In 2021 the IPCC FAR GISS binary data were converted by DKRZ to ASCII tables and NetCDF files. The two format types are stored in the two Datasets of this Experiment record.
Also see the Additional_info about GISS data postprocessing.
"Remarks on the FAR postprocessing of the GISS data and their history" is a written documentation of the postprocessing efforts for the FAR-GISS data. In addition, here are some remarks about how FAR data had came to WDC-Climate/DKRZ.