Dear Fulin Yang,
I am pleased to accept your manuscript "Soil-atmosphere exchange of carbonyl sulfide in Mediterranean citrus orchard" for publivation in Atmospheric Chemistry and Physics, subject to a few technical corrections listed below.
Sincerely,
Janne

Lines 17-20: “The spatial heterogeneity in soil COS exchange indicated net uptake below and between trees of up to -4.6 pmol m-2 s-1, and net emission in sun exposed soil between rows, of up to 19 +2.6 pmol m−2 s−1, with a mean uptake value of -1.10 ± 0.10 pmol m−2 s−1.” Negative uptake, as stated in the text, is emission. Thus, this sentence needs revision. My suggestion is “The spatial heterogeneity in soil COS exchange indicated net uptake below and between trees of up to 4.6 pmol m-2 s-1, and net emission in sun exposed soil between rows, of up to 2.6 pmol m−2 s−1, with overall mean uptake value of 1.1 ± 0.1 pmol m−2 s−1.”

Line 27: “-0.37”. The second decimal in this value is not significant (does not contain information) as the uncertainty of the value is 0.3. Thus, I recommend expressing it here as -0.4 ± 0.3 (see also my comments below).

I have several changes to the representation of significant digits of numeric values, These are listed below.

Line 20: 1.10 ± 0.10 pmol m−2 s−1 should be written as 1.1 ± 0.1 pmol m−2 s−1 as second decimal is as uncertain to be insignigicant.

Line 23: -1.02 ± 0.26 pmol m-2 s-1 should be expressed as -1.0 ± 0.3 pmol m-2 s-1.

Line 180: “-1.10 ± 0.10 pmol m-2 s-1”. As mentioned above, should be written as 1.1 ± 0.1 pmol m−2 s−1.

Line 183: “-3.00 ± 0.10”. This should be written as -3.0 ± 0.1.

Line 252: “4.40 ± 0.29 mm2 s-1”. This should be written as 4.4 ± 0.3 mm2 s-1 

Line 254: “-1.02 ± 0.26 pmol m-2 s-1” should be -1.0 ± 0.3 pmol m-2 s-1. 

Line 255: “-1.10 ± 0.10 pmol m-2 s-1” should be 1.1 ± 0.1 pmol m−2 s−1.

Line 270: “-0.37 ± 0.31” should be written as -0.4 ± 0.3. This should be reflected in the value reported in the abstract.

Line 282: “(+0.53 ± 0.66)” should be written as (+0.5 ± 0.7).