Variability in Antarctic sea ice from 1998 to 2017

Variability in Antarctic sea ice from 1998 to 2017
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1998年至2017年南极海冰变化

DOI:
10.1007/s11356-019-05569-1
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发表时间:
2019-06
影响因子:
5.8
通讯作者:
Wang Xingdong
Wang Xingdong
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Wu Zhankai;Wang Xingdong

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这项研究基于美国宇航局团队算法从1998年到2017年的每日海冰浓度数据。从总海冰面积(SIA)、一年冰面积和多年冰面积三个方面对南极海冰进行了分析。在时间尺度上,研究了整个20多年来海冰参数的变化。结果表明,从1998年到2017年,总的土地利用系数增加了0.0087 × 106km2年−1(+ 2.08%12月−1)。从1998年到2017年,多年冰面积增加了0.0141 × 106 km2年−1。从1998年到2017年,第一年的冰面积减少了− 0.0058 × 106 km2年−1。在空间尺度上,根据海冰集中度的空间变化率,将整个南极划分为西南极(WA)和东南极(EA)两个区域。西澳海冰总量和多年冰面积呈减少趋势。但总的SIA和多年冰面积都呈现出EA增加的趋势。因此,南极海冰呈增加趋势,但Wa和Ea的变化趋势不同。
This study was based on the daily sea ice concentration data from the NASA Team algorithm from 1998 to 2017. The Antarctic sea ice was analyzed from the total sea ice area (SIA), first-year ice area, and multiyear ice area. On a temporal scale, the changes in sea ice parameters were studied over the whole 20 years. The results showed that the total SIA increased by 0.0087 × 106km2year−1(+ 2.08% dec−1) between 1998 and 2017. The multiyear ice area increased by 0.0141 × 106km2year−1from 1998 to 2017. The first-year ice area decreased by − 0.0058 × 106km2year−1between 1998 and 2017. On a spatial scale, the entire Antarctic was divided into two areas, namely West Antarctica (WA) and East Antarctica (EA), according to the spatial change rate of sea ice concentration. The total sea ice and multiyear ice areas showed a decreasing trend in WA. However, the total SIA and multiyear ice area all showed an increasing trend in EA. Therefore, Antarctic sea ice presented an increasing trend, but there were different trends in WA and EA.
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发表时间: 2011-05
影响因子: 3
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