Ice core analysis reveals cooling period 6 M years ago. Scientists have extracted ice cores from Antarctica dating back 6 million years, which represents the oldest ice cores directly dated, according to a study in the Proceedings of the National Academy of Sciences. Analysis of water and air from the ice reveals a significant cooling period […]
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Expedition Location: Kluane Lake, Yukon, CanadaExpedition Dates: June 2-10, 2025Field Team Members: Dominic Winski*, Sicily Sohn, Inga Kindstedt (report author)Funding Support: Sturgis Exploration Fund Introduction: The Gulf of Alaska (GoA) region, which includes Alaska, the Yukon and parts of British Columbia, contains over 40 mm of sea level rise in its many alpine glaciers and […]
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The institute will have an interim director until June 2027. Paul Mayewski (left) stepped down as the director of the Climate Change Institute at the University of Maine this fall. Dan Sandweiss (right) will lead the institute as interim director for the next few years. Amid a tumultuous time for climate change research, Paul Mayewski […]
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Expedition Dates: July 27th, 2025 – August 8th, 2025 Field Team Members: Kayla Guthrie, Miranda Seixas, Dr. Jasmine Saros, Dr. Jacob Yde, Dr. Torgeir Røthe, Dr. Sigurd Nerhus, and Misa Saros Funding Support: The Robert and Judith Sturgis Family Foundation Research Background: Acid deposition has had significant impacts in Norway, leaving forests, lakes, and rivers […]
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https://pastglobalchanges.org/publications/pages-magazines/pages-magazine/138632 We developed a novel hyperspectral line-scan imaging system for ice cores. The system nondestructively captures light-scattering features via dark-field illumination. Its calibrated visible and near-infrared spectral data enhance analysis and archiving, advancing research on stratigraphic impurities, ice dynamics and paleoclimate.https://doi.org/10.22498/pages.33.2.50 “IceSpec: An Ice-Core Hyperspectral Imaging Framework.” 2025. Past Global Changes Magazine 33 (2): 50–51. […]
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www.pnas.org/doi/10.1073/pnas.2502681122 with DOI number 10.1073/pnas.2502681122 Paper reports the discovery of ice, that is up to 6 million years old. Isotopic temperatures from this ice indicate progressive cooling over the Pliocene; enigmatic basal ice from the Miocene is characterized by even warmer temperatures and may reflect a relic from the adolescent days of the Antarctic ice […]
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Expedition Location: Juneau Icefield, Juneau, Alaska Expedition Dates: Jun 29, 2025 to July 19, 2025 Field Team Members: Wyatt Stanley, Scott Braddock, Mathilde Børch, and Seth Campbell Funding Support: Dan and Betty Churchill Exploration Foundation, NSF CAREER grant (PI Campbell), and the University of Maine Graduate Student Government Background and Significance: Glaciers worldwide are melting […]
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Expedition Location: Qalerallit Imaat and Sermilik Fjord, South Greenland Expedition Dates: Jun 11 to 16, 2025 Field Team Members: Mathilde Børch, Kristin Schild, Lee Karp-Boss, Allie Berry, Kayla Guthrie, Miranda Seixas, Wyatt Stanley, and Seth Campbell Funding Support: The Robert and Judith Sturgis Family Foundation, and NSF SAUNNA NRT Background and Significance: Today, glaciers worldwide […]
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Expedition Location: Sogndal, Norway Expedition Dates: July 27, 2025 – August 8, 2025 Field Team Members: Miranda Seixas*, Kayla Guthrie, Misa Saros, Jacob Yde, Jasmine Saros Funding Support: The Robert and Judith Sturgis Family Foundation Exploration Fund Introduction: The cryosphere is anywhere on Earth where water is frozen, including ice sheets, ice caps, mountain glaciers, […]
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Jefferson Cardia SIMÕES has been elected a fellow of the World Academy of Sciences/TWAS [TWAS UNESCO (https://twas.org/)]. The nominee has made significant contributions to the science of ice cores and is one of the most distinguished Latin-American glaciologists. His achievements include reconstructing acid pollution in Svalbard ice cores and detecting arsenic and uranium pollution in […]
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