Algorithm to accompany "Tropospheric ice in a warming world" by Dou et al. (2025)

This project includes several main data processing algorithms used in this study. These include algorithms for extracting deep convection events from ERA5 reanalysis data and TRMM satellite data, as well as algorithms for calculating ice content from JRA55 and MERRA2 reanalysis data and CALIPSO lidar observation data. The following is an introduction to each code file:

- “ERA5_diff_threshold_deep_convection_events_algorithms.py” is the code for extracting deep convection events from the ERA5 reanalysis data for the period 1979–2021 using a threshold-based method.- “TRMM_deep_convection_events_algorithms.py” is the code for extracting deep convection events from the TRMM satellite data for the period 1998–2013 using a threshold-basedmethod.- “JRA55_ice.py” is the code for calculating the ice content from the JRA55 reanalysis data for the period 1979–2021.- “MERRA2_ice.py” is the code for calculating the ice content from the MERRA2 reanalysis data for the period 1980–2021.- “calipso_iwc_algorithms.py” is the code for calculating the ice content from the CALIPSO lidar observation data for the period 2007–2019.