IPA: /ˌætməˈsfɛrɪkli/
KK: /ætˈmɑs fɪr ɪk li/
In a way that relates to the atmosphere or the mood of a place.
The film was atmospherically rich, creating a deep sense of place and emotion.
Atmospherically → It is formed from "atmosphere" (from Greek "atmos" meaning vapor and "sphaira" meaning sphere) and the suffix "-ically" (meaning in a manner relating to). The word "atmospherically" refers to something that relates to or is characteristic of the atmosphere.
Think of 'vapor' ('atmos') and 'sphere' ('sphaira') to remember that 'atmospherically' means in a manner relating to the atmosphere.