Por lo visto es un "arcoiris de nieble" (fogbow), según un artículo en el Telegraph sobre esta foto:
http://www.telegraph.co.uk/news/2016/11/23/unbelievably-beautiful-white-rainbow-captured-rare-photo/
http://earthsky.org/earth/what-is-a-fogbow
Fotos de la página de la wikipedia:
https://en.wikipedia.org/wiki/Fog_bow
(https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Fogbow_glory_spectre_bridge_edit_1.jpg/440px-Fogbow_glory_spectre_bridge_edit_1.jpg)
(https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Fogbow_spectre_at_the_bay.jpg/440px-Fogbow_spectre_at_the_bay.jpg)
(https://upload.wikimedia.org/wikipedia/commons/thumb/0/08/Fogbow_over_the_atmospheric_research_tower_at_Summit_Station%2C_Greenland.jpg/440px-Fogbow_over_the_atmospheric_research_tower_at_Summit_Station%2C_Greenland.jpg)