Update History

• 30/03/2023 – updated coefficients for MetopSG MWI with corrected polarisations and updated passbands
• 30/03/2023 – updated MFASIS-NN coefficients for HIM-8/9 AHI, EOS-1 MODIS, N20 VIIRS supporting more channels
• 29/03/2023 – updated coefficients for TROPICS-0 (demonstrator) and new coefficients for TROPICS-3/5/6/7
• 31/01/2023 – new coefficients for FY-3E HIRAS-2
• 23/01/2023 – new coefficients for GOSAT-GW AMSR-3
• 16/12/2022 – updated Landsat-7 TM coefficients now including visible channels and new coefficients for Oceansat-3 SSTM
• 16/12/2022 – MFASIS-NN coefficient files for additional sensors added
• 01/12/2022 – new MFASIS-NN coefficient files for the RTTOV v13.2 release
• 23/11/2022 – new coefficients for NOAA-21 ATMS based on measured spectral responses
• 21/10/2022 – new coefficients for Microsat2b MHS and updated FY-3E MWTS3 coefficients with corrected polarisations
• 05/10/2022 – new coefficients for FY-2B AGRI
• 13/09/2022 – new coefficients for FY-3E MWHS2 based on measured SRFs
• 28/07/2022 – new coefficients for DMSP 1-4 SSH
• 06/07/2022 – new coefficients for NOAA-21 VIIRS
• 01/07/2022 – new MFASIS LUT files (based on “Deff” CLW properties) for GOES-18 ABI
• 29/06/2022 – new coefficients for NIMBUS-5 NEMS, NIMBUS-5/6 ESMR, and updated coefficients for NIMBUS-6 SCAMS
• 27/06/2022 – new MFASIS LUT files (based on OPAC CLW properties) for GOES-18 ABI
• 18/05/2022 – new coefficients for Earth-CARE MSI (IR channels only) and MTG-FCI coefficients with updated channel central wavenumbers
• 09/05/2022 – new coefficients for POLSIR and new AWS coefficients with updated spectroscopy
• 11/02/2022 – new coefficients for FY-3E MERSI-LL (IR channels only)
• 31/01/2022 – new coefficients for AWS and FY-3E MWTS-3, and updated coefficients for MTG-1 FCI
• 12/01/2022 – change polarisations for TROPICS coefficients
• 17/11/2021 – add new Metop-3 GOME-2 coefficients: it is recommended to use RTTOV v13.1 for UV simulations.
• 09/11/2021 – add new MW coefficients based on measured spectral response functions for various sensors
• 31/08/2021 – add new MFASIS LUTs for GEO-KOMPSAT-2A AMI
• 25/06/2021 – add new coefficients for the MVIRI visible channel
• 11/05/2021 – add new coefficients for FY-8(H) VISSR and the NASA SBG mission
• 10/05/2021 – update satellite ID to 2 for MetopSG MWI and ICI for consistency (metopsg_1-6 => Metop D-I); this is a superficial change with no impact on simulation results
• 10/05/2021 – update satellite ID to 2 for MTG-IRS for consistency (mtg_1-6 => Meteosat 12-17); this is a superficial change with no impact on simulation results
• 10/05/2021 – add new coefficients for TRISHNA-TIR
• 04/05/2021 – GEO-KOMPSAT2 AMI coefficients updated with modified channel wavenumbers and spectral responses
• 29/03/2021 – new coefficients for MTG-IRS with Hamming apodisation, FORUM, and Meteor-M2 IKFS2 based on LBLRTM v12.8
• 09/03/2021 – IRIS “C3S” coefficients updated with shifted channel wavenumbers
• 26/01/2021 – new MFASIS LUT files for DSCOVR EPIC
• 25/11/2020 – RTTOV v13.0 released with associated coefficient updates

• 23/11/2020 – new OMS GEMS1 coefficients
• 17/08/2020 – FY-3D HIRAS NSR and FSR coefficients with all variable trace gases including SO2
• 19/05/2020 – Metop-SG METImage coefficients updated with new spectral response data
• 14/05/2020 – new coefficients for Sentinel2-A/B MSI and DSCOVR EPIC
• 12/05/2020 – new v9predictor MTG-IRS coefficients with all trace gases (except SO2)
• 07/05/2020 – new Sentinel3-B OLCI coefficients
• 30/03/2020 – new coefficients for ESA Earth Explorer 9 mission FORUM
• 23/03/2020 – new coefficients for Sentinel3 MWR
• 26/02/2020 – new coefficients for GPM DPR replacing previous erroneous version
• 26/02/2020 – new coefficients for HY-2A MWRI replacing previous erroneous version
• 18/02/2020 – new coefficients for FY-4A GIIRS
• 17/12/2019 – updated coefficients for FY-3D HIRAS NSR and FSR
• 05/12/2019 – updated channel polarisations for Metop-SG MWS
