abatement

in atmospheric chemistry
https://doi.org/10.1351/goldbook.A00013
Action taken to reduce
air pollution
which involves the use of control equipment or some new process. This refers to a reduction or lessening as opposed to
elimination
of a type of discharge or pollutant.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2169 [Terms] [Paper]