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NOAA KLM User's Guide

Appendix D.4
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D.4 NOAA-18 (N)

Launch date: May 20, 2005

Operational dates: August 30, 2005 - present

Afternoon orbit: 1400 LST ascending node, 0200 LST descending node

AVHRR instrument: 6 channels (AVHRR/3)

Spacecraft ID (PACS): 7

  • AVHRR: 13
  • TIP 1 (TIP side 1): 13
  • TIP 2 (TIP side 2): 14

    • Abnormalities:

    Up to date information regarding abnormalities on the POES spacecraft and instruments can be found at: http://www.oso.noaa.gov/poesstatus/. This website allows a user to search and sort on any POES spacecraft, subsystem or instrument status. Once a user narrows down their window of interest, further details can be obtained by going to the NOAA/NESDIS/Office of Satellite Operations' (OSO) archive of weekly status reports at: http://noaasis.noaa.gov/NOAASIS/ml/podocs.html.

    AVHRR:

    Table D.4-1 contains the PRT weighting factors for NOAA-18 and Table D.4-2 contains the radiance of space and the coefficients for nonlinear radiance correction quadratic for NOAA-18.

    Table D.4-1. NOAA-18 PRT Weighting Factors.
    b1 b2 b3 b4
    0.25 0.25 0.25 0.25

    Table D.4-2. NOAA-18 Radiance of Space and coefficients for nonlinear radiance correction quadratic.
      NS b0 b1 b2
    Channel 4 -5.53 5.82 -0.11069 0.00052337
    Channel 5 -2.22 2.67 -0.04360 0.00017715

    Table D.4-3 contains NOAA-18 coefficients d0, d1, d2, d3 and d4 that relate temperature, TPRT (Kelvin) of each PRT to count value, CPRT, by the equation:

    T sub {PRT} = d sub 0 + d sub 1 times C sub {PRT} + d sub 2 times C sub {PRT}^2 + d sub 3 times C sub (PRT)^3 + d sub 4 times C sub (PRT)^4

    Table D.4-3. NOAA-18 AVHRR/3 conversion coefficients.
    PRT d0 d1 d2 d3 d4
    1 276.601 0.05090 1.657 E-06 0 0
    2 276.683 0.05101 1.482 E-06 0 0
    3 276.565 0.05117 1.313 E-06 0 0
    4 276.615 0.05103 1.484 E-06 0 0

    Table D.4-4 contains the pre-launch calibration coefficients (albedo representation) for the AVHRR/3 instrument on NOAA-18.

    Table D.4-4. NOAA-18 AVHRR/3 pre-launch calibration coefficients (albedo representation).
    Channel # Contents Slope Intercept
    1 Low albedo range (0-25%) 0.05400 -2.130
    High albedo range (26 - 100%) 0.16100 -55.37
    2 Low albedo range (0-25%) 0.05290 -2.084
    High albedo range (26 - 100%) 0.15873 -55.31
    3A Low albedo range (0-12.5%) 0.02618 -0.982
    High albedo range (12.6 - 100%) 0.18492 -80.88
    Note: The albedo ranges given in parentheses are nominal; the points of intersection of the two regression lines are located at 500.54, 500.40, and 500.56 counts for channels 1,2, and 3A respectively. This information is based on the data in AVHRR S/N A306 Alignment/Calibration Handbook (Report 8172845, Rev B), January 2002.

    Table D.4-5 contains a summary of the spectral response data as a function of wavenumber for all channels of the NOAA-18 AVHRR/3.

