FTIR ethane (C2H6) total columns and low vertical resolution profile data at Porto Velho (Brazil). Details on the FTIR C2H6 retrievals can be found in https://doi.org/10.1016/j.jqsrt.2015.03.017. The retrieval parameters used in the present C2H6 time-series at Porto Velho are following the settings described in this latter study, except that the third spectral micro-window is not used due to the high humidity of the Porto Velho site. Data users are kindly invited to collaborate to ensure a proper use of the FTIR data (e.g. appropriate use of the averaging kernels). The guidelines in the GEOMS documentation should be used to select the latest version of a data file in case files have overlapping dates.