Atmosphere left following charge (4)
I believe the answer is:
feel
'atmosphere' is the definition.
(feel is a kind of atmosphere)
'left following charge' is the wordplay.
'left' becomes 'l' (common abbreviation).
'following' says to put letters next to each other.
'charge' becomes 'fee' (fee is a kind of charge**).
'l' put after 'fee' is 'FEEL'.
(Other definitions for feel that I've seen before include "Perceive, sense" , "Perceive by touch" , "Find by groping" , "impression" , "Consider" .)