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明日出征！神十八航天员乘组确定！_我的网站

A |     据新华社消息，执行神舟十八号载人飞行任务的航天员乘组由叶光富、李聪、李广苏3名航天员组成，叶光富担任指令长。    

    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
。乘组包括1名第二批航天员和2名第三批航天员，3人均为“80后”。▲神舟十八号航天员乘组合影▲指令长 叶光富▲航天员 李聪▲航天员 李广苏　　今天是第九个“中国航天日”，54年前的今天，中国第一颗人造地球卫星——“东方红一号”在酒泉卫星发射中心发射成功。上午11时，3名航天员在这块中国航天事业和“两弹一星”精神的重要发祥地与中外媒体记者集体见面。　　神舟十八号明日出征　　据新华社消息，经空间站应用与发展阶段飞行任务总指挥部研究决定，我国瞄准4月25日20时59分发射神舟十八号载人飞船。　　在轨驻留期间，神舟十八号航天员乘组将迎来天舟八号货运飞船和神舟十九号载人飞船的来访，计划于今年10月下旬返回东风着陆场。　　神舟十七号航天员乘组将于4月30日返回东风着陆场。　　我国第四批航天员选拔即将完成　　据新华社快讯：我国第四批航天员选拔即将完成。他们入队后将和现役航天员一起，实施空间站后续任务，并实现中国人登陆月球。　　中国载人航天工程新闻发言人、中国载人航天工程办公室副主任林西强表示，将抓紧研究推动国外航天员以及太空游客参与空间站飞行。　　（中国小康网微信公众号综合新华社、中国载人航天微信公众号）　　图源：中国载人航天微信公众号　　编辑：田苑淯颖　　审核：王芳。

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Published on:19:03:43