dark and bright clouds in blue sky over ocean - abstract natural background

abstract aerosol airspace altitude atmosphere azure background blue bright brightness brilliance cirriform cloud clouds cloudscape cloudy cumulonimbus cumulus dark day empyrean ether evening golden grey heaven heavens homosphere horizon illumination layers levels light mesosphere natural nature nephology ocean over regions sea skies skyscape solar space stratiform stratosphere sunbeams sunlight sunrays sunshine troposphere upper vault warm water welkin white yellow yonder