1.2025年南极夏季海冰面积达到47年卫星记录中第二低的最小范围，与历史最低值持平。
2.截至2025年3月1日，南极海冰已退缩至198万平方公里，比1981-2010年的平均值低30%。
3.与此同时，北极海冰覆盖范围正接近卫星观测史上最低的冬季水平。
4.由于此，地球缺失的海冰面积足以覆盖美国密西西比河以东的整个大陆区域。
5.然而，市场因素众多，天气仅是众多因素中的一个，期货市场风险较大，入市需谨慎。
以上内容由腾讯混元大模型生成，仅供参考
in 2025, summer sea ice in the Antarctic tied for the second-lowest minimum extent ever recorded in the 47-year satellite record, according to NASA and the National Snow and Ice Data Center (NSIDC).
根据美国国家航空航天局（NASA）和美国国家冰雪数据中心（NSIDC）的数据，2025年南极夏季海冰面积达到了47年卫星记录中第二低的最小范围，与历史最低值持平。
The map above shows the ice extent at its annual low on March 1, 2025. By this date, sea ice had retreated to 1.98 million square kilometers (764,000 square miles). That’s 30 percent below the 1981-2010 average of 2.84 million square kilometers (1.10 million square miles).
上图展示了2025年3月1日南极海冰范围达到年度最低值的状态。截至该日，海冰已退缩至198万平方公里（76.4万平方英里），这比1981-2010年的平均值284万平方公里（110万平方英里）低30%。
Sea ice extent is defined as the total area in which the ice concentration is at least 15 percent. The map’s yellow outline indicates the 1981-2010 median extent for February. A median is the middle value: That is, half of the extents were larger than the yellow line and half were smaller.
海冰范围的定义是冰密集度至少为15%的海域总面积。地图上的黄色轮廓线表示1981-2010年2月南极海冰范围的中值范围。中值即中间值：即有一半年份的海冰范围大于黄线，另一半年份小于黄线。
“It’s not yet clear whether the Southern Hemisphere has entered a new norm with perennially low ice or if the Antarctic is in a passing phase that will revert to prior levels in the years to come,” said Walt Meier, an ice scientist with NSIDC.
美国国家冰雪数据中心（NSIDC）的冰科学家沃尔特·迈耶（Walt Meier）表示：“目前尚不清楚南半球是否已进入海冰持续低位的新常态，或者南极正处于一个过渡阶段，未来几年可能恢复到之前的水平。
For their analysis, scientists primarily rely on satellites in the Defense Meteorological Satellite Program (DMSP), which measure Earth’s radiation in the microwave range. This natural radiation is different for open water and for sea ice—with ice cover standing out brightly in microwave-based satellite images. Microwave scanners can also penetrate cloud cover, allowing for daily global observations. The DMSP data are augmented with historical sources, including data collected between 1978 and 1985 with the Nimbus-7 satellite that was jointly operated by NASA and the National Oceanic and Atmospheric Administration.
科学家在分析中主要依赖国防气象卫星计划（DMSP）的卫星数据，这些卫星通过测量地球在微波波段的辐射来监测海冰变化。微波辐射在开放水域和海冰覆盖区域呈现显著差异——冰层在基于微波的卫星图像中会显得格外明亮。这一特性使微波扫描仪能够穿透云层干扰，实现全球范围的每日连续观测。DMSP的观测数据还通过历史档案得到补充，包括1978-1985年间由NASA与国家海洋和大气管理局（NOAA）联合运营的Nimbus-7卫星收集的早期记录。
As sea ice in the Antarctic reached its summer low, sea ice across the Arctic was approaching the lowest winter extent ever observed in the satellite record. Globally, ice coverage in mid-February of this year declined by more than 2.5 million square kilometers (1 million square miles) from the average before 2010. Altogether, Earth is missing an area of sea ice large enough to cover the entire continental United States east of the Mississippi.
当南极海冰达到夏季最小值时，北极海冰覆盖范围也正接近卫星观测史上最低的冬季水平。今年2月中旬，全球海冰覆盖面积比2010年之前的平均水平减少了约250万平方公里（100万平方英里）。这意味着地球缺失的海冰面积足以覆盖美国密西西比河以东的整个大陆区域。
温馨提示：盘面影响因素较多（宏观、供需、情绪、产业套保套利、量化等），天气仅是众多因素中的一个，切勿据此买卖。期货市场风险较大，入市务必谨慎。