Dear authors
while the comments of reviewer 2 and most of those of reviewer 1 have been well addressed, in the Response to the comments of reviewer 1 (3 and 4) about the size dependent kinetics, you have not really addressed this discussion in the new version of the manuscript. I have the impression that part of this discussion comes from not being clear about which quantity is size dependent. Please make sure to state somewhere in the manuscript that if the reaction occurs at or near the surface, the uptake coefficient remains the same, while the degradation rate of OL is size dependent. You could cite Steimer et al., ACP, 2014, where the math of this has been explicitly outlined. In turn, the size dependent degradation then also allows to draw the conclusion about the kinetic regime (surface reaction or reaction-diffusion limitation), you could cite Berkemeier et al., ACP, 2013, for the definitions and terminology.
Please also address the error bars in the figures mentioned by the reviewer.
Thank you
Markus