Net effect of chemical erosion in a tropical basin (Mahanadi river, India) on carbon cycle: Constraints using water chemistry and δ34S

We present new time-series chemical and sulfur isotopic data for one of the distributaries (Paika river) for the Mahanadi river (India). The chemical data include major cations (Na, K, Ca, and Mg), anions (HCO3, Cl, SO4, and NO3), and silica concentrations for the water samples, which are collected at weekly intervals over a duration of 15 months (August 2019 to October 2020). In addition, this element also includes major ions data for rain and groundwater samples from the lower reaches of the basin.