• 05/12/2019 – modified sensor ID for HY-2A MWRI
• 05/12/2019 – new coefficients for Jason-CS AMR-C
• 26/11/2019 – new coefficients for Electro-L No2 MSU-GS
• 21/10/2019 – update Geo-Kompsat-2A coefficients with latest SRF data
• 16/10/2019 – new coefficients for old sensors on the Nimbus platforms created for Copernicus Climate Change Services: IRIS, HRIR, MRIR, SIRS
• 21/08/2019 – add MFASIS LUT files for MSG-1 and 2 SEVIRI
• 11/07/2019 – new coefficients for FY-3C VIRR
• 23/04/2019 – add NLTE coefficients to CrIS and CrIS FSR coefficient files
• 25/03/2019 – updates for v12.3 release: new HTFRTC static file enabling new features including additional trace gases, and new MFASIS LUT files for SEVIRI enabling the new water vapour correction for the 0.8um channel
• 06/03/2019 – fix in MERSI-2 coefficients: the file contained an extra channel (channel 4 was a duplicate of channel 3) which has been removed so that it now has 25 channels
• 11/12/2018 – new coefficients for FY-3D HIRAS
• 26/11/2018 – new coefficients for MERSI-2 and Metop-C AVHRR central wavenumbers and band correction coefficients updated with new information (optical depth coefficient values are unchanged)
• 31/10/2018 – MFASIS look-up tables (LUTs) for SEVIRI, GOES ABI and Himawari AHI available for download; see also associated v12.2 code update dated 30/10/2018
• 10/09/2018 – Metop-C AVHRR central wavenumbers and band correction coefficients updated with new information (optical depth coefficient values are unchanged)
• 05/09/2018 – CrIS-FSR instrument ID changed from 27 to 28 (see note below the hi-res IR sounder table on the coefficients web page
• 28/08/2018 – new Meteor-M N2 MSU-MR coefficients
• 13/08/2018 – update MTG-IRS coefficients using most recent apodisation function
• 10/08/2018 – new Metop-C AVHRR coefficients
• 10/08/2018 – updated ECOSTRESS coefficients with revised spectral responses
• 10/08/2018 – FY3-C and -D MWHS-2 and MWTS-2 coefficients updated due to wrong polarisations in some channels
• 12/07/2018 – new Sentinel3-B SLSTR coefficients
• 30/05/2018 – new FY4A AGRI coefficients
• 25/05/2018 – add Nimbus-4 IRIS “shifted” coefficient file (see note under the table of hyperspectral sounder coefficient files)
• 09/05/2018 – update IASI sccldcoef files to include the new cloud liquid water Deff optical properties
• 26/04/2018 – updated RTTOV-SCATT Mietable files using new CLW permittivity parameterisation and new Mietable file for ICI
• 20/04/2018 – new HTFRTC coefficients for a variety of hyperspectral IR sounders including MTG-IRS with light apodisation
• 17/04/2018 – new HY-2A MWRI coefficients
• 06/04/2018 – add new files for v12.2 release including new/updated PC-RTTOV, HTFRTC, MFASIS, and visible/IR sccldcoef files
• 13/02/2018 – add visible/IR sensor aerosol files containing optical properties for CAMS species
• 29/01/2018 – update satellite height in JPSS-0 (SNPP) and NOAA-20 ATMS coefficient files from 824 to 833km
• 11/12/2017 – add TROPICS coefficients
• 11/12/2017 – rename all Meteor-M N2 “IRFS2” coefficient files to “IKFS2”
• 06/12/2017 – new NOAA-20 ATMS coefficients
• 25/10/2017 – new NOAA-20 VIIRS coefficients
• 19/10/2017 – updated COMS MI coefficients with shifted WV channel, updated HIRS shifted coefficients for NOAA-6,7,8
• 26/09/2017 – all MW coefficient files updated with band-correction coefficients
• 15/09/2017 – update CLARREO-MRFIRS and TICFIRE-MBFIRI coefficients due to bug affecting IREMIS coefficients for channels in the range 34-38µm
• 24/08/2017 – add new GaoFen-5 VIMS coefficients
• 10/07/2017 – add new GEO-KOMPSAT-2 AMI coefficients and update ECOSTRESS coefficients with new SRF data
• 30/05/2017 – update all HIRS-shifted coefficients
• 18/05/2017 – add SMOS MIRAS and ORS COWVR coefficients
• 24/03/2017 – add FY2E/G VISSR coefficients
• 20/03/2017 – there was an error in the calculation of the IASI and IASI-NG variable SO2 coefficients. New files have been generated which give an improved fit to the line-by-line training data.
