Dr. Paul Bierman, Professor of Environmental Science at the University of Vermont, summarized his recent paper on ancient soil remains from an ice core taken at Summit Station, at nearly the highest point of the ice sheet (3 kilometers of ice). Fossils in the sediment reveal that this site was ice-free in Earth’s not-so-distant past, […]
Earth’s Future, 4 September 2024 An updated model comparison experiment (ISMIP6 Antarctica 2300) has provided the first multi-model and multi-century projections of Antarctic Ice Sheet loss to the year 2300. Using 16 different ice sheet models, authors highlight the sharp risk of triggering large increases in Antarctic ice loss accelerating after the year 2100 if […]
Nature Cities, 26 August 2024 Current measures taken by most coastal cities to adapt to climate change, especially in light of cryosphere-related impacts such as rising seas, extreme weather and flooding, are presently inadequate, according to this new study published in advance of the upcoming IPCC Special Report on Cities. Authors systematically evaluated the strategies […]
United Nations and WMO, 26 August 2024 In Tonga, UN Secretary-General António Guterres released a special briefing on sea-level rise alongside the World Meteorological Organization’s (WMO’s) State of the Climate in the South-West Pacific 2023 Report. The UNSG’s brief summarizes the latest science on future sea level-rise at a global and regional level, with a […]
Global impacts, especially loss and damage, from cryosphere feedbacks will be largely permanent on human timescales, beyond adaptation limits for billions living in coastal or mountain-dependent regions if carbon emissions overshoot 1.5°C. This session outlined the latest science on projected feedbacks from ice sheets and glaciers in the context of implementation timeframes. Dr. Florence Colleoni […]
Science Advances, 21 August 2024 The collapse of ice shelves around Antarctica could expose tall ice cliffs at the edge of the ice sheet. Some models have shown that once the protective ice shelves are lost, these cliffs may fail structurally and collapse, leading to rapid ice loss and extremely fast rates of sea-level rise. […]
The Cryosphere, 15 August 2024 The Arctic contains one-fourth of the world’s glaciers, and this study detailed how rising temperatures are causing them to melt faster. Glaciers consist of compressed snow that accumulates over many years, turning into thick ice. Snowfall that accumulates on top of glacier ice also insulates it from summer melt. Researchers […]
Science Advances, August 4, 2024 A state-of-the-art ice sheet model predicting future sea-level rise shows that humanity may be able to kickstart strong stabilizing feedbacks that could greatly reduce Antarctic ice loss if rapid emissions reductions are taken within the next few years. The study showed that under low carbon emissions, rebounding areas of the […]
PNAS, August 5, 2024 The center of Greenland – currently buried under a 3-kilometer-thick sheet of ice – supported plant life indicating that it was completely ice-free even when CO2 concentrations were far lower than today’s levels, sometime within the past million years. The authors examined ancient remains of soil from the base of an […]
亚历山大·布拉德利博士是英国南极调查局的冰-海模型师，也是伦敦国王学院的访问研究员。他的研究侧重于了解冰盖如何以及为何变化；过去和未来的海平面上升；以及不断变化的冰冻圈对世界各地社会的影响。本次 8 月 1 日的讲座总结了他的 [...]
尊敬的冰冻圈展馆和冰冻圈胶囊的读者们！ 2024年联合国气候变化大会（COP29，11月11日至22日在阿塞拜疆巴库举行）冰冻圈展馆的边会申请流程现已开放！在巴库，我们计划再次通过一系列与政策息息相关的边会，继续传递关于紧迫行动的冰冻圈信息。我们今年的分配空间[…]
自然通讯，2024年8月1日 新的分析显示，即使长期温度在2300年之前恢复到1.5°C，目前的气候政策也不够积极，无法阻止临界点的到来。作者们研究了在气温暂时超过1.5°C但随后利用负排放技术将全球气温降下来的临界风险。 […]
科学，2024年8月1日 根据一项新研究，热带安第斯山脉冰川冰的流失速度是至少过去11,700年以来前所未有的。研究人员测量了高能宇宙射线与热带安第斯山脉冰川边缘暴露在阳光下的岩石相互作用时产生的稀有核素（同位素）。他们的[...]
新闻简报，2024年8月2日 目前，南极洲东部正经历严冬，气温却比往常高出28摄氏度。这是该地区在过去两年中经历的第二次重大热浪，预计还将持续10天。气温维持在零下20摄氏度左右，由 […]
在今年早些时候举行的“北极21”科学政策简报会上的这次演讲中，乔纳森·威利博士解读了2022年3月创纪录的南极洲东部热浪，包括其对南极冰盖的影响。这场极端高温事件打破了许多3月份的温度记录，出现了前所未有的沿海降雨和融化，气温比平均水平高出30-40摄氏度，[...]