Supporting Dataset and Codes for "Stratosphere-Troposphere Exchange of Water Vapor Based on Observations and Reanalyses"

This supports the manuscript titled "Stratosphere-Troposphere Exchange of Water Vapor Based on Observations and Reanalyses" submitted to *Geophysical Research Letters*. It includes:- Python and NCL scripts used for processing satellite observational data from COSMIC, CloudSat, MLS, and reanalyses data.- Post-processed Reanalysis data from ERA5 and MERRA-2 and observational data- Final data used for figures and statistical analyses.- Jupyter notebooks for reproducing Figures 1–3, Table 1 and supplementary figures. All data are stored in NetCDF or NumPy `.npz` format. Please refer to the included `README.md` for detailed instructions on data structure, variable definitions, and how to reproduce the results.