NOAA Polar Orbiter Data User's GuideSection 1.4.6 |
Introduction Page, NOAA POD Guide TOC, AcronymsOperational dates: Nov. 17, 1986 to Sept. 16, 1991
Morning orbit: 1930 LST ascending node, 0730 LST descending node
AVHRR instrument: 4 channels
Spacecraft ID: 8
Abnormalities: Last ERBE instrument; no SSU and SBUV instruments flown. HIRS/2 instrument had a problem with filter wheel which was corrected with a software patch. The TOVS data became operational Dec. 16, 1986. The AVHRR has a northern latitude ascending spacelook apparent sunlight intrusion that affects the channel 3 space look and calibration for brief periods.
Table 1.4.6-1 contains the central wave numbers for the AVHRR IR channels for NOAA-10. Table 1.4.6-2 contains the TOVS channel spectral response and HIRS/2 thermal band-correction coefficients for NOAA-10. Non-linearity corrections for NOAA-10 AVHRR Channel 4 are contained in Table 1.4.6-3. The non-linearity corrections are the difference between the measured target temperature and that temperature derived from a two-point linear calibration using a radiance of space of zero. Table 1.4.6-4 contains values of the corrected radiance of space, Nsp (which includes the non-linearity correction) for NOAA-10 AVHRR Channel 4.
Figures 1.4.6-1 through 1.4.6-4 contain the spectral response curves for NOAA-10 AVHRR channels 1 through 4.
| Temperature Range (K) | Channel 3 (cm-1) | Channel 4 (cm-1) |
|---|---|---|
| 180-225 | 2658.53 | 908.73 |
| 225-275 | 2657.60 | 909.18 |
| 275-320 | 2660.76 | 909.58 |
| 270-310 | 2660.35 | 909.52 |
| Note: The 270-310 K range is applicable for sea surface temperatures. | ||
| Instrument | Channel # | Central Wave # | Description | HIRS/2 Band-Correction Coefficients | |
|---|---|---|---|---|---|
| b | c | ||||
| HIRS/2 | 1 | 667.70 cm-1 | 15 micrometers | 0.033 | 0.99989 |
| 2 | 680.23 cm-1 | CO2 Band | 0.018 | 0.99992 | |
| 3 | 691.15 cm-1 | CO2 Band | -0.006 | 0.99994 | |
| 4 | 704.33 cm-1 | CO2 Band | -0.002 | 0.99994 | |
| 5 | 716.30 cm-1 | CO2 Band | -0.064 | 1.00007 | |
| 6 | 733.13 cm-1 | CO2 Band | 0.065 | 0.99980 | |
| 7 | 750.72 cm-1 | CO2 Band | 0.073 | 0.99979 | |
| 8 | 899.50 cm-1 | Window | 0.218 | 0.99957 | |
| 9 | 1029.01 cm-1 | Ozone | 0.195 | 0.99987 | |
| 10 | 1224.07 cm-1 | Water Vapor | 0.327 | 0.99965 | |
| 11 | 1363.32 cm-1 | Water Vapor | 0.046 | 0.99963 | |
| 12 | 1489.42 cm-1 | Water Vapor | 0.645 | 1.00064 | |
| 13 | 2191.38 cm-1 | 4.3 micrometers | 0.072 | 1.00036 | |
| 14 | 2208.74 cm-1 | CO2 Band | 0.079 | 1.00045 | |
| 15 | 2237.49 cm-1 | CO2 Band | -0.026 | 0.99947 | |
| 16 | 2269.09 cm-1 | CO2 Band | 0.041 | 1.00019 | |
| 17 | 2360.00 cm-1 | CO2 Band | 0.040 | 1.00019 | |
| 18 | 2514.58 cm-1 | Window | 0.098 | 1.00025 | |
| 19 | 2665.38 cm-1 | Window | 0.462 | 1.00067 | |
| 20 | 14453.14 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 | Instrument not flown on NOAA-10 | ||||
| Target temperature (K) | Internal Target Temperature (Degrees C) | ||
|---|---|---|---|
| 10 | 15 | 20 | |
| 320 | 3.50 | 2.83 | 2.54 |
| 315 | 2.93 | 2.19 | 1.97 |
| 305 | 1.88 | 1.34 | 1.11 |
| 295 | 1.12 | 0.57 | 0.12 |
| 285 | 0.20 | -0.15 | -0.38 |
| 275 | -0.46 | -0.53 | -1.08 |
| 265 | -0.76 | -0.93 | -1.37 |
| 255 | -1.33 | -1.49 | -1.77 |
| 245 | -1.74 | -2.09 | -2.26 |
| 235 | -1.79 | -2.20 | -2.53 |
| 225 | -2.22 | -2.51 | -2.53 |
| 215 | -2.58 | -2.65 | -2.80 |
| 205 | -2.47 | -2.88 | -3.27 |
| Channel | Nsp (mW/(m2-sr-cm-1)) |
|---|---|
| 3 | 0.0 |
| 4 | 0.0 |
| AVHRR | |||||
|---|---|---|---|---|---|
| PRT counts to temperature coefficients | |||||
| PRT | a0 | a1 | a2 | a3 | a4 |
| 1 | 276.659 | 0.051275 | 1.363E-6 | 0.0 | 0.0 |
| 2 | 276.659 | 0.051275 | 1.363E-6 | 0.0 | 0.0 |
| 3 | 276.659 | 0.051275 | 1.363E-6 | 0.0 | 0.0 |
| 4 | 276.659 | 0.051275 | 1.363E-6 | 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 | 0.0 | ||||
| HIRS | |||||
| IWT PRT Count to temperature coefficients | |||||
| PRT | a0 | a1 | a2 | a3 | a4 |
| 1 | 301.38 | 6.5216E-03 | 8.6344E-08 | 4.8114E-11 | 0.0 |
| 2 | 301.38 | 6.5161E-03 | 8.5966E-08 | 4.8042E-11 | 0.0 |
| 3 | 301.38 | 6.5207E-03 | 8.6131E-08 | 4.8083E-11 | 0.0 |
| 4 | 301.38 | 6.5197E-03 | 8.6161E-08 | 4.8073E-11 | 0.0 |
| SSU - NOAA-10 has a dummy SSU | |||||
| MSU | |||||
| PRT Count to resistance coefficients | |||||
| K0 | 495.6 | ||||
| K1 | 107.8 | ||||
| PRT Resistance to temperature coefficients | |||||
| e0 | e1 | e2 | |||
| 1A | 29.2589 | .4245799 | .3169871E-04 | ||
| 2A | 29.4633 | .4250778 | .3192864E-04 | ||
| 1B | 29.2350 | .4289328 | .3232162E-04 | ||
| 2B | 29.4680 | .4275379 | .3221571E-04 | ||
| Radiance of space (Nsp) | |||||
| Channel | Nsp( mW/sr- m2 - cm-1) | ||||
| 1 | 0.000086 | ||||
| 2 | 0.000096 | ||||
| 3 | 0.000084 | ||||
| 4 | 0.000092 | ||||
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