The authors have appropriately addressed the comments of the two anonymous referees and they have modified their manuscript accordingly. However, a number of alterations and corrections are needed for the Main text and Supplement before the manuscript can be published in ACP.

For the Main text:
Line 24: Replace "in Asian" by "in the Asian".
Line 61: The acronym "SA" is already define in line 45; therefore, replace "source apportionment (SA) analysis" by "SA analysis".
Line 75: Replace "the zinc" by "a zinc".
Line 78: Replace "to notice" by "to note".
Line 109: Replace "to other" by "to the other".
Lines 124, 330, and 333: Replace "e.g." by "e.g.,".
Line 171: The acronym "EF" is already define in line 131; therefore, replace "enrichment factor (EF)" by "EF".
Line 175: Replace "results in" by "result in".
Line 186: Replace "concentrations" by "concentrations of".
Line 190: Replace "and Fe" by "Fe".
Line 246: Replace "median and" by "medians and".
Line 255: Replace "components elements" by "component elements".
Line 285: Replace "approximately" by "at approximately".
Line 290: Replace "to notice" by "to note" and replace "while x-axes" by "while the x-axes".
Line 338: Replace "AS, JN" by "AS, and JN".
Line 405: Replace "5," by "5, 100065,".
Line 413: Replace "2012, 13" by "2012, 585791".
Line 484: Replace "2013, 15" by "2013, 942916".
Line 508: Replace "742," by "742, 140332,".
Line 528: Replace "228: 290" by "228, 290".
Line 616: Replace "their enrichment" by "their PM10 enrichment".
Line 620: Replace "plot of" by "plots of" and replace "Fig. S4 is shown" by "see Fig. S4".

For the Supplement:
Page 3, line 8: Replace "plot of" by "plots of".
Pages 12-13, Table S2: Many numeric data in the Table are given with too many significant figures; two significant figures normally suffice and three suffice when the first significant figure is "1"; thus, as examples, replace "3089" by 3100" and replace "12158" by "12200".

The following alterations are still needed for the Supplement before the manuscript can be published in ACP.
In Table S1:
- second column, for P: replace "9" by "9.0";
- second column, for Cl: replace "3" by "3.0";
- second column, for K: replace "2" by "2.0";
- second column, for Sb: replace "9" by "9.0";
- fourth column, for Zr: replace "7" by "7.0";
- fifth column, for Si: replace "3.52" by "3.5";
- fifth column, for Se: replace "7" by "7.0";
- sixth column, for Rb: replace "9" by "9.0";
- seventh column, for Si: replace "2.43" by "2.4";
- eighth column, for Ba: replace "16" by "16.0";
- ninth column, for Ti: replace "7.09" by "7.1";
- ninth column, for Cr: replace "17" by "17.0";
- ninth column, for Mn: replace "11" by "11.0".
In Table S2:
- Delhi, third column, for Se: replace "3" by "3.0";
- Delhi, seventh column, for As: replace "10" by "10.0";
- Delhi, seventh column, for Sn: replace "18" by "18.0";
- Delhi, eighth column, for Cu: replace "13" by "13.0";
- Delhi, ninth column, for Ba: replace "15" by "15.0";
- Beijing, second column, for Br: replace "14" by "14.0";
- Beijing, seventh column, for Ba: replace "4" by "4.0";
- Beijing, ninth column, for As: replace "7" by "7.0";
- Krakow, fourth column, for Cu: replace "12" by "12.0";
- Krakow, sixth column, for Cu: replace "14" by "14.0";
- Krakow, sixth column, for Sb: replace "10" by "10.0";
- Krakow, ninth column, for Br: replace "15" by "15.0";
- London, third column, for Zn: replace "6" by "6.0";
- London, fourth column, for Cu: replace "4" by "4.0";
- London, seventh column, for Pb: replace "1" by "1.0";
- London, ninth column, for Mn: replace "3" by "3.0";
- London, ninth column, for Cu: replace "6" by "6.0".
In Table S3:
- second column, for Ca: replace "10" by "10.0";
- third column, for Fe: replace "2" by "2.0";
- fifth column, for Ca: replace "8" by "8.0";
- fifth column, for Fe: replace "10" by "10.0";
- eighth column, for Ca: replace "8" by "8.0".