内蒙古上空的光柱
(原标题: Light Pillars Over Inner Mongolia)
2024-03-04
浏览次数: 11
这个领域发生了什么？这里的照片不是极光，而是附近的光柱，一种通常更近的现象。在地球上的大多数地方，幸运的观测者都能看到太阳柱，这是一种从太阳上延伸出来的光柱，是由平面抖动的冰晶反射来自上层大气的阳光造成的。通常，这些冰晶在到达地面之前就蒸发了。然而，在冰点温度下，平坦飘动的冰晶可能在地面附近形成一种小雪的形式，有时被称为水晶雾。这些冰晶可以像太阳的光柱一样反射地面的光柱。这张特色照片是上个月在中国内蒙古乌兰布通草原拍摄的。
查看原文解释
What's happening across that field? Pictured here are not auroras but nearby light pillars, a phenomenon typically much closer. In most places on Earth, a lucky viewer can see a Sun pillar, a column of light appearing to extend up from the Sun caused by flat fluttering ice-crystals reflecting sunlight from the upper atmosphere. Usually, these ice crystals evaporate before reaching the ground. During freezing temperatures, however, flat fluttering ice crystals may form near the ground in a form of light snow sometimes known as a crystal fog. These ice crystals may then reflect ground lights in columns not unlike a Sun pillar. The featured image was taken last month across the Wulan Butong Grasslands in Inner Mongolia, China.
© N. D. Liao