Mass Spectra, figure 1:

-The aerosol mass spectra are dilution-corrected by a factor of ~6 for the nitrogen flow dilution before measurements
-The ion signals above m/z 75 are multiplied by a factor of 15 for clarity in the figure.
-Aerosol mass spectra of the 0.1%, 0.2%, 1% and 0.2% CO2 experiments (with and without H2S) are not shown, as the 0.5% mass spectra a representative of our conlcusions.

Aerosol Mass Loading and Composition, figure 2:

-The mass loadings are dilution-corrected by a factor of ~6 for the nitrogen flow dilution before measurements
-Data for the 0% CO2/0:1 O:C ratio are from our previous work, Reed et al. (2020).

Total Sulfate, Organic Oxidized Sulfur, and Inorganic Sulfate Mass Loading, figure 3:

-The mass loadings are dilution-corrected by a factor of ~6 for the nitrogen flow dilution before measurements
-Coos represents the total Organic Oxidized Sulfur (OOS) and Cis represents the Inorganic Sulfate mass loadings

fORS, proxy variable for Organic Reduced Sulfur, figure 4:

-f45 in the data set represents fORS
-Data for the 0% CO2/0:1 O:C ratio are from our previous work, Reed et al. (2020).

nfH2SO4+ versus nfHSO3+, figure S1:

-The data presented are shown as a function of each experiment with H2S as a function of CO2, with two repeats each for 0.2% and 0.5% CO2
-nf98 represents nfH2SO4 and nf81 represents+ the nfHSO3+
-included here is the fH2SO4+ (f98) of the pure ammonium sulfate standard used to calculate the nfH2SO4+ values shown using equation 2 in the main text.

Upper Estimate of Inorganic Sulfate Aerosol Mass Loading, figure S2:

-The mass loadings are dilution-corrected by a factor of ~6 for the nitrogen flow dilution before measurements
-InorgS represents the Inorganic Sulfate, OrgS represents the Organic Oxidized Sulfur (OOS)

Enhancement Spectra, figure S3:

-The mass loadings are respectively dilution-corrected for the nitrogen flow dilution before measurements
-Ratio_01prCO2_02-11_to_01-15 is the 0.1% CO2, 0.1% CH4, and 5 ppmv H2S aerosol mass spectrum devided by the spectrum of its control (i.e., without H2S)
-Ratio_Avg5ppm_to_AvgNoCO2H2S is the 0% CO2, 0.1% CH4, and 5 ppmv H2S aerosol mass spectrum devided by the spectrum of its control (i.e., without H2S) from our previous work Reed et al. (2020)