The 2017 Mega-Fires in Central Chile: Impacts on Regional Atmospheric Composition and Meteorology Assessed from Satellite Data and Chemistry-Transport Modeling

Round 1

Reviewer 1 Report

The paper presents some useful results. It is a good technical report, probably very interesting for the stakeholders. Although the manuscript has some good outputs for the readers, I will suggest Reframe the conclusion with respect to future scope of the study and incorporation of a flowchart to depict the proper methodology adopted will enhance the manuscript.

Comments for author File: Comments.pdf

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 2 Report

Excellent article! I have only a few questions and remarks:

Line 8: For easier understanding of abstract meaning of AOD (Aerosol Optical Density) should be given.

Figure 2b, Line 231:        You argue that AOD in model is significant lower than observed because the                                       model is not able to capture coarse PM. Why is it not possible to capture that                                               fraction? Could the model be improved? There is a significant difference of                                               the curves but the standard deviation of calculated and measured values                                    overlap.

Line 327:             secondary pollutant ozone: Is the influence of heterogenous reaction of ozone on the                               surface of PM included in the model?

Line 335:             What is the meaning of “particle phase H2SO4”? Pure H2SO4 crystals? Or                                            incorporated in ice crystals?

Line 367:             Your explanation of  a more homogenously spread H2SO4 plume compared to other                    pollutants by concurring SO2 and NO2 reacting with OH is very convincing. Is it                                   included in the model calculation? It should be interesting to compare plumes of                      HNO3 with those of H2SO4. Do you think the reactivity of H2SO4 and it’s high                                     solubility in water could be additional reasons of the more homogenous plume?

Line 455:             You calculated decrease of surface temperature -1 K. How exact is this value? Do you                               have standard deviation?

Figure A1 (b):    What is the meaning of: CH3COE, NC4H10, TOL? Which is the reference point (100 %)                               to the specific values given in %?

Figure A2 (b):    Is “r” aerodynamic or geometric radius?

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 3 Report

This is generally a well written and interesting paper. The available data is used well and the study could be a good basis for further work.

I have attached some comments for the authors to address.

Comments for author File: Comments.pdf

Author Response

Please see the attachment

Author Response File: Author Response.pdf