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Antarctic ice sheet loss temporarily slows due to remote influence of tropical warm pool: Chinese, foreign scientists_我的网站

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8月5日，位于临西县“国际轴之城”产业园的塞艾斯（临西县）轴承有限公司，工人在智能生产线工作。临西县深耕轴承产业半个多世纪积淀了深厚的制造底蕴和完整的产业体系如今已形成“龙头引领、中小配套、分工明晰”的产业共生格局在人形机器人专用轴承材料精密制造、跨境研发等方面取得实质性突破带动整个产业向高端配套转型

8月5日拍摄的临西县“国际轴之城”产业园。    

    Adelie penguins (Pygoscelis adeliae) on fast ice with tourists walking in the background, Bourgeois Fjord, Marguerite Bay, Antarctica. Photo: VCG
Joint research by Chinese and international scientists have found that the rate of long-term Antarctic mass loss has slowed, driven by sea surface temperature anomalies in the remote tropical warm pool, China Central Television (CCTV) reported on Thursday, citing a statement released by the Institute of Oceanology, Chinese Academy of Sciences (CAS). 
The Antarctic ice sheet is one of the major sources of uncertainty in global sea-level rise forecasts. From 2003 to 2024, the Antarctic ice sheet lost an average of approximately 140.5 billion tons each year, CCTV reported. 
However, Chinese and foreign scientists have found that the Antarctic ice sheet gained roughly 695 billion tons between July 2021 and April 2023, the largest 22-month mass gain seen in nearly two decades via satellite gravimetry, the Institute of Oceanology, CAS announced on Thursday.
The scientists found out that from 2021 to 2023, sustained heavy snowfall in East Antarctica led to significant increases in snow accumulation, partially offsetting the ongoing ice loss in West Antarctica. 
The scientists' research shows that this was caused by tropical ocean-driven atmospheric processes that altered moisture transport pathways and increased snowfall over Antarctica. 
The research was conducted by the research team at the Institute of Oceanology at CAS, along with peers from countries including the US, Hungary and Japan. It was published in the academic journal Nature on Wednesday. 
According to Wang Yunhe, first author of the research paper and an associate research fellow at the Institute of Oceanology, sea surface temperatures in the tropical western Pacific warm pool remained unusually warm from 2021 to 2023. As one of the regions with the highest sea surface temperatures and strongest heat release into the atmosphere worldwide, changes in this region can reshape atmospheric circulation. 
The persistently warmer-than-normal seawater triggered large-scale atmospheric waves. 
After reaching the high latitudes of the Southern Hemisphere, the waves reshaped wind patterns and moisture transport pathways. Moisture-tracking simulations show that water vapor from the mid-latitude Indian Ocean fueled heavy snowfall in East Antarctica, leading to a recovery in ice sheet mass. 
Observations and climate simulations suggest that such warming events occur roughly once a decade. But these temporary pauses are not enough to reverse Antarctica's long-term ice loss. The West Antarctic ice sheet continues to shrink, while parts of East Antarctica remain increasingly vulnerable to warmer ocean waters melting ice shelves from below and speeding the flow of glaciers into the sea.
The study shows how persistent warming in the tropical warm pool can contribute to the recovery of Antarctic ice-sheet mass, highlighting the role of East Antarctic atmospheric circulation in connecting tropical climate shifts with changes in the ice sheet. The findings point to a previously overlooked climate link between the tropical warm pool and East Antarctica, offering a new perspective on how distant climate systems may shape the continent's future.
Global Times
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8月5日，位于临西县“国际轴之城”产业园的塞艾斯（临西县）轴承有限公司，机械手在智能生产线工作。

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8月5日，位于临西县“国际轴之城”产业园的塞艾斯（临西县）轴承有限公司，工人在智能生产线工作。

8月5日，位于临西县“国际轴之城”产业园的塞艾斯（临西县）轴承有限公司，工人在智能生产线巡检。摄影报道丨日报记者赵永辉。

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