Fig. 4: Conceptual model of the role of reactive aldehyde chemistry in OH formation.
From: Reactive aldehyde chemistry explains the missing source of hydroxyl radicals
The OH formation is dominated by different mechanisms that largely depend on the NOx emission intensity. The Base is the well-known and classical OH formation mechanisms, the LIM1 is Leuven Isoprene Mechanism updated version 1, and the RAM is the proposed Reactive aldehyde Mechanism (Created with BioRender.com).
