Late Winter Observations of Sea Ice Pressure Ridge Sail Height

IF 4 3区地球科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Geoscience and Remote Sensing Letters Pub Date : 2019-01-10 DOI:10.1002/essoar.10500429.1

K. Duncan, S. Farrell, J. Hutchings, J. Richter-Menge

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引用次数: 7

Abstract

Analysis of high-resolution imagery acquired by the Digital Mapping System during annual, late-winter NASA Operation IceBridge surveys of Arctic sea ice between 2010 and 2018 reveals that pressure ridge sail heights (

${H} _{\mathbf {S}}$

) vary regionally and interannually. We find distinct differences in

${H} _{\mathbf {S}}$

distributions between the central Arctic (CA) and the Beaufort/Chukchi Seas region. Our results show that differences with respect to ice type occur within the tails of the

${H} _{\mathbf {S}}$

distributions and that the 95th and 99th percentiles of

${H} _{\mathbf {S}}$

are strong indicators of the predominant ice type in which the pressure ridge formed. During the first part of the study period

${H} _{\mathbf {S}}$

increased, with the largest sails observed in the winters of 2015 and 2016, after which

${H} _{\mathbf {S}}$

declined, suggesting that the most heavily deformed sea ice may have drifted beyond the area surveyed and exited the CA. Our analysis of the interannual and regional variability in sea ice deformation in the western Arctic during the last decade provides an improved understanding of sail height that will help advance ridge parameterizations in sea ice models.

查看原文本刊更多论文

晚冬海冰气压脊帆高观测

对数字测绘系统在2010年至2018年期间NASA冰桥行动年度冬末北极海冰调查期间获得的高分辨率图像进行的分析显示，压力脊帆高(${H} _{\mathbf {S}}$)在区域和年际上都有所不同。我们发现北极中部(CA)和波弗特/楚科奇海地区的${H} _{\mathbf {S}}$分布存在显著差异。我们的研究结果表明，冰类型的差异发生在${H} _{\mathbf {S}}$分布的尾部，${H} _{\mathbf {S}}$的第95和99百分位数是形成压力脊的主要冰类型的有力指标。在研究期的前半段，${H} _{\mathbf {S}}$增加，在2015年和2016年冬季观测到最大的帆，之后${H} _{\mathbf {S}}$下降。这表明变形最严重的海冰可能已经漂移到调查区域之外，并离开了南极区。我们对过去十年来北极西部海冰变形的年际和区域变化的分析提供了对帆高的更好理解，这将有助于推进海冰模式中的脊参数化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Geoscience and Remote Sensing Letters 工程技术-地球化学与地球物理

CiteScore

7.60

自引率

12.50%

发文量

1113

审稿时长

3.4 months

期刊介绍： IEEE Geoscience and Remote Sensing Letters (GRSL) is a monthly publication for short papers (maximum length 5 pages) addressing new ideas and formative concepts in remote sensing as well as important new and timely results and concepts. Papers should relate to the theory, concepts and techniques of science and engineering as applied to sensing the earth, oceans, atmosphere, and space, and the processing, interpretation, and dissemination of this information. The technical content of papers must be both new and significant. Experimental data must be complete and include sufficient description of experimental apparatus, methods, and relevant experimental conditions. GRSL encourages the incorporation of "extended objects" or "multimedia" such as animations to enhance the shorter papers.