13/12/2024 – all MHS coefficients updated with corrected pass band specifications, and SMOS/MIRAS coefficients updated with Stokes3/4 channels added
06/12/2024 – new MFASIS-NN coefficients for FY-4B AGRI
02/12/2024 – updated coefficients for MTG-IRS based on revised channel specification (as of summer 2024). New Hamming Apodisation On Top Of Light Apodisation (HAOTOLA) coefficients replace the previous Hamming apodised coefficients. NLTE coefficients updated for HAOTOLA SRF with NLTE bug fix applied.
02/12/2024 – IASI-NG coefficients updated with broader SRF and are now NLTE-enabled for relevant channels.
02/12/2024 – IASI coefficients updated with corrected NLTE coefficients after bug fix (only affects NLTE simulations)
15/11/2024 – new coefficients for MODIS based on collection 7 SRF shifts
05/11/2024 – new coefficients for Microsat-2C (EOS-8) EOIR and updated coefficients for NASA SBG
11/07/2024 – updated/new NLTE coefficients for: IASI (updated, now based on LBLRTM v12.8), MTG-IRS Hamming apodised (new, based on LBLRTM v12.8), AIRS (new, based on LBLRTM 12.2)
01/07/2024 – new coefficients for AWS EPS-Sterna PFM based on measured SRFs
26/04/2024 – new coefficients for AIRS L1C (variable O3 and O3+CO2)
12/03/2024 – new coefficients for Jiheng-1
27/02/2024 – updated coefficients for MetopSG MWI based on updated passband data
23/02/2024 – hydrotable for MetopSG MWI corrected
23/02/2024 – new coefficients for FY-3G MWRI-RM, PMR
12/02/2024 – new coefficients for FY-3F MWHS-2, MWRI-2, MWTS-3
11/01/2024 – new coefficients for FY-3F MERSI-3, FY-3G MERSI-RM, INSAT-3DS sounder
30/11/2023 – new coefficients for FY-4B GIIRS
18/09/2023 – new coefficients for INSAT-3DS imager
25/08/2023 – updated coefficients for NOAA-21 ATMS based on updated SRF data
01/08/2023 – new MFASIS LUT files for MTG-1 FCI
03/07/2023 – new coefficients for Landsat-9 TIRS and OLI, and CO2M-A CLIM
16/05/2023 – fix errors in updated TROPICS Pathfinder coefficients and new coefficients for Microsat2b MHS based on SRFs
17/04/2023 – new coefficients for DMSP SSM/T
05/04/2023 – new coefficients for WSF-M MWI
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-4B 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
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
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.
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).
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).
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).
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.
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.
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.