- subsun
- 日下晕
Atmospheric Sciences (English-Chinese) dictionary. 2014.
subsun
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Subsun — A subsun or sub sun is a glowing spot seen within clouds when the clouds are observed from above. The subsun appears directly below the sun, as if it were caused by sunlight reflecting from a body of water. The reflection is caused by large… … Wikipedia
Subparhelic circle — The subparhelic circle is a rare halo, an optical phenomenon located below the horizon. It passes through both the subsun, below the sun, and the antisolar point, opposite to the sun. The subparhelic circle is the subhorizon counterpart to the… … Wikipedia
Lower tangent arc — A lower tangent arc is a rarely observable halo, an optical phenomenon appearing under and tangent to a 22° halo centred around the sun.Just like upper tangent arcs, the shape of a lower tangent arc is dependent on the altitude of the sun. As the … Wikipedia
False sunrise — Extremely rare False Sunrise as seen near Bologna, Italy in October 2008. Note the lake reflection effect which is not real because there is no water in between. A false sunrise or dawn sundog is a very particular kind of parhelion, belonging to… … Wikipedia
