Antarctica Sees Record Heatwave as Winter Begins

Antarctica experienced record-breaking temperatures at the onset of the austral winter in early June, with some regions registering up to 20 degrees Celsius above seasonal averages. These unusual conditions led to atypical ice melt and rainfall across the continent.

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record-breaking temperatures, up to 20 degrees above seasonal norms at the start of the austral winter, with atypical ice melt and rains.

The Esperanza base, an Argentine scientific outpost on the northern tip of the Antarctic Peninsula, recorded a local June record of 15.4°C between June 5 and 6. This figure dramatically surpasses the historical average maximum for June at Esperanza, which stands at -6.2°C. The previous June record was 13.3°C, set in 1998. At the Marambio base, another Argentine station, temperatures reached 11.8°C, far exceeding its June average of -10.7°C.

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climate change is influencing, but the specificities of the Antarctic climate and its large temperature variations require more data for an accurate picture.

Scientists consulted by AFP indicated that climate change is likely contributing to these extreme temperatures. However, they also cautioned that the Antarctic region is known for significant temperature fluctuations. Therefore, more extensive, long-term data collection is necessary to fully understand the precise impact of climate change and to distinguish it from natural climatic variations.

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the Antarctic Peninsula recorded temperatures up to 20°C above normal.

Raul Cordero, a climatologist at the University of Groningen, noted that daily maximum temperatures at Esperanza remained above 0°C for 21 consecutive days, resulting in large snow-free areas in the northernmost parts of the continent. He warned that such events are likely to become more frequent if global warming is not curbed. Thomas Caton Harrison, a polar climatologist at the British Antarctic Survey, agreed that evidence points to climate change influence but stressed the complexity of the phenomenon in this specific region, requiring comprehensive, multi-year data analysis.

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the event is not isolated, but confirms a trend, and unless climate warming is stopped, this type of event will continue to occur with increasing frequency.