HIRS | IASI | |
Spectral Coverage | 19 IR channels (670cm-1 ~ 2663cm-1) | 8461 channels (546 cm-1 ~ 2760cm-1) |
Instantaneous Field of view | 0.70, 10km at nadir | 0.80, 12km at nadir |
Scan rate | 6.4 seconds | 8 seconds |
Cross-track scan coverage | ±49.50, 56 footprints per scan-line | Spectral Calibration: Atmospheric spectral feature Radiometric Cal: Space-view, blackbody |
CH | Blackbody Bias (K) | SRF shift (cm-1) | Optimal Non-lin. Term Value (E-8) |
4 | 0.142 | -0.13 | 7.396 |
5 | 0.142 | 0.09 | 5.884 |
6 | 0.142 | N/A | 4.581 |
7 | 0.142 | -0.15 | 4.913 |
8 | 0.142 | N/A | 6.767 |