Development of a small-scale approach to assess sea ice change using weekly ice charts, with application to Anguniaqvia niqiqyuam Marine Protected Area

IF 2.7 3区 地球科学 Q2 ECOLOGY
K. Gully, J. Iacozza, K. Dunmall
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引用次数: 0

Abstract

Broad-scale changes in sea ice have been documented across the Arctic; however, less is known about sea ice decline at smaller scales, focused at high priority areas such as marine protected areas (MPAs) or places identified as important by Indigenous Peoples. Here we develop a small-scale application of assessing sea ice change using weekly sea ice charts, and apply that to assess sea ice change in Anguniaqvia niqiqyuam MPA (ANMPA) from 1980-2019. Over that 40-year period, sea ice coverage in ANMPA decreased and open water increased by approximately a month (31.6 days at 50% ice; 33.8 days at 20% ice remaining during break up and 80% ice formed during freeze up). Break up has gone from occurring in mid to late July to occurring in late June or early July. Freeze up has changed from occurring mid-October to occurring early November. As sea ice decline may have dramatic impacts for the ecosystem and consequences for the people that rely on this important area, we highlight the need to better understand the impacts of sea ice decline in small-scale priority places and also contribute to the development of community-scale approaches to increase the accessibility of assessing change.
开发一种使用每周冰图评估海冰变化的小规模方法,并应用于Anguniaqvia niqiqyuam海洋保护区
北极海冰的大规模变化已被记录在案;然而,人们对较小规模的海冰减少知之甚少,这些海冰主要集中在海洋保护区或土著人民认为重要的地方等高度优先的地区。在此基础上,建立了基于周海冰图评估海冰变化的小规模应用,并应用该方法对1980-2019年Anguniaqvia niqiqyuam MPA (ANMPA)海冰变化进行了评估。在40年的时间里,ANMPA的海冰覆盖率下降,开放水域增加了大约一个月(31.6天,50%的冰;33.8天,分手时剩下20%的冰,冻结时形成80%的冰)。分手已经从7月中下旬变成了6月下旬或7月初。冰冻从10月中旬变成了11月初。由于海冰减少可能对生态系统和依赖这一重要区域的人们产生巨大影响,我们强调有必要更好地了解小规模优先地点海冰减少的影响,并促进社区尺度方法的发展,以增加评估变化的可及性。
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来源期刊
Arctic Science
Arctic Science Agricultural and Biological Sciences-General Agricultural and Biological Sciences
CiteScore
5.00
自引率
12.10%
发文量
81
期刊介绍: Arctic Science is an interdisciplinary journal that publishes original peer-reviewed research from all areas of natural science and applied science & engineering related to northern Polar Regions. The focus on basic and applied science includes the traditional knowledge and observations of the indigenous peoples of the region as well as cutting-edge developments in biological, chemical, physical and engineering science in all northern environments. Reports on interdisciplinary research are encouraged. Special issues and sections dealing with important issues in northern polar science are also considered.
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