A false sunrise is any of several atmospheric optical phenomena in which the Sun appears to have risen, but is actually still some distance below the horizon. A number of different atmospheric conditions can be responsible for this effect, all of which divert the sunlight in such a way as to allow it to reach the observer's eye, thereby giving the impression that the light comes directly from the Sun itself. The spread of light can sometimes be deceivingly similar to a true sun. Several atmospheric phenomena that may alternatively be called a "false sunrise" are:
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| - False sunrise (en)
- Falsa alba (it)
- 假日出 (zh)
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| - La falsa alba (o più propriamente falsa aurora) è un particolarissimo tipo di parelio (o cane del sole) che si manifesta durante l'alba quando il Sole si trova ancora sotto l'orizzonte. In alcuni periodi dell'anno, l'orizzonte vicino al Sole che sorge inizierà a brillare insolitamente presto. Questo precoce bagliore non proviene direttamente dal Sole ma dalla riflessione della sua luce da parte di nubi altissime composte da cristalli di ghiaccio. (it)
- 假日出或曙光日狗是一種非常獨特的幻日，屬於光學現象暈的家族。 這是一種非常特殊的事件，當太陽還在地平線下時，通過小冰晶體組成的卷雲或卷層雲反射或折射陽光造成的大氣光學現象。 假日出傳播的光比真實太陽的能量為低，但在視覺距離上的行為與真實的太陽上有著驚人的相似。它與非常相似，只是假日出時太陽還在地平線下，而冰晶在地平線之上。 (zh)
- A false sunrise is any of several atmospheric optical phenomena in which the Sun appears to have risen, but is actually still some distance below the horizon. A number of different atmospheric conditions can be responsible for this effect, all of which divert the sunlight in such a way as to allow it to reach the observer's eye, thereby giving the impression that the light comes directly from the Sun itself. The spread of light can sometimes be deceivingly similar to a true sun. Several atmospheric phenomena that may alternatively be called a "false sunrise" are: (en)
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| - A false sunrise is any of several atmospheric optical phenomena in which the Sun appears to have risen, but is actually still some distance below the horizon. A number of different atmospheric conditions can be responsible for this effect, all of which divert the sunlight in such a way as to allow it to reach the observer's eye, thereby giving the impression that the light comes directly from the Sun itself. The spread of light can sometimes be deceivingly similar to a true sun. Several atmospheric phenomena that may alternatively be called a "false sunrise" are:
* Simple reflection of the sunlight off the bottom of the clouds.
* A type of ice crystal halo, such as an upper tangent arc or, more commonly, an upper sun pillar (similar to a subsun, but extending above the sun instead of below it). Like all halos, these phenomena are caused by the reflection and/or refraction of sunlight by ice crystals suspended in the atmosphere, often in the form of cirrus or cirrostratus clouds. The temperature on the ground is irrelevant to their occurrence, meaning that halos can be seen throughout the year and in all climates.
* A type of mirage, specifically the Novaya Zemlya effect. Restricted mainly to the polar regions, this phenomenon was named after its first observation on Novaya Zemlya during the third polar expedition led by Willem Barentsz in 1596/97, when the Sun was seen above the horizon "in his full roundnesse" two weeks before its predicted return after the polar night. The account, written by officer Gerrit de Veer, was met with general scepticism for centuries, and not until modern times was the effect proven to be genuine. The term "false sunrise" should not be confused with "false dawn", which is a term sometimes used to refer to the zodiacal light. (en)
- La falsa alba (o più propriamente falsa aurora) è un particolarissimo tipo di parelio (o cane del sole) che si manifesta durante l'alba quando il Sole si trova ancora sotto l'orizzonte. In alcuni periodi dell'anno, l'orizzonte vicino al Sole che sorge inizierà a brillare insolitamente presto. Questo precoce bagliore non proviene direttamente dal Sole ma dalla riflessione della sua luce da parte di nubi altissime composte da cristalli di ghiaccio. (it)
- 假日出或曙光日狗是一種非常獨特的幻日，屬於光學現象暈的家族。 這是一種非常特殊的事件，當太陽還在地平線下時，通過小冰晶體組成的卷雲或卷層雲反射或折射陽光造成的大氣光學現象。 假日出傳播的光比真實太陽的能量為低，但在視覺距離上的行為與真實的太陽上有著驚人的相似。它與非常相似，只是假日出時太陽還在地平線下，而冰晶在地平線之上。 (zh)
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