This file generated: 15/10/2019

README SRF:

README file for MSG-4 SEVIRI filter functions
Dec 2014

Reference file: MSG_SEVIRI_Spectral_Response_Characterisation.XLS
   this file is available from the following web page:
      http://www.eumetsat.int/website/home/Data/Products/Calibration/MSGCalibration/index.html?lang=EN
   issue 2 on 30/10/2012 by GEO/GF: Inclusion of MSG-4 spectral data
   internal Eumetsat reference: MSG-MMT-SE-TN-3325

The spectral response function of the HRV channel is taken from the extended range.
The IR channels spectral response functions are taken from the 95K instrument temperature

Excel sheets are converted to ASCII text files
Wavelenghts are converted to wavenumbers
All original values are kept, except for HRV where values below 392 nanometers are removed
  this is requested for LBLRTM runs and has very minor no impact as the values are very small
  Removed values 390nm: 0.07, 384nm: 0.037, 378nm: 0.009 and (10^-13) below 372 nm

For IR channels, the central frequencies and band corrections are given by the EUMETSAT document
  The conversion from effective radiances to equivalent brightness temperatures
  PDF_EFFECT_RAD_TO_BRIGHTNESS.pdf (EUM/MET/TEN/11/0569 version 1; 5 Oct 2012)

README file for MSG-4 SEVIRI filter functions
Dec 2014

Reference file: MSG_SEVIRI_Spectral_Response_Characterisation.XLS
   this file is available from the following web page:
      http://www.eumetsat.int/website/home/Data/Products/Calibration/MSGCalibration/index.html?lang=EN
   issue 2 on 30/10/2012 by GEO/GF: Inclusion of MSG-4 spectral data
   internal Eumetsat reference: MSG-MMT-SE-TN-3325

The spectral response function of the HRV channel is taken from the extended range.
The IR channels spectral response functions are taken from the 95K instrument temperature

Excel sheets are converted to ASCII text files
Wavelenghts are converted to wavenumbers
All original values are kept, except for HRV where values below 377 nanometers are removed
  this is requested for LBLRTM runs and has no impact as the values are very small (10^-13)

For IR channels, the central frequencies and band corrections are given by the EUMETSAT document
  The conversion from effective radiances to equivalent brightness temperatures
  PDF_EFFECT_RAD_TO_BRIGHTNESS.pdf (EUM/MET/TEN/11/0569 version 1; 5 Oct 2012)

Download all SRFs: rtcoef_msg_4_seviri_srf.tar.gz

Channel 01
Central wavenumber/wavelength: 15689.097 cm-1 / 0.637 microns
Comment: 1, FM4 VIS0.6 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch01.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch01.png

Channel 02
Central wavenumber/wavelength: 12390.586 cm-1 / 0.807 microns
Comment: 2, FM4 VIS0.8 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch02.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch02.png

Channel 03
Central wavenumber/wavelength: 6113.763 cm-1 / 1.636 microns
Comment: 3, FM4 NIR1.6 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch03.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch03.png

Channel 04
Central wavenumber/wavelength: 2555.280 cm-1 / 3.913 microns
Comment: 1, FM4 IR3.9 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch04.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch04.png

Channel 05
Central wavenumber/wavelength: 1596.080 cm-1 / 6.265 microns
Comment: 2, FM4 IR6.2 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch05.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch05.png

Channel 06
Central wavenumber/wavelength: 1361.748 cm-1 / 7.344 microns
Comment: 3, FM4 IR7.3 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch06.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch06.png

Channel 07
Central wavenumber/wavelength: 1147.433 cm-1 / 8.715 microns
Comment: 4, FM4 IR8.7 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch07.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch07.png

Channel 08
Central wavenumber/wavelength: 1034.851 cm-1 / 9.663 microns
Comment: 5, FM4 IR9.7 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch08.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch08.png

Channel 09
Central wavenumber/wavelength: 931.122 cm-1 / 10.740 microns
Comment: 6, FM4 IR10.8 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch09.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch09.png

Channel 10
Central wavenumber/wavelength: 839.113 cm-1 / 11.917 microns
Comment: 7, FM4 IR12.0 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch10.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch10.png

Channel 11
Central wavenumber/wavelength: 748.585 cm-1 / 13.359 microns
Comment: 8, FM4 IR13.4 SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch11.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch11.png

Channel 12
Central wavenumber/wavelength: 16334.856 cm-1 / 0.612 microns
Comment: 4, FM4 Extended HRV SRF extracted from MSG_SEVIRI_Spectral_Response_Characterisation.XLS (issue 2, Oct 2012)
SRF data: rtcoef_msg_4_seviri_srf_ch12.txt
SRF plot: rtcoef_msg_4_seviri_srf_ch12.png