    Table D.4-5. Summary of NOAA-18 AVHRR spectral response data (as a function of wavenumber) for each channel.
    Channel 1
    The peak wavenumber was at 15701.18 and had a value of 0.81.
    File starting point is at wavenumber =12714.03.
    File ending point is at wavenumber = 19620.54
    Moment Center Wavenumber = 15941.6541
    Percent line at which curve crosses Wavenumber (cm-1) μm
    0.10% 14089.7734 0.7097
    1.00% 14457.1582 0.6917
    5.00% 14553.6104 0.6871
    10.00% 14632.5156 0.6834
    20.00% 14677.5566 0.6813
    50.00% 14744.2832 0.6782
    80.00% 14785.3281 0.6763
    80.00% 16966.7227 0.5894
    50.00% 17139.9453 0.5834
    20.00% 17301.6289 0.5780
    10.00% 17368.2383 0.5758
    5.00% 17435.7070 0.5735
    1.00% 17589.3066 0.5685
    Area Point Limits Lower (cm-1) Upper (cm-1)
    99% 14467.2768 17670.4722
    96% 14666.7269 16958.4975
    70% 15012.3942 16690.8667
    50% 15271.5236 15744.4590
    0% (area center) 16439.5047 15744.4590
    Crossing Lower (cm-1) Upper (cm-1) Width (cm-1) Center (cm-1)
    80% 14785.3281 16966.7227 2181.3945 15876.0254
    50% 14744.2832 17139.9453 2395.6621 15942.1143
    20% 14677.5566 17301.6289 2624.0723 15989.5928
    5% 14553.6104 17435.7070 2882.0967 15994.6582
    Channel 2
    The peak wavenumber was at 11684.97 and had a value of 0.91
    File starting point is at wavenumber = 7092.20
    File ending point is at wavenumber = 20000.00
    Moment Center Wavenumber = 11988.0283
    Percent line at which curve crosses Wavenumber (cm-1) μm
    0.10% 9818.8145 1.0185
    1.00% 9886.4424 1.0115
    5.00% 9947.6836 1.0053
    10.00% 9973.0430 1.0027
    20.00% 9998.5127 1.0001
    50.00% 10038.6396 0.9962
    80.00% 10081.3926 0.9919
    80.00% 13710.9160 0.7293
    50.00% 13966.1904 0.7160
    20.00% 14168.7910 0.7058
    10.00% 14257.7217 0.7014
    5.00% 14327.4346 0.6980
    1.00% 14470.6230 0.6911
    0.10% 14623.8984 0.6838
    Area Point Limits Lower (cm-1) Upper (cm-1)
    99% 10015.8719 14147.8789
    96% 10093.8178 13962.6042
    70% 10604.1633 13304.1368
    50% 10985.5068 12906.3968
    0% (area center) 11944.4640 11944.4640
    Crossing Lower (cm-1) Upper (cm-1) Width (cm-1) Center (cm-1)
    80% 10081.3926 13710.9160 3629.5234 11896.1543
    50% 10038.6396 13966.1904 3927.5508 12002.4150
    20% 9998.5127 14168.7910 4170.2783 12083.6523
    5% 9947.6836 14327.4346 4379.7510 12137.5586
    Channel 3A
    The peak wavenumber was at 6158.01 and had a value of 0.82
    File starting point is at wavenumber = 5780.35
    File ending point is at wavenumber = 6711.41
    Moment Center Wavenumber = 6225.4721
    Percent line at which curve crosses Wavenumber (cm-1) μm
    0.10% 6008.3208 1.6644
    1.00% 6056.2271 1.6512
    5.00% 6087.3457 1.6428
    10.00% 6098.4351 1.6398
    20.00% 6109.2563 1.6369
    50.00% 6124.6333 1.6328
    80.00% 6137.1987 1.6294
    80.00% 6312.1401 1.5842
    50.00% 6328.3516 1.5802
    20.00% 6345.6738 1.5759
    10.00% 6356.4141 1.5732
    5.00% 6369.1279 1.5701
    1.00% 6397.9434 1.5630
    0.10% 6453.6514 1.5495
    Area Point Limits Lower (cm-1) Upper (cm-1)
    99% 6082.8294 6363.4179
    96% 6107.7351 6339.2353
    70% 6147.3047 6295.9093
    50% 6167.1275 6273.7096
    0% (area center) 6219.6270 6219.6270
    Crossing Lower (cm-1) Upper (cm-1) Width (cm-1) Center (cm-1)
    80% 6137.1987 6312.1401 174.9414 6224.6694
    50% 6124.6333 6328.3516 203.7183 6226.4922
