Rusmawan Suwarman, Sandy Hardian Susanto Herho , Halda Aditya Belgaman, Dasapta Erwin Irawan, Kimpei Ichiyanagi, Imam Maulana Yosa, Arika Indri Dyah Utami, Sonny Prayogo, Edvin Aldrian

Stable isotopes, $\delta^2$H, $\delta^{18}$O, and d-excess, are valuable tools as natural tracers of diffusion processes and phase changes in the global hydroclimatological cycle. The Indonesian Maritime Continent (IMC) is an archipelago area surrounded by very warm waters which induce convective activities as the primary heat source driving global atmospheric circulation. Given the central role of IMC in this hydroclimatological cycle, comprehensive study and data collection on the stable isotopes of precipitation in this region is crucial.

In this study, we collected monthly stable isotope data from 62 stations spread throughout the Indonesian archipelago from September 2010 to September 2017. We cleaned the data and conducted quality control activities by comparing the Local Meteoric Water Line (LMWL) to previous studies in a similar climatic region. We shared these data openly on our GitHub repository, making them easier to update and interact with users in the future.