How Antarctica warmed by 28°C in the depths of winter – and what it signals for the decades ahead

The Conversation · Apr 24, 2026 · 603 words · By Haosu Tang

The article details a significant and unusual heatwave that occurred in East Antarctica during the winter of 2024, with temperatures rising by up to 28°C above average. The analysis attributes this event to a combination of natural variability and human-caused climate change, warning that such extreme warming events are becoming more frequent and have global consequences, particularly for sea levels.

open_in_new Read the original article: https://theconversation.com/how-antarctica-warmed-by-28-c-in-the-depths-of-winte…

analyticsAnalysis

30%

Propaganda Score

confidence: 95%

Minor concerns. Some persuasive language detected, but largely factual.

psychologyDetected Techniques

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Loaded Language 80% confidence

Using words with strong emotional connotations to influence an audience.

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Appeal to Fear 70% confidence

Building support by instilling anxiety or panic in the audience.

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Glittering Generalities 60% confidence

Using vague, emotionally appealing phrases ('freedom', 'justice') without specifics.

fact_checkFact-Check Results

11 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 6

info Single Source 2

help Insufficient Evidence 2

schedule Pending 1

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“In the middle of the Antarctic winter, during months of darkness when temperatures often dip below −30°C, the continent warmed dramatically.”

SINGLE SOURCE

The web search results confirm that Antarctica is generally very cold during winter, but none of the provided evidence directly corroborates the claim that the continent 'warmed dramatically' during the Antarctic winter months using multiple independent sources. The evidence is general background information.

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web search NEUTRAL — Surface temperature of Antarctica in winter and summer from the European Centre for Medium-Range Weather Forecasts. The climate of Antarctica is the coldest on Earth. The continent is also extremely d…
https://en.wikipedia.org/wiki/Climate_of_Antarctica

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web search NEUTRAL — The Antarctic Peninsula has experienced the most dramatic warming, with temperatures rising by 3°C since the mid-20th century. This represents one of the fastest warming rates anywhere on Earth, contr…
https://solartechonline.com/blog/climate-change-antarctica-c…

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web search NEUTRAL — The Antarctic winter runs from March to October. During this period, the continent and the atmosphere above it are dark and very cold, as the sun doesn’t rise until September. The polar vortex traps i…
https://theconversation.com/air-temperatures-over-antarctica…

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“In July and August 2024, temperatures in parts of East Antarctica rose by up to 28°C above average and stayed high for more than two weeks.”

CORROBORATED

Two separate web search results explicitly state that temperatures in parts of East Antarctica rose by up to 28°C above average and stayed high for more than two weeks in July and August 2024. This is corroborated by the general reporting on the 2024 heatwave.

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wikipedia NEUTRAL — Dome A or Dome Argus is the highest ice dome on the Antarctic Plateau, located 1,200 km (750 mi) inland. It is thought to be the coldest naturally occurring place on Earth, with temperatures believed …
https://en.wikipedia.org/wiki/Dome_A

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wikipedia NEUTRAL — Lake Vostok (Russian: озеро Восток, romanized: ozero Vostok) is the largest of Antarctica's 675 known subglacial lakes and the 16th largest lake in the world by area. Lake Vostok is located at the sou…
https://en.wikipedia.org/wiki/Lake_Vostok

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wikipedia NEUTRAL — Vostok Station (Russian: станция Восток, romanized: stantsiya Vostok, IPA: [ˈstant͡sɨjə vɐˈstok], lit. 'station east') is a Russian research station in inland Princess Elizabeth Land, Antarctica. Foun…
https://en.wikipedia.org/wiki/Vostok_Station

+ 3 more evidence sources

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“It was a rare atmospheric disturbance, amplified by human-caused climate change, offering a glimpse of what could become more common in the decades ahead.”

CORROBORATED

Multiple web search results characterize the event as a rare atmospheric disturbance linked to climate change. One source explicitly states it was 'amplified by human-caused climate change,' and another notes that such heat waves 'should be quite rare in Antarctica.'

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wikipedia NEUTRAL — The Antarctic (; US also , commonly ) is the polar region of Earth that surrounds the South Pole, lying within the Antarctic Circle. It is diametrically opposite of the Arctic region around the North …
https://en.wikipedia.org/wiki/Antarctic

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wikipedia NEUTRAL — The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martin in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is t…
https://en.wikipedia.org/wiki/Antarctic_Peninsula

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wikipedia NEUTRAL — The British Antarctic Territory (BAT) is a sector of Antarctica claimed by the United Kingdom as one of its 14 British Overseas Territories, of which it is by far the largest by area. It comprises the…
https://en.wikipedia.org/wiki/British_Antarctic_Territory

+ 3 more evidence sources

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“This was not an isolated event. It followed a heatwave in March 2022, when temperatures in some Antarctic areas soared by nearly 40°C above average – one of the largest temperature anomalies ever recorded anywhere on the planet.”

CORROBORATED

Two distinct web search results confirm that the 2024 heatwave followed a significant heatwave in March 2022, with one source citing temperatures soaring by nearly 40°C above average in that period.

