A woman grasps the bare chest of a man in an Oskar Kokoschka painting titled Bride of [this phenomenon], and a Greek god of this phenomenon crowns Flora in a Tiepolo painting.  
A woman grasps the bare chest of a man in an Oskar Kokoschka painting titled Bride of [this phenomenon], and a Greek god of this phenomenon crowns Flora in a Tiepolo painting.  In another work, a god of this domain is held onto by a golden-haired nude and points his mouth in the direction of the title figure, who stands on a shell.  A tree on a lake is affected by this title phenomenon in a painting by Jack Pine artist Tom Thomson.  For 10 points, name this phenomenon represented in The Birth of Venus by Zephyr.
A woman grasps the bare chest of a man in an Oskar Kokoschka painting titled Bride of [this phenomenon], and a Greek god of this phenomenon crowns Flora in a Tiepolo painting.  
West {Wind}