Metadata The isotopic compositions of daily precipitation were measured at two stations, Yadong and Pali, in the central Himalayas. The precision for δ18O and δD is ±0.1‰ and ±0.4‰, respectively. The meteorological data, including the collection of precipitation amounts and surface air temperature, was obtained by the Institute of Tibetan Plateau Research, Chinese Academy of Sciences, China. Stations Station Latitude Longitude Altitude (m.a.s.l.) Sampling period Samples (n) Yadong 27° 29’ 40” N 88° 55’ 01” E 2945 2014-03-13 - 2015-07-18 125 Pali 27° 43’ 16” N 89° 09’ 08” E 4300 2014-03-18 - 2015-07-23 130 Variable definitions Description Unit Equipment Additional description Date time − − − Air temperature Celsius (°C) − − Precipitation mm − − Water vapour isotopic ratio (δ18O) per mil Picarro-2130i Liquid Water Isotope Analyzer Normalized to V-SMOW Water vapour isotopic ratio (δD) per mil Picarro-2130i Liquid Water Isotope Analyzer Normalized to V-SMOW Deuterium excess (d-excess) per mil d-excess=δD-8*δ18O Reference paper Axelsson, J., Gao, J., Eckhardt, S., Cassiani, M., Chen, D. & Zhang, Q. (2023). A precipitation isotopic response in 2014-2015 to moisture transport changes in the central Himalayas. Journal of Geophysical Research: Atmospheres