Reflection rainbow International Cloud Atlas

Reflection of sunlight from smooth water surfaces (such as lakes, or occasionally a calm sea or calm coastal waters) sends reflected sunlight upwards. The reflected sunlight can act as a light source for both primary and secondary “reflection rainbows”.

Rainbow Community Cloud Atlas

Breathtaking rainbow-coloured clouds spread stunning colours in

Revamped atlas to give clouds their day in the sun

Noctilucent cloud - Wikipedia

Revamped atlas to give clouds their day in the sun

Stunning 'new' cloud formations captured in updated atlas – in

Sea spray bow International Cloud Atlas

Secondary bow International Cloud Atlas

The University of Chicago Magazine

Spectacular 'rainbow clouds' light up northern skies in a rare