Dataset for the publication: Drivers of the δ18O changes in Indian Summer Monsoon precipitation between the Last Glacial Maximum and pre-industrial period

This dataset contains climate model output generated for the study “Drivers of the δ¹⁸O Changes in Indian Summer Monsoon Precipitation between the Last Glacial Maximum and Pre-industrial Period” by Thejna Tharammal, Govindasamy Bala, and Jesse Nusbaumer. The data were produced using the isotope-enabled Community Earth System Model (iCESM/CAM), which explicitly simulates stable water isotopes (δ¹⁸O) in atmospheric moisture and precipitation. The simulations include pre-industrial (PI) control and Last Glacial Maximum (LGM) boundary condition experiments. The files include JJAS climatological means of precipitation variables and source-tagged moisture tracers. Please Cite Tharammal, T., Bala, G., and Nusbaumer, J.: Drivers of the δ18O Changes in Indian Summer Monsoon Precipitation between the Last Glacial Maximum and Pre-industrial Period, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-4468, 2026.