Isotope dataset "Spatial Distribution of Factors Controlling Stable Isotopes in Precipitation in Northern Chile"

S_2_Isotope data: In the Salar de Atacama study, 5 Palmex passive precipitation samplers (Gröning et al., 2012) were installed at different sites in the Salar de Atacama basin to support this study. Samples were collected in 30 mL polyethylene bottles. Seventeen accumulated rainwater samples of various rainwater events were obtained in the period 2017-2019. All these samples were analysed for δ18O and δ2H at the University of Waterloo-Environmental Isotope Laboratory (uwEILAB) using a Los Gatos Research Off-Axis Integrated Cavity Output Spectroscopy (LGR-OA-ICOS) Laser System. The analytical uncertainty is ±0.2‰ for δ18O and ±0.8‰ for δ2H. Additionally, isotopic data in the study area from previously published studies were included in this analysis (Alpers and Whittemore, 1990; Aravena et al., 1999, 1989; Cortecci et al., 2005; CRICYT, 2017; Fritz et al., 1981; Godfrey et al., 2019; Herrera et al., 2016, 2006; Lagos, 2016; López et al., 2016; Moran et al., 2019; Uribe et al., 2015). The dataset consists of 300 isotope analyses in the 1973-2017 period for rain and snow samples accumulated daily or monthly. The water isotope standard is the Mean Ocean Water: Standard Mean Ocean Water (SMOW) and Vienna Standard Mean Ocean Water (VSMOW).