记者从中国气象局获悉，风云三号D星最新传回的真彩色图像显示，曾经的世界最大冰山A23a主体面积仅余503平方公里，不足其最初规模的八分之一。 而就在几周前，该冰山主体尚有948平方公里。从1986年脱离南极冰架时的4170平方公里到如今，A23a用近四十年的历程，几乎走完了一座冰山从诞生到衰 亡的主要生命旅程。 水劈作用是导致冰山结构迅速崩解的关键 国家卫星气象中心国际用户服务中心首席专家 郑照军：融水不断积聚，在边缘处产生巨大压力，在冰体上压出新的裂缝。融水随即沿裂缝下渗、冲刷，甚 至从冰壁倾泻而下。这样的持续冲刷拓宽了裂缝，犹如楔子不断劈开冰体，这是导致冰山结构迅速崩解的关键。同时，3~4摄氏度的水温随洋流冲刷冰山底 部，促使其变薄，加速了不稳定性。 冰山主体与三座主要子冰山已完全分离 距离南乔治亚岛以西约250公里，南纬52.75°、西经41.34°的寒冷海域，一场持续近四十年的冰山演变历程，正在这里迎来尾声。中国气象局国家卫星气象中 心的专家们，依托我国"风云三号"卫星的中分辨率光谱成像仪，对A23a冰山2023年以来的漂移路径及2025年至今的崩解过程进行了持续追踪。 48 51 ° S 52° S ...

Core Viewpoint - The article highlights the ongoing efforts and advancements in meteorological forecasting, emphasizing the dedication of meteorologists to improve accuracy and provide timely weather predictions despite challenges posed by extreme weather and climate change [1][2]. Group 1: Meteorological Advancements - Meteorologists are developing numerical forecasting models to extend prediction accuracy from hourly to minute-level forecasts [1] - The integration of land, sea, air, and space observation systems has led to the creation of smart meteorological service platforms that deliver precise forecasting and warning information [1] - The National Climate Center's chief forecaster, Gao Hui, emphasizes that while 100% accuracy is unattainable, the team is committed to putting in 100% effort to improve forecasts [2] Group 2: Personal Stories of Meteorologists - Gao Hui's motivation to pursue long-term weather forecasting stemmed from experiencing a severe flood in 1998, which highlighted the need for better predictive capabilities [2][3] - Since joining the National Climate Center in 2004, Gao Hui has progressed through various roles, ultimately becoming the chief forecaster, where he has faced significant pressure during critical weather events [3] - The article also features the story of Qi Chengli, a senior engineer at the National Satellite Meteorological Center, who has been instrumental in the development of advanced meteorological satellites, enhancing observational capabilities [5][6][7] Group 3: Technological Innovations - The launch of the Fengyun-3A satellite in 2008 marked a significant advancement in China's meteorological capabilities, providing higher precision and stronger observational abilities [8] - The article discusses the establishment of the Xiong'an Meteorological Artificial Intelligence Innovation Research Institute, which aims to integrate AI into weather forecasting models, enhancing predictive accuracy [9][10] - The "Fengqing" AI model, developed in collaboration with Tsinghua University, is set to provide global weather forecasts with high resolution and frequent updates, showcasing the potential of AI in meteorology [9][10]