; SETI Institute, Mountain View, CA, United States
Recommended Citation:
Wright N.C.,Polashenski C.M.,McMichael S.T.,et al. Observations of sea ice melt from Operation IceBridge imagery[J]. Cryosphere,2020-01-01,14(10)