The GGG2020 TCCON data product relies on the Goddard GEOS product for a priori meteorological information. In particular, it was developed with the GEOS FP-IT (Forward Processing for Instrument Teams) product, as we required the longer record of FP-IT (circa 2000 on) compared to the more recent FP product (circa 2013 on). In 2023, we were inform...