• 06/03/2017 – update CLARREO MRFIRS coefficients (there was a problem affecting channel 1), add IR-only coefficient files for GMS 1-4 imager and VIS+IR coefficient files for GMS 1-5 imager.
• 21/02/2017 – RTTOV v12.1 released with associated coefficient updates.

• 13/01/2017 – add INSAT-3DR imager and sounder and GCOM-C 1 SGLI coefficients (under IR instruments and VIS/IR instruments).
• 12/01/2017 – AATSR-shifted coefficients updated. The shift in the 12µm channel is now 40nm instead of 50nm (under IR instruments and VIS/IR instruments).
• 05/09/2016 – GOES-16 ABI and ISS ECOSTRESS coefficients updated with latest SRF data and add GOES 17-19 ABI coefficients (under IR instruments and VIS/IR instruments).
• 26/05/2016 – all non-zeeman MW coefficients updated due to bug fixes and improvements to line by line code – new Zeeman coefficients to follow (under MW instruments).
• 13/05/2016 – add Himawari-9 AHI coefficients (under IR instruments and VIS/IR instruments).
• 18/02/2016 – add Mietable files for MWS and MWI (under MW instruments).
• 20/01/2016 – add coefficients for INSAT3-D imager and sounder instruments (under IR instruments).
• 19/11/2015 – add coefficients for MWR instrument (under MW instruments).
• 17/11/2015 – add coefficients for ECOSTRESS instrument on the ISS (under IR instruments).
• 16/11/2015 – updates to v9 predictor coefficients for AVHRR on Metop and NOAA 15-18, VISSR on FY2-3 and 4, ASTER and VIIRS: non-solar channels are now only trained over the more limited range of zenith angles up to 65 degrees (under VIS/IR instruments).
• 08/10/2015 – new Sentinel-3 SLSTR coefficients with updated SRFs (under VIS/IR instruments and IR instruments).
• 25/09/2015 – new PC-RTTOV coefficients valid over all surface types for RTTOV v11.3 (under hi-res IR instruments).
• 25/09/2015 – all IR and MW v7/v8 predictor coefficients regenerated with bugs fixed in coefficient generation. (NB Work is underway to generate new Zeeman coefficients; the AMSU-A shifted coefficients are under review and have not been regenerated; v9 predictor and SSU coefficients are unaffected and have not been regenerated).
• 25/09/2015 – MODIS and FY-3 IRAS coefficients updated with some channels now being Planck-weighted (under VIS/IR instruments and IR instruments).
• 17/07/2015 – add Jason-2 AMR coefficients (under MW instruments).
• 10/07/2015 – add Nimbus-3 MRIR coefficients (under IR instruments).
• 09/07/2015 – add SSM/T2 coefficients (under MW instruments).
• 09/07/2015 – add MetopSG preliminary ICI coefficients (under MW instruments).
• 08/07/2015 – add MetopSG MetImage coefficients (under VIS/IR instruments and IR instruments).
