RTTOV Coefficient File Update History

Update History

  • 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 12┬Ám 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.