The study by Ladstaedter et al. shows Global Navigation satellite based temperature analysis of the tropopause altitude and temperature. The analysis covers 2002-2024 and provides a global view on the tropopause using the lapse rate tropopause LRT according to WMO. The authors  further apply multiple linear regression with regressors for QBO and ENSO to derive trends of the LRT-height, and the LRT temperature. Seasonally and regionally resolved  trends are presented. The authors also check for trend robustness with regard to the end date of data set.

They find a significant positive temperature increase at the LRT  in the tropics and southern subtropics over time with, but no significant rise in LRT altitude. Instead the northern extratropics show an increase in LRT-height, and partly weak positive trend.

Despite providing no analysis for the trend differences the paper provides extremely interesting data to the community. It is very well written, Figures are clear and the topic is well within the scope of ACP.

I recommend the paper for publication with just very few minor remarks to be considered and which are given below.

Data:

1) Given the change of available profiles from COSMIC in the year 2007: How does this affect the trend estimates and statistics?

2) Though the GNSSS data are a valuable and well established data set for deriving tropopause altitudes, the authors should provide in this manuscript a short paragraph on temperature uncertainties since they derive temperature trends here, despite given in other literature sources.

Methods: Regarding potential multiple tropopauses: How are these treated?

Does the analysis take the upper, or the lower one, or exclude such multiple cases particularly in the subtropics?