Tropopause height is a key climate change indicator, with accurate long-term trends vital for climate research. Radiosonde data, while reliable, has limited coverage. ERA5 (European Centre for Medium–Range Weather Forecasts Reanalysis v5) is a reanalysis dataset that provides global data, enabling comparisons of tropopause height estimates and then analyzed for long-term trends. Results show a 32 m mean difference (radiosonde – ERA5) with trends of +9 m/year (radiosonde) and +7 m/year (ERA5), crucial for characterizing tropopause changes under climate change.