Parry arc
![A halo display photo documented by Cindy McFee, NOAA, December 1980 at the South Pole Station. Several distinct halo phenomena are featured in the photo: Two sun dogs (bright spots), a parhelic circle (horizontal line), a 22° halo (circle), and an upper tangent arc and a Parry arc (top).](/Images/godic/202502/01/HALO-S_south_pole3006.jpg")
![Complex Moon halo. Visible are: halo, Parry arc, upper tangent arc and Moon dogs.](/Images/godic/202502/01/Complex_Moon_halo3006.jpg")
![Upper tangent arc and sunvex Parry arc seen over Santa Rosa Beach, Florida, on November 24, 2015.](/Images/godic/202502/01/Sunvexparryflorida3006.png")
A Parry arc is a rare halo, an optical phenomenon which occasionally appears over a 22° halo together with an upper tangent arc.
Parry arc
英语百科
| 单词 | Parry arc |
| 释义 |
Parry arc
英语百科
Parry arcA Parry arc is a rare halo, an optical phenomenon which occasionally appears over a 22° halo together with an upper tangent arc. |
| 随便看 |
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