NOAA Polar Orbiter Data User's GuideSection 1.4.7 |
Introduction Page, NOAA POD Guide TOC, AcronymsOperational dates: November 8, 1988 to April 11, 1995
Afternoon orbit: 1340 LST ascending node, 0140 LST descending node
AVHRR instrument: 5 channels
Spacecraft ID: 1 (same as TIROS-N)
Abnormalities: AVHRR instrument failed on Sept. 13, 1994.
Table 1.4.7-1 contains the central wave numbers for the AVHRR IR channels for NOAA-11. Table 1.4.7-2 contains the TOVS channel spectral response and HIRS/2 thermal band-correction coefficients for NOAA-11. Non-linearity corrections for NOAA-11 AVHRR Channel 4 and 5 are contained in Tables 1.4.7-3 and 1.4.7- 4, respectively. 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 (Nsp) of zero. The non-linearity correction can be obtained from Tables 1.4.7-3 and 1.4.7-4 by interpolation on the scene temperatures and the temperatures of the AVHRR's internal calibration target.
Figures 1.4.7-1 through 1.4.7-5 contain the spectral response curves for NOAA-11 AVHRR channels 1 through 5, respectively.
| Temperature Range (K) | Channel 3 (cm-1) | Channel 4 (cm-1) | Channel 5 (cm-1) |
|---|---|---|---|
| 180-225 | 2663.50 | 926.81 | 841.40 |
| 225-275 | 2668.15 | 927.36 | 841.81 |
| 275-320 | 2671.40 | 927.83 | 842.20 |
| 270-310 | 2670.96 | 927.75 | 842.14 |
| 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 | 668.99 cm-1 | 15 micrometers | 0.007 | 0.99996 |
| 2 | 678.89 cm-1 | CO2 Band | 0.010 | 0.99994 | |
| 3 | 689.70 cm-1 | CO2 Band | 0.007 | 0.99992 | |
| 4 | 703.25 cm-1 | CO2 Band | -0.003 | 0.99995 | |
| 5 | 716.83 cm-1 | CO2 Band | 0.014 | 0.99991 | |
| 6 | 732.11 cm-1 | CO2 Band | 0.019 | 0.99991 | |
| 7 | 749.48 cm-1 | CO2 Band | 0.032 | 0.99988 | |
| 8 | 900.51 cm-1 | Window | 0.077 | 0.99988 | |
| 9 | 1031.19 cm-1 | Ozone | 0.068 | 0.99975 | |
| 10 | 795.69 cm-1 | Water Vapor | -0.001 | 0.99994 | |
| 11 | 1361.10 cm-1 | Water Vapor | 0.074 | 0.99972 | |
| 12 | 1479.86 cm-1 | Water Vapor | 0.288 | 0.99994 | |
| 13 | 2189.94 cm-1 | 4.3 micrometers | 0.022 | 0.99994 | |
| 14 | 2209.66 cm-1 | CO2 Band | 0.018 | 0.99995 | |
| 15 | 2239.26 cm-1 | CO2 Band | 0.020 | 0.99995 | |
| 16 | 2267.80 cm-1 | CO2 Band | 0.015 | 0.99993 | |
| 17 | 2416.32 cm-1 | CO2 Band | 0.024 | 0.99991 | |
| 18 | 2511.83 cm-1 | Window | 0.045 | 0.99990 | |
| 19 | 2664.07 cm-1 | Window | 0.325 | 0.99949 | |
| 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 | 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) | Internal Target Temperature (Degrees C) | ||
|---|---|---|---|
| 10 | 15 | 20 | |
| 320 | 4.29 | 3.71 | 3.25 |
| 315 | 3.50 | 2.98 | 2.55 |
| 310 | 2.85 | 2.33 | 1.91 |
| 305 | 2.23 | 1.73 | 1.32 |
| 295 | 1.05 | 0.68 | 0.22 |
| 285 | 0.24 | -0.21 | -0.67 |
| 275 | -0.45 | -0.79 | -1.15 |
| 265 | -1.06 | -1.37 | -1.66 |
| 255 | -1.41 | -1.72 | -2.03 |
| 245 | -1.70 | -1.96 | -2.22 |
| 235 | -1.87 | -2.10 | -2.28 |
| 225 | -1.90 | -2.14 | -2.36 |
| 215 | -1.82 | -2.02 | -2.20 |
| 205 | -1.54 | -1.76 | -1.98 |
| Target temperature (K) | Internal Target Temperature (Degrees C) | ||
|---|---|---|---|
| 10 | 15 | 20 | |
| 320 | 1.43 | 1.26 | 1.12 |
| 315 | 1.23 | 1.03 | 0.89 |
| 310 | 1.05 | 0.84 | 0.70 |
| 305 | 0.85 | 0.64 | 0.47 |
| 295 | 0.43 | 0.28 | 0.09 |
| 285 | 0.07 | -0.07 | -0.23 |
| 275 | -0.19 | -0.34 | -0.47 |
| 265 | -0.37 | -0.51 | -0.60 |
| 255 | -0.60 | -0.77 | -0.78 |
| 245 | -0.72 | -0.90 | -0.92 |
| 235 | -0.84 | -1.02 | -1.00 |
| 225 | -0.94 | -1.06 | -1.16 |
| 215 | -1.12 | -1.24 | -1.16 |
| 205 | -1.15 | -1.27 | -1.23 |
| AVHRR | |||||
|---|---|---|---|---|---|
| PRT counts to temperature coefficients | |||||
| PRT | a0 | a1 | a2 | a3 | a4 |
| 1 | 276.597 | 0.051275 | 1.363E-6 | 0.0 | 0.0 |
| 2 | 276.597 | 0.051275 | 1.363E-6 | 0.0 | 0.0 |
| 3 | 276.597 | 0.051275 | 1.363E-6 | 0.0 | 0.0 |
| 4 | 276.597 | 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 | ||||
| 5 | 0.0 | ||||
| HIRS | |||||
| IWT PRT Count to temperature coefficients | |||||
| PRT | a0 | a1 | a2 | a3 | a4 |
| 1 | 301.37210 | 6.52057E-03 | 9.05197E-08 | 4.73741E-11 | 8.29062E-16 |
| 2 | 301.37560 | 6.52283E-03 | 9.13565E-08 | 4.73871E-11 | 7.86019E-16 |
| 3 | 301.41250 | 6.51819E-03 | 9.18444E-08 | 4.75139E-11 | 7.30508E-16 |
| 4 | 301.37420 | 6.51875E-03 | 9.04524E-08 | 4.72894E-11 | 8.06020E-16 |
| SSU | |||||
| PRT count to temperature coefficients | |||||
| a0 | a1 | a2 | |||
| 283.901 | 5.044E-03 | 1.18E-11 | |||
| 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 | 29.1014 | .4242637 | .3162073E-04 | ||
| 2A | 28.9481 | .4277704 | .3185110E-04 | ||
| 1B | 28.9854 | .4269018 | .3170732E-04 | ||
| 2B | 29.0424 | .4274570 | .3191209E-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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