新闻简报：2022年5月30日 全球气温上升加速了西伯利亚巴塔盖卡火山口的生长，这是世界上最大的永久冻土滑坡。这个“地下之门”火山口深达86米，宽1公里。几十年前，永久冻土突然融化导致该地区塌陷，形成了火山口 […]
欧洲航天局，2022年5月25日 2021年夏天，格陵兰冰盖最高地区有记录以来首次出现降雨。几股强烈的“大气河流”伴随着热浪席卷格陵兰，使夏季气温升至零度以上。大气河流是温暖、蜿蜒的充满湿气的气流 […]
《通信 - 地球与环境》 2022年5月27日 过去一个世纪以来，南极半岛夏季的长期变暖导致南极热浪的强度增加了 25%%，这主要归因于人类排放的增加。2020年2月，南极半岛经历了西极有记录以来最强烈的热浪之一，气温 […]
黑碳（BC）加速了北极冰层的融化，并形成了一个加剧全球变暖的反馈循环；同时，它还对当地社区的健康产生影响。随着海冰的减少，穿越北极的航运通道得以开放，北极航运产生的黑碳排放量正在增加。因此，在2015年至2019年期间，航运产生的黑碳排放量在 […]
News Briefing: May 2022 At this week’s Antarctic Treaty Mechanism meetings in Berlin, the Scientific Committee on Antarctic Research (SCAR) released a key synopsis of the changes taking place in Antarctica and the Southern Ocean. The ACCE Report summarizes the past decade of scientific evidence; and clearly states that global emissions must be reduced to […]
Scientific Reports, 20 May 2022 The combination of rapid sea ice loss with increased human activity – including commercial shipping and oil and gas development – threaten bowhead whale populations in the Arctic. Bowhead whales are one of the few species that live their entire life in Arctic and sub-Arctic regions, living in close association […]
Nature Climate Change, 19 May 2022 Rising temperatures will accelerate glacier ice loss in the Hindu Kush Himalaya, disrupting previously reliable freshwater resources for millions. The Himalayan mountains experience the impacts of climate change more intensely than most other regions of the world, due in part to their high altitude. The glaciers in these mountains […]
Nature Communications, 20 May 2022 Warming in the tropical Pacific Ocean served as the main driver behind the melting of the West Antarctic Ice Sheet ten thousand years ago; and similar conditions today may cause its destabilization. Rising ocean temperatures in the tropics can shift westerly wind currents to the south and generate “atmospheric rivers” […]
Loss of sea ice is associated with permafrost thaw in Earth’s past, likely in part due to damaging wave action. This side event explores that connection, and looks at projections should temperature rise continue. The main presenters include Dr. Gustaf Hugelius, Co-Director of the Bolin Center of Climate Research/Stockholm University; and Robbie Mallet, a Cryosphere […]
Journal of Glaciology, 12 May 2022 Glaciers in the Jáchal river basin of Argentina are rapidly losing ice. One-quarter of the Agua Negra glacier has disappeared within the past sixty years due to unusually high temperatures, exacerbated by a long-term drought. As global temperatures rise, these mountainous desert regions of Argentina experience more intense dry […]
The Cryosphere, 5 May 2022 Arctic sea ice plays a crucial role in protecting the Alaskan coastline from open ocean waves generated in the Beaufort Sea. Seasonal sea ice forms near the shore during the fall, gradually merging with the thicker multi-year ice to create a layer across the surface that dampens the waves underneath. […]
Nature Geoscience, 5 May 2022 The accumulation of sea ice near the Antarctic Peninsula provides a buffer that dampens approaching ocean waves, preventing them from smashing into the ice shelves that buttress the glaciers and ice sheet behind. This layer of defence stabilizes the Antarctic Ice Sheet, reducing the number of icebergs breaking off from […]
News just reached us of the death of renowned Arctic scientist Dr. David Barber, founder and Director of the Centre for Earth Observation Science (CERC) at the University of Manitoba, on April 15 at the age of 61. Although most known for his sea ice research, Dr. Barber’s work reached into all realms of Arctic […]
Greenland’s ice is 3 kilometers thick, and runs entirely to its bedrock base, the center of which is below sea level. What is the tipping point of Greenland, where the altitude of the ice sheet is so lowered by surface melt that near-complete loss is unavoidable? This session offers an explanation of this important and […]
News Brief: 11 May 2022 Record-breaking heatwaves and rapid glacier melting triggered a devastating flood last week that wiped out a bridge, damaged homes, and swept away two major power plants in the Hunzu district of Pakistan. Extremely high temperatures over the past month accelerated snow and ice loss from the Shishpar glacier, increasing the […]