• 03/07/2015 – add MetopSG MWI and MWS coefficients (under MW instruments).
• 24/06/2015 – Nimbus 4 IRIS coefficients updated with coefficients for full spectral range (under hires).
• 05/03/2015 – add F-19 SSMIS coefficient file (under MW instruments).
• 25/02/2015 – add CrIS full spectral resolution (FSR) coefficient files (under hi-res IR instruments).
• 15/01/2015 – add Meteor-M 2 MTVZA-GY coefficient file (under MW instruments).
• 05/12/2014 – add MSG-4 SEVIRI coefficient files (under VIS/IR instruments and IR instruments).
• 04/12/2014 – add link to script which can download all or any required coefficient files
• 02/09/2014 – updated ATSR/AATSR v9 predictor coefficient files (under VIS/IR instruments).
• 18/08/2014 – add NOAA 5-14 AVHRR v9 predictor coefficients (under VIS/IR instruments) and AATSR coefficients with shifted 12um channel (under VIS/IR instruments and IR instruments).
• 25/07/2014 – further correction to GMI Mietable file and addition of Windsat Mietable (under MW instruments).
• 18/07/2014 – added missing 1.6 micron channel to the NOAA-19 AVHRR VIS/IR v9 predictor coefficient file (under VIS/IR instruments).
• 03/07/2014 – correction to GMI Mietable file (under MW instruments).
• 02/07/2014 – start adding information on spectral response functions/pass-bands and comparisons against LBL simulations.
• 17/06/2014 – added FY3-C MWTS2, MWHS2 and MWRI coefficients (under MW instruments).
• 12/06/2014 – added EOS-1 ASTER coefficients (under IR and VIS/NIR/IR).
• 12/06/2014 – added v9 predictor (all trace gas) CrIS coefficients (under hi-res IR instruments).
• 12/06/2014 – updated AHI and FCI v7 predictor coefficients (under IR instruments).
• 12/06/2014 – updated ABI, AHI, FCI, MODIS, MODIS-shifted, OLI, SLSTR and VIIRS v9 predictor coefficients (under VIS/NIR/IR instruments).
• 07/05/2014 – begin keeping log of coefficient file histories. Where files have changed their entries in this log are linked from the “Date of file creation” in the tables below.
• 07/05/2014 – correction to NOAA-18/19 MHS coefficients (under MW instruments): the channel central wavenumbers and band corrections were mistakenly taken from the AMSU-B files.
• 27/02/2014 – updated GPM GMI coefficients with revised channel specification (under MW instruments).
• 21/02/2014 – added information about coefficient regression limits.
• 19/02/2014 – updated v9 predictor (all trace gas) coefficients for AIRS, IASI and IASI-NG based on LBLRTM v12.2 (under hires instruments).
• 13/02/2014 – added shifted AMSU-A coefficients (under MW instruments).
• 24/01/2014 – added GPM GMI coefficients (under MW instruments).
• 20/11/2013 – added MTG-FCI coefficients (under IR and VIS/NIR/IR).
• 15/11/2013 – added coefficients for Nimbus 4 IRIS (under hires), Landsat 8 OLI (under VIS/NIR/IR) and Nimbus 7 SMMR (under MW).
• 15/10/2013 – added new coefficients for IASI-NG, experimental coefficients for MTG-IRS, and v8 predictor coefficients with variable CO2 for AIRS, CrIS and IASI.
• 15/10/2013 – added notes on coefficient conversion and channel subset extraction.
• 07/10/2013 – added aerosol coefficients for HIRS and MODIS “shifted” rtcoef files (under IR instruments).
• 03/10/2013 – correction to Windsat coefficient file (under MW instruments): the sensor ID was incorrectly specified as “mw” instead of “po”.
• 10/09/2013 – updated Mie table files for MW instruments. See the notes below for a description of the changes.
• 10/09/2013 – added coefficient file for Landsat 8 TIRS in IR instruments.
• 01/08/2013 – the 101L v7 and v9 predictor hi-res sounder files including NLTE coefficients uploaded previously were incorrect and have now been updated.
• 19/06/2013 – NLTE coefficients added to the hi-res sounder files.