Interactive comment on “ Factors controlling marine aerosol size distributions and their climate effects over the Northwest Atlantic Ocean region ” by Betty Croft et al

The paper by Croft et al. provides an assessment of size distributions and it’s controls over the Northwest Atlantic Ocean. Climate effects of selected processes are included as forcings, both direct and 1st indirect effect. The work is very valuable: marine aerosol background, especially aerosol size distribution, is not well constrained in climate models. While the analysis in the manuscript is rather standard, the paper is generally well written and results are presented in a clear way. Below are detailed comments on selected issues with the research itself. Some issues listed below should become more clear in the revised manuscript.