{"id":225930,"date":"2025-09-14T10:29:23","date_gmt":"2025-09-14T10:29:23","guid":{"rendered":"https:\/\/www.europesays.com\/us\/225930\/"},"modified":"2025-09-14T10:29:23","modified_gmt":"2025-09-14T10:29:23","slug":"a-30-year-study-reveals-a-hidden-climate-driver-heating-antarcticas-core","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/225930\/","title":{"rendered":"A 30-Year Study Reveals a Hidden Climate Driver Heating Antarctica\u2019s Core"},"content":{"rendered":"

\t\t\"Relay<\/a>Relay Station, an unmanned weather station in the interior of East Antarctica. Unmanned stations are designed to survive Antarctic temperatures below -70\u00b0C and have revealed the main cause of warming in East Antarctica\u2019s interior. Credit: Naoyuki Kurita, Nagoya University<\/p>\n

East Antarctica\u2019s interior is warming at a startling pace, powered by shifting ocean conditions that drive warm air inland. Long overlooked, this icy heart may hold the key to future sea level rise.<\/p>\n

East Antarctica\u2019s Hidden Warming Trend<\/p>\n

Scientists have discovered that the deep interior of East Antarctica is warming more quickly than its coastal regions, and they now know why. A 30-year investigation published in Nature Communications, led by Naoyuki Kurita of Nagoya University, traced the cause to shifts in the Southern Indian Ocean that send more warm air into the continent\u2019s center. East Antarctica, long considered an observational \u201cblind spot,\u201d holds the majority of the planet\u2019s glacial ice. This newly uncovered process suggests that current climate projections may be underestimating how fast Antarctic ice could be lost in the future.<\/p>\n

\"Map<\/a>Professor Naoyuki Kurita at Dome Fuji Station, East Antarctica, where weather instruments collect climate data year-round. Credit: Naoyuki Kurita, Nagoya University
\nCollecting Data in Earth\u2019s Harshest Environment<\/p>\n

Antarctica is the coldest, driest, and windiest place on Earth, storing around 70% of the world\u2019s freshwater in its immense ice sheets. Until now, most climate records from the region came from manned research stations situated along the coast. The continent\u2019s interior has only four staffed bases, and only two of them provide long-term climate data: Amundsen-Scott Station (South Pole) and Vostok Station (East Antarctic Interior). As a result, much of what happens across the interior has remained poorly documented.<\/p>\n

To address this gap, researchers turned to three unmanned weather stations in East Antarctica that have been running since the 1990s: Dome Fuji Station, Relay Station, and Mizuho Station. Using their records, the team created a monthly average temperature dataset spanning 1993 to 2022, providing scientists with the clearest view yet of how the continent\u2019s hidden interior is changing.<\/p>\n

\"Specialized<\/a>A specialized tracked transport vehicle crossing East Antarctica\u2019s ice sheet to reach remote interior research stations. Credit: Naoyuki Kurita, Nagoya University
\nWhy Current Climate Models Fall Short<\/p>\n

Annual average temperature changes showed that all three locations experienced temperature increases at a rate of 0.45-0.72\u00b0C per decade, faster than the global average. The researchers analyzed meteorological and oceanic data and traced this temperature rise to changes in the Southern Indian Ocean that alter atmospheric circulation patterns and transport warm air toward Antarctica\u2019s interior.<\/p>\n

Current climate models do not capture this warming process, so future projections of temperature for Antarctica may be underestimated. \u201cWhile interior regions show rapid warming, coastal stations have not yet experienced statistically significant warming trends,\u201d Professor Naoyuki Kurita from the Institute for Space-Earth Environmental Research<\/a> at Nagoya University said. \u201cHowever, the intensified warm air flow over 30 years suggests that detectable warming and surface melting could reach coastal areas like Syowa Station soon.\u201d<\/p>\n

\"Naoyuki<\/a>Professor Naoyuki Kurita at Dome Fuji Station, East Antarctica, where weather instruments collect climate data year-round. Credit: Naoyuki Kurita, Nagoya University
\nThe Southern Indian Ocean\u2013East Antarctica Link<\/p>\n

Ocean fronts\u2014areas where warm and cold ocean waters meet\u2014create sharp temperature boundaries in the Southern Indian Ocean. Because global warming heats ocean waters unevenly, it intensifies these temperature differences: stronger oceanic fronts lead to more storm activity and atmospheric changes that create a \u201cdipole\u201d pattern, with low pressure systems in mid-latitudes and high pressure over Antarctica. The high-pressure system over Antarctica pulls warm air southward and carries it deep into the continent.<\/p>\n

Now, for the first time, scientists have comprehensive weather station data demonstrating that East Antarctica\u2019s interior is warming faster than its coasts and have identified the major cause of this change. The study provides important insights into how quickly the world\u2019s largest ice reservoir will respond to continued global warming.<\/p>\n

Reference: \u201cSummer warming in the East Antarctic interior triggered by southern Indian Ocean warming\u201d by Naoyuki Kurita, David H. Bromwich, Takao Kameda, Hideaki Motoyama, Naohiko Hirasawa, David E. Mikolajczyk, Linda M. Keller and Matthew A. Lazzara, 22 July 2025, Nature Communications.
DOI: 10.1038\/s41467-025-61919-3<\/a><\/p>\n

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