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Warmer water is flowing toward the East Antarctic ice sheet, according to our alarming new research that reveals new potential drivers of global sea level rise. Author Laura Herraiz Borreguero Physical oceanographer, CSIRO Alberto Naveira Garabato Professor, National Center for Oceanography, University of Southampton Jess Melbourne-Thomas Transdisciplinary Researcher & Knowledge Broker, CSIRO The research, published today in Nature Climate Change, suggests changes in water circulation in the Southern Ocean could jeopardize the stability of the East Antarctic ice sheet. The ice sheet, the size of the United States, is the largest in the world. Changes in water circulation are caused by shifting wind patterns, and are linked to factors including climate change. Warmer waters and rising sea levels can damage marine life and threaten human coastal settlements. Our findings underscore the urgency of limiting global warming to below 1.5℃, to prevent the most catastrophic

Evolution in casting a longer shadow than previously thought, scientists report in a new paper published the week of Aug. Proceedings of the National Academy of Sciences . Smithsonian scientists and colleagues looked at eelgrass communities—the basis of many coastal marine food webs along the north Atlantic and Pacific coasts—and found that their ancient genetic history can play a more powerful role than the current environment in determining their size, structure, and who they are. live in it. And this could have implications for how well eelgrass adapts to threats like climate change. About half a million years ago, when the world was warmer, some eelgrass plants made the arduous journey from their homes in the Pacific to the Atlantic. Not all plants are hardy enough to travel across the North Pole. For those who succeeded, a series of ice ages during the Pleistocene Epoch further influenced how far they could spread. That millennial struggle left a lasting imprint in their DNA

The researchers described direct observations of the particle size of ice nucleation in the middle Arctic throughout the cycle of sea ice development and decline. According to their findings, these particles have distinct seasons, with lower concentrations in winter and spring and higher concentrations during summer melting local flora. The clouds that cover the Earth’s surface and the tiny aerosols in the air known as ice core particles that initiate the formation of ice in these clouds are important contributors to climate change. Climate is strongly influenced by this interaction of heat, cloud cover and ice nucleation. Earth is heating up faster (Photo: Alberto Restifo/Unsplash) But those important ice-forming aerosols, which can be mineral dust, microorganisms, or ocean spray, are almost never investigated in the Arctic, where they are most needed because their effects are little understood, and few scientists have traveled that far north, as per ScienceDaily. However, scientists

Alarming stories from Antarctica are happening more often than ever before; surface ice is melting, floating ice sheets are collapsing and glaciers are flowing faster into the ocean. Antarctica will be the biggest source of future sea level rise. But scientists don’t know exactly how this melting will happen as the climate warms. Our latest research looks at how the Antarctic ice sheet has advanced and retreated over the last 10,000 years. It holds strong warnings, and perhaps some hope, for the future. Current imbalance Future sea level rise presents one of the most significant challenges of climate change, with the expected economic, environmental and social impacts on coastal communities around the world. Although it may seem like a distant problem, change in Antarctica will soon be felt at our doorstep, in the form of rising sea levels. Antarctica is home to the single largest ice mass in the world: the Antarctic ice sheet. This glacier’s ice body is several kilometers thick, l

Glaciers in tropical mountains are experiencing the same impact of climate change drivers as those in the polar regions of Antarctica and the Northern Hemisphere, according to a study published today in Nature. The paper by an international team of scientists, including Robert Hatfield, assistant professor in the University of Florida’s Department of Geological Sciences, is the first to show that the effects of greenhouse gases and other drivers of Earth’s temperature are impacting glaciers in the South. Hemisphere at the same speed as the northern ice sheet. To derive their findings, the researchers used sediment deposits from Lake Junín, high in the Peruvian Andes, to create a record of glacial changes that stretch back 700,000 years. Hatfield explains that much of what scientists know about past glacial changes comes from records of ice growth and decay occurring in the Northern Hemisphere. “As we try to understand how climate works around the world, we need more than a record of