Shaw Joseph A
Appl Opt. 2017 Jul 1;56(19):G113-G119. doi: 10.1364/AO.56.00G113.
On the morning of 5 November 2013, a bright subsun was consistently visible during a flight from Bozeman, Montana, to Salt Lake City, Utah. Just after passing over the Wasatch Mountains and beginning to descend into the Salt Lake Valley, the subsun expanded to a rare display of Bottlinger's rings-an elliptical halo surrounding the subsun. The rings remained visible for 1 to 2 min. This paper shows photographs of the sequence, along with meteorological data from a nearby radiosonde. The display occurred in virga below clouds at an air temperature in the approximate range from -8°C to -12°C, in air saturated with respect to ice, at an altitude of approximately 2600-3600 m above mean sea level.
2013年11月5日上午，从蒙大拿州博兹曼飞往犹他州盐湖城的航班途中，一直能看到明亮的幻日。刚飞过沃萨奇山脉并开始下降进入盐湖谷时，幻日扩展成了罕见的博特林格环——围绕幻日的椭圆形光晕。这些环持续可见了1至2分钟。本文展示了该过程的照片，以及附近探空气球的气象数据。这种现象出现在云层下方的雨幡中，气温大约在-8°C至-12°C之间，空气相对于冰呈饱和状态，海拔约为平均海平面以上2600 - 3600米。