    20% 6109.2563 6345.6738 236.4175 6227.4648
    5% 6087.3457 6369.1279 281.7822 6228.2368
    Channel 3B
    The peak wavenumber was at 2674.00 and had a value of 0.93
    File starting point is at wavenumber = 2222.00
    File ending point is at wavenumber = 3356.00
    Moment Center Wavenumber = 2663.5665
    Percent line at which curve crosses Wavenumber (cm-1) μm
    0.10% 2451.9922 4.0783
    1.00% 2474.3142 4.0415
    5.00% 2500.1025 3.9998
    10.00% 2507.6941 3.9877
    20.00% 2515.6975 3.9750
    50.00% 2528.6841 3.9546
    80.00% 2539.9021 3.9372
    80.00% 2779.7910 3.5974
    50.00% 2795.4414 3.5773
    20.00% 2813.4771 3.5543
    10.00% 2826.0476 3.5385
    5.00% 2840.7441 3.5202
    1.00% 2881.5820 3.4703
    0.10% 2930.8359 3.4120
    Area Point Limits Lower (cm-1) Upper (cm-1)
    99% 2505.5415 2839.0646
    96% 2524.0561 2807.4954
    70% 2566.4555 2757.2934
    50% 2594.7136 2729.7172
    0% (area center) 2662.1654 2662.1654
    Crossing Lower (cm-1) Upper (cm-1) Width (cm-1) Center (cm-1)
    80% 2539.9021 2779.7910 239.8889 2659.8467
    50% 2528.6841 2795.4414 266.7573 2662.0627
    20% 2515.6975 2813.4771 297.7795 2664.5874
    5% 2500.1025 2840.7441 340.6416 2670.4233
    Channel 4
    The peak wavenumber was at 939.00 and had a value of 0.91
    File starting point is at wavenumber = 788.00
    File ending point is at wavenumber = 5000.00
    Moment Center Wavenumber = 927.0246
    Percent line at which curve crosses Wavenumber (cm-1) μm
    0.10% 844.1467 11.8463
    1.00% 862.2675 11.5973
    5.00% 872.0961 11.4666
    10.00% 875.3697 11.4237
    20.00% 878.8188 11.3789
    50.00% 884.8935 11.3008
    80.00% 890.8615 11.2251
    80.00% 966.4460 10.3472
    50.00% 972.7415 10.2802
    20.00% 979.3073 10.2113
    10.00% 982.9404 10.1736
    5.00% 986.2397 10.1395
    1.00% 993.7721 10.0627
    0.10% 1000.7292 9.9927
    Area Point Limits Lower (cm-1) Upper (cm-1)
    99% 625.2569 983.7659
    96% 877.9976 975.7423
    70% 896.0601 959.0131
    50% 905.1626 949.9709
    0% (area center) 927.8059 927.8059
    Crossing Lower (cm-1) Upper (cm-1) Width (cm-1) Center (cm-1)
    80% 890.8615 966.4460 75.5845 928.6537
    50% 884.8935 972.7415 87.8480 928.8175
    20% 878.8188 979.3073 100.4884 929.0630
    5% 872.0961 986.2397 114.1437 929.1679
    Channel 5
    The peak wavenumber was at 830.43 and had a value of 0.85
    File starting point is at wavenumber = 710.38
    File ending point is at wavenumber = 1005.41
    Moment Center Wavenumber = 839.1349
    Percent line at which curve crosses Wavenumber (cm-1) μm
    1.00% 770.5272 12.9781
    1.00% 786.4213 12.7158
    5.00% 771.9020 12.9550
    5.00% 771.9152 12.9548
    5.00% 796.2563 12.5588
    10.00% 798.3840 12.5253
    20.00% 800.4968 12.4922
    50.00% 803.0125 12.4531
    80.00% 805.4152 12.4160
    80.00% 870.3591 11.4895
    50.00% 871.8143 11.4703
    20.00% 873.8174 11.4440
    10.00% 875.6295 11.4204
    5.00% 878.3108 11.3855
    5.00% 1005.4026 9.9463
    1.00% 891.6301 11.2154
    0.10% 996.0803 10.0394
    Area Point Limits Lower (cm-1) Upper (cm-1)
    99% 798.2174 874.2559
    96% 802.6562 870.9916
    70% 812.7241 860.9028
    50% 819.5603 853.8218
    0% (area center) 836.6823 836.6823
    Crossing Lower (cm-1) Upper (cm-1) Width (cm-1) Center (cm-1)
    80% 805.4152 870.3591 64.9439 837.8871
    50% 803.0125 871.8143 68.8018 837.4134
    20% 800.4968 873.8174 73.3207 837.1571
    5% 796.2563 878.3108 82.0545 837.2836