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wikipedia NEUTRAL — The French Southern and Antarctic Lands (French: Terres australes et antarctiques françaises, TAAF) is an overseas territory (French: Territoire d'outre-mer or TOM) of France. It consists of: Adélie …
https://en.wikipedia.org/wiki/French_Southern_and_Antarctic_…

+ 3 more evidence sources

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“In 2024, the extraordinary winter heat began with a weakening of the Antarctic polar vortex – a band of strong winds high in the atmosphere that usually keeps cold air locked over the continent.”

SINGLE SOURCE

The web search results mention the weakening of the polar vortex as a precursor to the heatwave, but this specific claim is only detailed in the context of the provided search snippets and is not independently corroborated by multiple sources in the evidence set.

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wikipedia NEUTRAL — The Antarctic Circle is the most southerly of the five major circles of latitude that mark maps of Earth. The region south of this circle is known as the Antarctic, and the zone immediately to the nor…
https://en.wikipedia.org/wiki/Antarctic_Circle

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wikipedia NEUTRAL — The United States Antarctic Program (or USAP; formerly known as the United States Antarctic Research Program or USARP and the United States Antarctic Service or USAS) is an organization of the United …
https://en.wikipedia.org/wiki/United_States_Antarctic_Progra…

+ 3 more evidence sources

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“In July 2024, this vortex became distorted, allowing unusual warming in the stratosphere, where temperatures rose by more than 15°C in early July, with another surge in early August.”

CORROBORATED

Two web search results discuss the distortion of the polar vortex in July 2024. One mentions the stratospheric vortex being distorted, and another discusses the general distortion of the polar vortex, supporting the sequence of events described.

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wikipedia NEUTRAL — July 3 is the 184th day of the year (185th in leap years) in the Gregorian calendar; 181 days remain until the end of the year.
https://en.wikipedia.org/wiki/July_3

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wikipedia NEUTRAL — July 4 is the 185th day of the year (186th in leap years) in the Gregorian calendar; 180 days remain until the end of the year.
https://en.wikipedia.org/wiki/July_4

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wikipedia NEUTRAL — July 8 is the 189th day of the year (190th in leap years) in the Gregorian calendar; 176 days remain until the end of the year.
https://en.wikipedia.org/wiki/July_8

+ 3 more evidence sources

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“A persistent high-pressure system developed over East Antarctica, opening a pathway for a long, narrow plume of warm, moisture-rich air – known as an atmospheric river – to move deep into the continent.”

CORROBORATED

Two web search results describe the development of a high-pressure system over East Antarctica that allowed warm, moisture-rich air (atmospheric river) to move deep into the continent.

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web search NEUTRAL — East Antarctica is colder than its western counterpart because of its higher elevation. Weather fronts rarely penetrate far into the continent, leaving the centre cold and dry, with moderate wind spee…
https://en.wikipedia.org/wiki/Antarctica

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web search NEUTRAL — A persistent high-pressure system developed over East Antarctica, opening a pathway for a long, narrow plume of warm, moisture-rich air – known as an atmospheric river – to move deep into the continen…
https://theconversation.com/how-antarctica-warmed-by-28-c-in…

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web search NEUTRAL — The high-pressure system over Antarctica pulls warm air southward and carries it deep into the continent. Now, for the first time, scientists have comprehensive weather station data demonstrating that…
https://scitechdaily.com/a-30-year-study-reveals-a-hidden-cl…

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“At the same time, Antarctic sea ice was near record lows and the surrounding Southern Ocean was unusually warm, likely linked to the same large-scale atmospheric conditions and helping to sustain the flow of heat into the continent.”

CORROBORATED

Two web search results confirm that during the heatwave, Antarctic sea ice was at record lows and the Southern Ocean was unusually warm, and that these factors were linked to the large-scale atmospheric conditions.

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web search NEUTRAL — At the same time, Antarctic sea ice was near record lows and the surrounding Southern Ocean was unusually warm, likely linked to the same large-scale atmospheric conditions and helping to sustain the …
https://theconversation.com/how-antarctica-warmed-by-28-c-in…

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web search NEUTRAL — Antarctic sea ice shrinks to lowest annual maximum level on record, data shows. 26 Sept 2023. Australian government backflips on cancellation of Antarctica penguin surveys.
https://www.theguardian.com/world/article/2024/aug/01/antarc…

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web search NEUTRAL — The heat wave further reduced the extent of sea ice, which was already at record lows. This loss of sea ice was exacerbated this year resulting in the lowest summer and winter sea ice ever recorded. I…
https://phys.org/news/2024-01-antarctica-totally-blew-minds-…

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“Our analysis, using computer simulations to compare today’s climate with a world without human influence, shows climate change made the 2024 winter heatwave both stronger and more likely.”

INSUFFICIENT EVIDENCE

No evidence was provided in the gathered results for this claim, and no web search results were returned to support it.

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“Such extreme weather would have been exceptionally rare in the past, but today it is already significantly more likely – and could become up to 20 times more frequent by the end of the century under high emissions.”

INSUFFICIENT EVIDENCE

No evidence was provided in the gathered results for this claim, and no web search results were returned to support it.

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“When these ice shelves weaken, glaciers can accelerate into the ocean, contributing to sea level rise that affects coastlines worldwide.”

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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.

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How Antarctica warmed by 28°C in the depths of winter – and what it signals for the decades ahead

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