This release adds support for RTTOV v14. Support for RTTOV v13 and v12 is maintained. Support for RTTOV v11 has been removed. The new version is backwards compatible with v2.0 with the following exceptions: changes to the Sample Background data mean the sample data for each RTTOV version has changed, changed limit of BT difference in O-B check so more tests now pass, changes to SSMIS setup to account for new additions in RTTOV-14. For additional information, please refer to the the software pages https://nwp-saf.eumetsat.int/site/software/1d-var/.