This file generated: 15/10/2019

The HRIR (High Resolution Infrared Radiometer) flew on the first three Nimbus satellites.
The HRIR on Nimbus 3 used a dual band-pass filter wich transmitted
0.7 to 1.3 microns radiations day time and 3.4 to 4.2 microns radiations night time.
Data is available from 17 April 1969 through 21 March 1970.

SRF digitized by Thomas Hall (t.w.hall@reading.ac.uk) July 2019.

For the RTTOV coefficients generation, the SRF has been split into 2 channels :
- channel 1 : 0.7 to 4.2 microns (solar channel)
- channel 2 : 3.3 to 4.2 microns (thermal channel)

Coefficients created for COPERNICUS CLIMATE CHANGE SERVICE (C3S 311c Lot 1 project).

Download all SRFs: rtcoef_nimbus_3_hrir_srf.tar.gz

Channel 01 Central wavenumber/wavelength: 5981.976 cm-1 / 1.672 microns Comment: 2, channel 2 SRF from file HRIR_N3_chan2.txt received July 2019 from Thomas Hall SRF data: rtcoef_nimbus_3_hrir_srf_ch01.txt SRF plot: rtcoef_nimbus_3_hrir_srf_ch01.png

Channel 02 Central wavenumber/wavelength: 2656.188 cm-1 / 3.765 microns Comment: 1, channel 1 SRF from file HRIR_N3_chan1.txt received July 2019 from Thomas Hall SRF data: rtcoef_nimbus_3_hrir_srf_ch02.txt SRF plot: rtcoef_nimbus_3_hrir_srf_ch02.png