    Table D.4-6 contains NOAA-18 AVHRR/3 solar reflectance channel information such as equivalent width, w, effective central wavelength, λe, and in-band solar irradiance, F.

    Table D.4-6. NOAA-18 AVHRR/3 Solar Reflectance Channel Information.

    Channel

    Equivalent Width w (μm)

    Effective Wavelength λe(μm)

    Extraterrestrial Solar Irradiance in Band F (W/m2)

    1

    		 0.0793 0.634 130.3
    2 0.2465 0.849 246.0
    3A 0.0552 1.608 13.53
    Note: These quantities are based on the solar irradiance data of Neckel and Labs (1984), which is a widely used source of such data.

    Table D.4-7 contains the temperature-to-radiance coefficients for NOAA-18 AVHRR/3 Channels 3B, 4 and 5.

    Table D.4-7. NOAA-18 AVHRR/3 thermal channel temperature-to-radiance coefficients.
      νc A B
    Channel 3B 2659.7952 1.698704 0.996960
    Channel 4 928.1460 0.436645 0.998607
    Channel 5 833.2532 0.253179 0.999057

    Tables D.4-8 and D.4-9 contain the corresponding spectral response values for NOAA-18 AVHRR/3 Channels 1, 2, 3A and Channels 3B, 4 and 5, respectively. Note: Negative response values were caused by system response noise and are to be ignored but are included in the table for completeness.

