稀有北极光现身瑞士夜空 多地居民与气象摄像头记录到绚烂光影
10月10日夜晚至11日凌晨，一场罕见的北极光（极光）出现在瑞士多地上空，绿色与紫色的光影在夜空中舞动，不少居民拍下照片分享。瑞士气象局（MeteoSwiss）的多台网络摄像头也记录到了这一景象——在瑞士这样的中纬度地区，肉眼可见的极光并不常见。
气象学家丹尼尔·格斯特格拉瑟（Daniel Gerstgrasser）在社交平台 X 上发帖介绍此次极光的观测情况。极光由太阳活动增强引起：太阳风与日冕物质抛射带来的高能带电粒子与地球高层大气碰撞发光。当太阳活动足够强烈时，极光的可见范围会从极圈向中低纬度大幅扩展。
近两年正值太阳活动周期高峰，欧洲中部地区已多次出现极光观测记录。瑞士境内的阿尔卑斯山区因海拔高、光污染少，成为观测者青睐的地点。
据气象部门介绍，未来数月太阳活动仍将维持在高位，晴朗无月的夜晚仍可能出现类似景象。10月11日为周日，瑞士当日亦无全国性政治议程，本条为当日瑞士主流新闻机构刊发的本地新闻。
来源：Keystone-SDA、The Geneva Times 相关报道（10月11日）。
Rare Northern Lights Dazzle Swiss Skies as Cameras Capture the Display
On the night of 10–11 October, a rare display of the northern lights appeared over large parts of Switzerland, with curtains of green and purple dancing across the sky and residents sharing photographs of the spectacle. Several MeteoSwiss webcams also captured the phenomenon — visible auroras are uncommon at Switzerland's mid-latitudes.
Meteorologist Daniel Gerstgrasser posted about the sightings on X. Auroras are caused by heightened solar activity: charged particles from the solar wind and coronal mass ejections collide with gases in Earth's upper atmosphere and glow. When solar activity is strong enough, the aurora's visible zone expands far south of the polar regions.
With the Sun near the peak of its activity cycle, central Europe has recorded multiple aurora sightings over the past two years. The Swiss Alps, with their altitude and low light pollution, are favoured observation spots.
Meteorologists say solar activity will remain high in the coming months, so similar displays remain possible on clear, moonless nights. 11 October was a Sunday with no nationwide political agenda in Switzerland; this item was among the Swiss stories published by national news outlets that day.
Sources: Keystone-SDA and The Geneva Times reporting (11 October).
图片来源：北极光（资料图，摄于瑞典阿比斯库上空），Andrea Ullius from Chur, Schweiz 摄，CC BY 2.0（Wikimedia Commons）
