data set for Carbonyl sulfide sulfur isotope fractionation during uptake by C3 and C4 plants

This data set is used in the manuscript “Carbonyl sulfide sulfur isotope fractionation during uptake by C3 and C4 plants” submitted to JGR-biogeosciences. It contains results from plant chamber and carbonyl sulfide (COS) diffusion experiments, end calculated fractionations (ε), and leaf scale relative uptake (LRU) values. The rows marked with * contain data of plant chamber experiments that were presented previously (Davidson et al., 2021). Fractionation are calculated as ε=-1000*ln(R/R0)/ln(f). Where f is the ratio of final/initial COS concentrations, and R and R0 are the 34S/32S ratios for the final and initial samples respectively. LRU is calculated as (As/Ac)*(Cc/Cs) where Cc and Cs represents the ambient concentration for CO2 (ppm) and COS (ppt) respectively, and Ac and As represents the uptake flux for CO2 (ppm*s-1) and COS (ppt*s-1) respectively. Cc and Cs are calculated as the average value between initial and final concentrations for each experiment, and Ac and As are calculated as (initial concentration – final concentration)/(experiment time).