High-precision atmospheric measurements of greenhouse gases, stable isotopes, and radiocarbon in carbon dioxide in flask samples collected at the ATTO Tall Tower. Version 2025.1

This dataset contains results from the continuous monitoring program of high-precision measurements of mole fracions of greenhouse gases,stable isotopes in CO2 and CH4, and radiocarbon in CO2, obtained at the Amazon Tall Tower Observatory (ATTO), located in the central Amazon region of Brazil. In September 2021, we installed an automated sampler designed and built by the Integrated Carbon Observation System (ICOS) to collect air samples in 3 litter glas flasks at a height of 324 m above the ground level. Samples are collected weekly, during an one-hour integration time between 13:00 and 14:00 h local time (17:00-18:00 UTC). The flasks are shipped to Jena, Germany, for analyses of CO2, CO, CH4, N2O, H2, SF6, 13C-CO2, 14C-CO2, 18O-CO2, 13C-CH4, 2H-CH4, O2/N2, and Ar/N2 at the laboratories of the Max Planck Institute for Biogeochemistry (MPI-BGC). Measurements from the flask system provide reference information for this site and act as an independent quality control for the other high frequency measurements. This dataset covers the period from 2021-09-09 to 2024-01-04.