Atmospheric flask sampling program of MPI-BGC, version 2025.2

This dataset contains the quality controlled, calibrated measurements of atmospheric greenhouse gas concentration and isotopic composition from air flask samples collected at a global network of stations. Version 2025.2 contains the observations from 2004 until early 2025. Sampling and measurement procedures, quality control, data screening and data format are described in the included report "The atmospheric flask sampling program of MPI-BGC, version 13", https://edmond.mpg.de/file.xhtml?fileId=108234&version=1.0.