Antarctic sea-ice in a changing planet - insights from palaeoclimate archives.

不断变化的星球中的南极海冰——来自古气候档案的见解。

• 批准号: 2600312
• 金额: --
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2600312
• 关键词: Antarctic; sea; ice; changing; planet

Sea ice is currently undergoing major changes. In the Arctic, sea ice has been declining rapidly over the last few decades, with an expectation of amplified global climate change due to ice-albedo feedbacks. Conversely, the total Antarctic sea ice cover has been steadily increasing since systematic satellite observations began in the late 1970s, although a precipitous decline since 2014 has halved the increasing trend for 1979-2018 relative to 1979-2014 [1]. Observations of both Antarctic and Arctic sea ice conditions are limited to the satellite era (post 1970). Thus, it is hard to assess the significance of recent trends. Climate model simulations of future warming are heavily dependent on the historical sea ice area data [2], and thus it is of global importance that we provide reliable paleo-sea ice reconstructions to ensure that the climate models tasked with predicting future changes are fully optimised.

海冰目前正在发生重大变化。在北极，海冰在过去几十年里一直在迅速减少，预计由于冰反照率反馈将加剧全球气候变化。相反，自 1970 年代末开始系统卫星观测以来，南极海冰总覆盖面积一直在稳步增加，尽管自 2014 年以来急剧下降，使 1979-2018 年的增加趋势较 1979-2014 年减半[1]。对南极和北极海冰状况的观测仅限于卫星时代（1970 年后）。因此，很难评估近期趋势的重要性。未来变暖的气候模型模拟在很大程度上依赖于历史海冰面积数据[2]，因此我们提供可靠的古海冰重建以确保负责预测未来变化的气候模型得到充分优化具有全球重要性。