The authors have reasonably addressed the comments of the reviewers. However, many alterations and some clarifications are needed before the manuscript and its Supplement can be published in ACP.

For the main text:
Page 1, lines 1-3: There is too much "organic" in the title. I suggest replacing "organic aerosol" by "aerosol" in line 2.
Page 2, line 27: Replace "pyrolisis" by " pyrolysis".
Page 3, line 9: Replace "homologs" by "homologues".
Page 4, line 1: Replace "Anthony Chen" by "Chen".
Page 4, lines 3-4: "Viana et al., 2008" should be added as a reference here. The full reference is given below (see note for Page 32).
Page 5, line 2: Replace "In addition, the" by "The".
Page 5, line 30: Replace "collected in" by "collected on".
Page 6, line 8: Replace "were carry" by "were carried".
Page 6, line 30: Replace "then they were subjected to ultrasonic agitation for 20 min" by "then ultrasonic agitation was applied for 20 min".
Page 7, line 1: Replace "flow ultra-high" by "flow of ultra-high".
Page 7, line 6: Replace "The another fraction" by "Another fraction".
Page 7, line 9: Replace "Diazomethane (CH2N2) solution" by "CH2N2 solution".
Page 7, line 15: Replace "Brown et al., 2002" by "Brown et al. (2002)".
Page 8, line 23: Replace "over determined" by "overdetermined".
Page 9, line 6: Replace "2015)." by "2015) and was also used in the current study.".
Page 9, line 14: Replace "based on" by "based their CMB on".
Page 9, line 17: Replace "source profile" by "source profiles".
Page 9, line 19: Replace "while diesel" by "while the diesel".
Page 9, line 20: Replace "by heavy" by "of heavy".
Page 9, line 23: Replace "a source profile" by "source profiles".
Page 10, line 11: Replace "of source profiles" by "of the source profiles".
Page 10, line 29: Replace "A detailed" by "Detailed".
Page 11, line 1: Replace "All the samples" by "All samples".
Page 11, line 2: Replace "of 2011" by "of the 2011".
Page 11, line 5: Replace "to the last" by "to that of the last".
Page 11, lines 5-6: It say here "eight", but Fig. 2 contains only data for seven compound classes.
Page 11, line 13: Replace "to some compounds" by "to the fact that some compounds".
Page 11, lines 19-20: Replace "sections will be analyzed the organic composition of the fine organic aerosols using" by "sections the organic composition of the fine organic aerosols will be analyzed using".
Page 12, line 5: Insert a space before "The average".
Page 12, line 9: Replace "emissions sources" by " emission sources".
Page 12, lines 18 and 20: Replace "of the 2011" by "of 2011".
Page 13, line 9: Replace "Benzo(a)pyrene + Benzo(e)pyrene" by "benzo(a)pyrene + benzo(e)pyrene".
Page 13, line 11: Replace "fine OC samples" by "fine samples".
Page 13, line 18: Replace "illustrated by" by "illustrated in".
Page 13, line 24: Replace "due to PAHs" by "because PAHs".
Page 13, line 26: Replace "it would be determined the source origin (e.g." by "the source could be determined (e.g.,".
Page 14, line 2: Replace "source for" by "sources for".
Page 14, line 3: Replace "Presence of" by "The presence of".
Page 16, line 1: Replace "included the cis-9-Octadecenoic acid" by "included cis-9-octadecenoic acid".
Page 16, lines 2, 4, 10, 11, and 18: Replace "cis-9-Octadecenoic acid" by "cis-9-octadecenoic acid".
Page 16, line 6: Replace " oxidation from gaseous precursors" by "oxidation".
Page 16, line 8: Replace "while" by "versus".
Page 16, lines 11-13: I cannot follow the reasoning here. I would expect that high oxidant concentrations would lead to high ratios instead of to low ratios.
Page 16, line 25: Replace "product of" by "products of".
Page 16, line 26: Replace "The pinonic" by "Both pinonic".
Page 17, line 12: Replace "are the tracers" by "are tracers".
Page 17, line 13: Replace "the tracer" by "are a tracer".
Page 17, line 16: Replace "the OC samples" by "the samples".
Page 17, line 24: Replace "of fall" by "of the fall".
Page 17, line 26: Replace "exhibited" by "encountered".
Page 18, line 2: Replace "in the Mexico" by "in Mexico".
Page 18, line 3: Replace "calculated in" by "observed in".
Page 18, line 23: Replace "for the levoglucosan" by "for levoglucosan".
Page 19, line 17: Replace "whilst 14" by "whereas 14".
Page 19, lines 18-19: Replace "Mancilla et al. (2015)" by "(Mancilla et al., 2015) ".
Page 19, line 24: Replace "operations emissions for all monitoring campaigns were the highest. In analysis" by "operation emissions were the highest for all monitoring campaigns. When examining".
Page 19, line 30: Replace "In analysis of the" by "With regard to the".
Page 19, line 32: Replace "some higher" by "somewhat higher".
Page 20, line 1: Replace "There are not similar" by "There were no similar".
Page 20, line 3: Replace "results were similar" by "results are similar".
Page 20, line 4: Replace "for the Mexico" by "for Mexico".
Page 20, line 17: Replace "to the secondary" by "to secondary".
Page 20, line 20: Replace "The vegetative detritus" by "Vegetative detritus".
Page 20, line 21: Replace "the less emitted" by "the least emitted".
Page 20, line 23: Replace "which contribute with" by " which contributes with".
Page 20, line 24: It is unclear what is meant by "types of biomass". Which types? Furthermore, I cannot follow the reasoning in lines 24-31. Clarification and rephrasing are needed.
Page 20, line 26: Replace "has large" by "has a large".
Page 20, line 28: Replace "has not forests" by "has no forests".
Page 20, line 31: Replace "here is" by "it is".
Page 20, line 32: Replace "due to prior" by "as appeared from previous".
Page 21, line 4: Replace "emits low" by "emits a low".
Page 21, line 13: Replace "e.g. plant" by "e.g., plant".
Page 21, line 14: Replace "some times" by "sometimes".
Page 21, lines 24-25 and 26: Replace "cis-9-Octadecenoic acid" by "cis-9-octadecenoic acid".
Page 22, line 1: Replace "for the 64%" by "for 64%".
Page 22, line 2: Replace "the vegetative detritus" by "vegetative detritus".
Page 22, line 3: Replace "less contributors" by "lowest contributors".
Page 22, line 4: Replace "the outcomes of a comparison with other studies were that" by "a comparison with other studies indicates that".
Pages 22-33, Reference list:
The initials for the authors are not always in the proper format; the first initial should be preceded by a comma, there should be period after each initial and there should be a space between subsequent initials.
Furthermore, titles of journal articles should be in lower case instead of in Title Case (e.g., for Simoneit, 1985 and Simoneit, 1986).
Page 23, line 6: Replace "Antony Chen, L.-W." by "Chen, L.-W. A.".
Page 23, line 17: Replace "Chen, W. A." by "Chen, L. W. A.".
Page 24, line 18: Replace "A. (Eds):" by "A.:".
Page 25, line 19: Replace "INEGI," by "INEGI:".
Page 25, lines 20 and 23: Replace "INEGI.. by "INEGI:".
Page 26, line 6: Replace "aerosols, .Environ." by "aerosols, Environ.".
Page 28, lines 9-10: "Paatero, 1997" should come on page 27 before "Park et al., 2006".
Page 29, lines 25-28: These two references should be moved down; they should come on page 31 after "Spurny, 2000".
Page 31, lines 28-30: "Stone et al., 2008" should come on page 32 after "Standley et al., 1987".
Page 32, between lines 13 and 14: The following reference should be added here:
Viana, M., Kuhlbusch, T. A. J., Querol, X., Alastuey, A., Harrison, R. M., Hopke, P. K., Winiwarter, W., Vallius, M., Szidat, S., Prévôt, A. S. H., Hueglin, C., Bloemen, H., Wåhlin, P., Vecchi. R., Miranda, A. I., Kasper-Giebl, A., Maenhaut, W., and Hitzenberger. R.: Source apportionment of particulate matter in Europe: A review of methods and results, J. Aerosol Sci. 39, 827-849, 2008.
Page 33, lines 13-16: "Yunker et al." should start on a new line; the publication year of the reference is missing and "Geochemistry 33," should replaced by " Geochemistry, 33,".
Page 36, line 2: There is something wrong with the explanation given here; also "curly brackets" should be replaced by "parentheses".
Page 36, line 5: Replace "that dates" by "that the dates".
Page 37, line 4: "Akyüz and Cabuk, 2010" is missing in the Reference list.
Page 37, line 6: Replace "BaP" by "BeP".
Page 41, line 4: Replace "line is the daytime concentrations while the dot line is the" by "line represents the daytime concentrations while the dotted line represents the".

