南极冰层的趋势和联系
Andrew Shepherd1, Helen Amanda Fricker2, Sinead Louise Farrell3
1Centre for Polar Observation and Modelling, University of Leeds, Leeds, UK. a.shepherd@leeds.ac.uk.
Nature
|June 15, 2018
概括
卫星数据显示南极冰层发生了重大变化. 冰架的减少对冰川产生影响,而南极海冰则表现出高度的变化和潜在的长期下降.
科学领域:
- 地球科学
- 冰川学
- 气候科学
背景情况:
- 南极冰层储存了地球上大部分的淡水.
- 浮冰架是内陆冰的稳定性的关键调节者.
- 南极海冰表现出显著的季节性和跨年变化.
研究的目的:
- 总结卫星观测对了解南极冰层的影响.
- 突出冰架的变化及其对冰川的影响.
- 描述南极海冰范围和变化的趋势.
主要方法:
- 卫星遥感观测结果
- 分析冰架厚度和范围的数据.
- 监测冰川的动态 (退缩,加速,下降).
- 评估南极海冰的范围和随着时间的变化.
主要成果:
- 已经观察到冰架范围和厚度的减少.
- 这些变化导致了内陆冰的干扰,包括冰川的退缩和加速.
- 自20世纪70年代以来,南极海冰的面积略有增加,但年际变化很大,长期下降的证据也很明显.
结论:
- 卫星观测对于监测南极冰的变化至关重要.
- 冰架的变化对冰川的行为和海平面产生了连续的影响.
- 南极海冰的动态很复杂,需要持续监测.
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