NOAA Polar Orbiter Data User's Guide

Section 1.4.6

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1.4.6 NOAA-10

Operational 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.

Table 1.4.6-1. NOAA-10 Central Wave Numbers for AVHRR IR Channels.
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.

Table 1.4.6-2. NOAA-10 TOVS Channel Spectral Response and HIRS/2 Thermal Band-Correction Coefficients.
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

Table 1.4.6-3. Non-linearity errors for NOAA-10 Channel 4.
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

Table 1.4.6-4. Corrected values for NOAA-10 Nsp.
Channel Nsp (mW/(m2-sr-cm-1))
3 0.0
4 0.0

Table 1.4.6-5. PRT coefficients for all instruments on NOAA-10 (from NESS 107, App. B).
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


Figure showing NOAA-10 spectral response curve for AVHRR Channel 1

Figure showing NOAA-10 spectral response curve for AVHRR Channel 2

Figure showing NOAA-10 spectral response curve for AVHRR Channel 3

Figure showing NOAA-10 spectral response curve for AVHRR Channel 4

Amended May 5, 1999



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