For the Supplement:
Pages 1-4, Table S1: Consistency is needed here. Therefore, all names of the organic compounds should start with a lower case letter instead of with a capital.

Some alterations are still needed before the manuscript and its Supplement can be published in ACP.

For the main text:
Page 10, line 28: It says here now "seven compound classes", but Table S1 contains eight compound classes, be it that for the last one (Secondary biogenic tracers) no data are given in Fig. 2. Therefore, replace "seven" by "eight" here.
Page 11, lines 1-2: Replace "For the seven resolved compound classes in the last three campaigns (Fig. 2), the n-alkanoic acids" by "The data for seven of the eight resolved compound classes are shown in Fig. 2. For the last three campaigns, the n-alkanoic acids".
Page 16, line 7: Replace "Similarly, the stagnation of aerosols may reflect the impact of" by "Similarly, air mass stagnation may lead to".
Page 17, line 5: Replace "are the tracers" by "are tracers".
Page 17, line 6: Replace "the tracer" by "are a tracer".
Page 19, line 10: Replace "whereas samples" by "whereas 14 samples".
Page 19, line 18: Replace "examining of the" by "examining the".
Page 32, line 23: Replace "Lowenthai" by "Lowenthal".
Page 32, line 26: Replace "Antony Chen, L.-W." by "Chen, L.-W. A.".
Page 36, line 4: Replace "that dates" by "that the dates".

For the Supplement:
Table S1, page 1: Replace "18a(H)-30-Norneohopane" by "18a(H)-30-norneohopane.
Table S1, page 4: Replace "cis-9-Octadecenoic acid" by "cis-9-octadecenoic acid".
Table S1, page 4: Replace "trans-9-Octadecenoic acid" by "trans-9-octadecenoic acid".

One alteration is still needed before the manuscript and its Supplement can be published in ACP.

For the main text:
Page 11, line 3: Replace "campigns" by "campaigns".