NOAA Polar Orbiter Data User's GuideSection 1.4.5 |
Introduction Page,
NOAA POD Guide TOC,
Acronyms
Operational dates: February 25, 1985 - November 7, 1988
Afternoon orbit: 1420 LST ascending node, 0220 LST descending node
AVHRR instrument: 5 channels
Spacecraft ID: 7
Table 1.4.5-1 contains the central wave numbers for the AVHRR IR channels for NOAA-9. Table 1.4.5-2 contains the TOVS channel spectral response and HIRS/2 thermal band-correction coefficients for NOAA-9. Non-linearity errors for NOAA-9 AVHRR Channels 4 and 5 are contained in Table 1.4.5-3. Table 1.4.5-4 contains values of the corrected radiance of space, Nsp (which includes the non-linearity correction) for the NOAA-9 AVHRR IR channels.
Figures 1.4.5-1 through 1.4.5-5 contain the spectral response curves for NOAA-9 AVHRR channels 1 through 5, respectively.
| Temperature Range (K) | Channel 3 (cm-1) | Channel 4 (cm-1) | Channel 5 (cm-1) |
|---|---|---|---|
| 180-225 | 2670.93 | 928.50 | 844.41 |
| 225-275 | 2674.81 | 929.02 | 844.80 |
| 275-320 | 2678.11 | 929.46 | 845.19 |
| Instrument | Channel # | Central Wave # | Description | HIRS/2 Band-Correction Coefficients | |
|---|---|---|---|---|---|
| b | c | ||||
| HIRS/2 | 1 | 667.67 cm-1 | 15 micrometers | 0.034 | 0.99989 |
| 2 | 679.84 cm-1 | CO2 Band | 0.024 | 0.99991 | |
| 3 | 691.46 cm-1 | CO2 Band | 0.092 | 0.99975 | |
| 4 | 703.37 cm-1 | CO2 Band | 0.002 | 0.99993 | |
| 5 | 717.16 cm-1 | CO2 Band | 0.013 | 0.99991 | |
| 6 | 732.64 cm-1 | CO2 Band | -0.023 | 0.99997 | |
| 7 | 749.48 cm-1 | CO2 Band | -0.006 | 0.99995 | |
| 8 | 898.53 cm-1 | Window | 0.126 | 0.99969 | |
| 9 | 1031.61 cm-1 | Ozone | 0.187 | 0.99987 | |
| 10 | 1224.74 cm-1 | Water Vapor | 0.569 | 1.00010 | |
| 11 | 1365.12 cm-1 | Water Vapor | 0.033 | 0.99961 | |
| 12 | 1483.24 cm-1 | Water Vapor | 0.353 | 0.99911 | |
| 13 | 2189.97 cm-1 | 4.3 micrometers | -0.001 | 0.99980 | |
| 14 | 2209.18 cm-1 | CO2 Band | 0.007 | 0.99984 | |
| 15 | 2243.14 cm-1 | CO2 Band | 0.027 | 1.00003 | |
| 16 | 2276.46 cm-1 | CO2 Band | 0.099 | 1.00038 | |
| 17 | 2359.05 cm-1 | CO2 Band | 0.004 | 0.99977 | |
| 18 | 2518.14 cm-1 | Window | 0.084 | 1.00012 | |
| 19 | 2667.80 cm-1 | Window | 0.448 | 1.00040 | |
| 20 | 14549.27 cm-1 | Visible Window | n/a | n/a | |
| MSU | 1 | 1.6779 cm-1 | n/a | n/a | n/a |
| 2 | 1.7927 cm-1 | n/a | n/a | n/a | |
| 3 | 1.8334 cm-1 | n/a | n/a | n/a | |
| 4 | 1.9331 cm-1 | n/a | n/a | n/a | |
| SSU | 1 | 669.988 cm-1/15 mb | n/a | n/a | n/a |
| 2 | 669.628 cm-1/5 mb | n/a | n/a | n/a | |
| 3 | 669.357 cm-1/1.5 mb | n/a | n/a | n/a | |
| Target temperature (K) | Channel 4 Error (K) | Channel 5 Error (K) |
|---|---|---|
| 315 | 1.8 | 1.0 |
| 305 | 0.9 | 0.6 |
| 295 | 0.2 | 0.2 |
| 285 | -0.4 | -0.1 |
| 275 | -0.9 | -0.5 |
| 255 | -1.4 | -0.8 |
| 245 | -1.6 | -1.0 |
| 225 | -1.5 | -1.3 |
| 205 | -1.0 | -1.4 |
| Channel | Nsp (mW/(m2-sr-cm-1)) |
|---|---|
| 3 | 0.0 |
| 4 | -3.384 |
| 5 | -2.313 |
| AVHRR | |||||
|---|---|---|---|---|---|
| PRT counts to temperature coefficients | |||||
| PRT | a0 | a1 | a2 | a3 | a4 |
| 1 | 277.018 | 0.05128 | 0.0 | 0.0 | 0.0 |
| 2 | 276.750 | 0.05128 | 0.0 | 0.0 | 0.0 |
| 3 | 276.862 | 0.05128 | 0.0 | 0.0 | 0.0 |
| 4 | 276.546 | 0.05128 | 0.0 | 0.0 | 0.0 |
| PRT weighting factors | |||||
| b1 | b2 | b3 | b4 | ||
| 0.25 | 0.25 | 0.25 | 0.25 | ||
| Radiance of space (Nsp) including nonlinearity correction | |||||
| Channel | Nsp(mW/sr-m2-cm-1) | ||||
| 3 | 0.0 | ||||
| 4 | -3.384 | ||||
| 5 | -2.313 | ||||
| HIRS | |||||
| IWT PRT Count to temperature coefficients | |||||
| PRT | a0 | a1 | a2 | a3 | a4 |
| 1 | 301.38 | 6.5225E-03 | 8.6282E-08 | 4.8144E-11 | 0.0 |
| 2 | 301.37 | 6.5193E-03 | 8.5968E-08 | 4.8101E-11 | 0.0 |
| 3 | 301.38 | 6.5245E-03 | 8.6193E-08 | 4.8146E-11 | 0.0 |
| 4 | 301.37 | 6.5196E-03 | 8.5893E-08 | 4.8105E-11 | 0.0 |
| SSU | |||||
| PRT count to temperature coefficients | |||||
| a0 | a1 | a2 | |||
| 284.249 | 4.889 x 10-3 | 2.6 x 10-9 | |||
| Thermistor to temperature coefficients | |||||
| b0 | b1 | b2 | b3 | ||
| 375.969 | -203.161 | 179.13 | -85.16 | ||
| c0 | c1 | c2 | c3 | ||
| 375.969 | -203.161 | 179.13 | -85.16 | ||
| MSU | |||||
| PRT Count to resistance coefficients | |||||
| K0 | 495.6 | ||||
| K1 | 107.8 | ||||
| PRT Resistance to temperature coefficients | |||||
| e0 | e1 | e2 | |||
| 1A | 29.4294 | .4283514 | .3223351E-04 | ||
| 2A | 29.2639 | .4338180 | .3334592E-04 | ||
| 1B | 29.5416 | .4248521 | .3188156E-04 | ||
| 2B | 29.5778 | .4243732 | .3264424E-04 | ||
| Radiance of space (Nsp) | |||||
| Channel | Nsp( mW/sr- m2 - cm-1) | ||||
| 1 | 0.000086 | ||||
| 2 | 0.000096 | ||||
| 3 | 0.000084 | ||||
| 4 | 0.000092 | ||||





| Previous Section | Top of Page | Next Section |