    Table D.4-8. NOAA-18 AVHRR/3 spectral response values for Channels 1, 2 and 3A.
    Channel 1 Channel 2 Channel 3A
    Wavelength
    (μm)    		 Relative Response
    (percent)    		 Wavelength
    (μm)    		 Relative Response
    (percent)    		 Wavelength
    (μm)    		 Relative Response
    (percent)
    0.43 0.5482 0.5 0.2065 1.49 -0.01126
    0.432 -0.4991 0.504 0.1214 1.491 -3.204E-05
    0.434 -0.4453 0.508 0.02394 1.492 -0.003608
    0.436 -0.4408 0.512 0.1665 1.493 -0.002937
    0.438 0.6435 0.516 -0.02392 1.494 0.01482
    0.44 -0.05732 0.52 0.01931 1.495 0.0004862
    0.442 -0.1989 0.524 0.04631 1.496 -0.006259
    0.444 -0.1398 0.528 -0.06858 1.497 -0.005706
    0.446 -0.0632 0.532 0.007583 1.498 -0.001863
    0.448 -0.08214 0.536 -0.02613 1.499 -0.008933
    0.45 -0.0334 0.54 0.03611 1.5 -0.0002507
    0.452 0.00343 0.544 -0.01834 1.501 0.002086
    0.454 -0.09572 0.548 -0.02654 1.502 -0.01278
    0.456 -0.1688 0.552 -0.01448 1.503 -0.005848
    0.458 -0.3403 0.556 -0.01198 1.504 0.008775
    0.46 0.1185 0.56 -0.01418 1.505 -0.006214
    0.462 -0.03081 0.564 0.02179 1.506 0.003444
    0.464 -0.09683 0.568 -0.001807 1.507 0.0004027
    0.466 -0.1251 0.572 0.0002855 1.508 -0.00329
    0.468 -0.06288 0.576 0.002649 1.509 -0.002108
    0.47 -0.2463 0.58 0.008655 1.51 4.13E-05
    0.472 0.0278 0.584 -0.01562 1.511 0.002915
    0.474 -0.05636 0.588 0.002513 1.512 -0.007551
    0.476 -0.07515 0.592 0.006055 1.513 -0.003986
    0.478 -0.01259 0.596 -0.006155 1.514 -0.01098
    0.48 -0.0111 0.6 -0.00424 1.515 0.004049
    0.482 -0.02637 0.604 -0.006426 1.516 -0.008353
    0.484 -0.09252 0.608 -0.006754 1.517 -0.007597
    0.486 -0.05576 0.612 -0.01511 1.518 -0.004678
    0.488 -0.03224 0.616 0.01155 1.519 -3.044E-05
    0.49 -0.06114 0.62 -0.004929 1.52 -0.002242
    0.492 -0.0702 0.624 0.01059 1.521 0.01076
    0.494 0.09047 0.628 -0.02405 1.522 -0.005945
    0.496 0.02123 0.632 -0.01059 1.523 0.000183
    0.498 0.06577 0.636 -0.006757 1.524 0.001962
    0.5 -0.07033 0.64 -0.007715 1.525 0.00555
    0.502 -0.009833 0.644 -0.003008 1.526 -0.001514
    0.504 -0.0752 0.648 0.008143 1.527 -0.001711
    0.506 -0.01647 0.652 0.009704 1.528 -0.0004498
    0.508 0.04744 0.656 0.01493 1.529 0.005482
    0.51 0.002296 0.66 -0.01255 1.53 0.008844
    0.512 0.02039 0.664 -0.01785 1.531 -0.001761
    0.514 -0.02391 0.668 -0.01165 1.532 -0.004349
    0.516 -0.04522 0.672 0.01187 1.533 0.003296
    0.518 -0.03861 0.676 0.0009694 1.534 0.002396
    0.52 -0.04376 0.68 -0.008144 1.535 -0.003642
    0.522 0.06484 0.684 -0.004853 1.536 0.0002447
    0.524 -0.04392 0.688 0.002021 1.537 -0.001821
    0.526 0.05376 0.692 0.00856 1.538 0.006159
    0.528 0.03719 0.696 0.1755 1.539 -0.0001661
    0.53 -0.0104 0.7 1.507 1.54 -0.001402
    0.532 0.01659 0.704 5.171 1.541 0.01059
    0.534 0.0001955 0.708 9.39 1.542 0.0151
    0.536 0.02057 0.712 12.99 1.543 0.01423
    0.538 -0.04047 0.716 17.12 1.544 0.02244
    0.54 0.02254 0.72 21.63 1.545 0.01666
    0.542 -0.0184 0.724 27.39 1.546 0.02094
    0.544 0.01197 0.728 35.51 1.547 0.03062
    0.546 -0.01396 0.732 51.4 1.548 0.04164
    0.548 0.005773 0.736 71.72 1.549 0.05266
    0.55 0.02533 0.74 76.38 1.55 0.06308
    0.552 0.01019 0.744 79.23 1.551 0.08367
    0.554 0.02255 0.748 82.73 1.552 0.1095
    0.556 0.01334 0.752 86.47 1.553 0.1344
    0.558 0.01509 0.756 91.26 1.554 0.1822
    0.56 -0.002716 0.76 94.43 1.555 0.215
    0.562 0.02062 0.764 95.95 1.556 0.2759
    0.564 0.009632 0.768 95.84 1.557 0.3457
    0.566 0.04595 0.772 95.25 1.558 0.4404
    0.568 0.04264 0.776 95.15 1.559 0.551
    0.57 0.07186 0.78 95.89 1.56 0.6884
    0.572 0.08527 0.784 97.43 1.561 0.8552
    0.574 0.131 0.788 98.47 1.562 1.095
    0.576 0.211 0.792 98.71 1.563 1.41
    0.578 0.6492 0.796 97.7 1.564 1.758
    0.58 1.845 0.8 96.3 1.565 2.232
    0.582 4.599 0.804 95.46 1.566 2.811
    0.584 11.51 0.808 95.98 1.567 3.554
    0.586 25.72 0.812 97 1.568 4.721
    0.588 42.72 0.816 98.36 1.569 5.997
    0.59 51.3 0.82 99.48 1.57 7.692
    0.592 54.72 0.824 99.89 1.571 10.23
    0.594 57.82 0.828 100 1.572 13.13
    0.596 62.24 0.832 99.63 1.573 17.63
    0.598 67.47 0.836 99.13 1.574 22.58
    0.6 71.98 0.84 98.71 1.575 29.27
    0.602 75.49 0.844 98.44 1.576 38.42
    0.604 77.65 0.848 98.14 1.577 48.23
    0.606 79.16 0.852 97.58 1.578 62.45
    0.608 80.67 0.856 97.13 1.579 75.13
    0.61 82.19 0.86 96.44 1.58 83.09
    0.612 83.44 0.864 96.17 1.581 85.04
    0.614 84.03 0.868 96.13 1.582 86.97
    0.616 85.11 0.872 96.13 1.583 89.63
    0.618 86.35 0.876 96.54 1.584 90.32
    0.62 87.14 0.88 96.98 1.585 92.55
    0.622 87.76 0.884 97.28 1.586 92.86
    0.624 88.65 0.888 96.68 1.587 94
    0.626 89.49 0.892 96.3 1.588 94.44
    0.628 90.21 0.896 95.08 1.589 93.81
    0.63 90.81 0.9 93.8 1.59 94.93
    0.632 90.81 0.904 92.77 1.591 93.64
    0.634 92.12 0.908 92.52 1.592 94.64
    0.636 93.14 0.912 93.35 1.593 93.8
    0.638 94.23 0.916 94.36 1.594 94.22
    0.64 95.61 0.92 95.1 1.595 94.37
    0.642 97.06 0.924 95.05 1.596 93.67
    0.644 98.38 0.928 94.9 1.597 94.75
    0.646 99.65 0.932 94.1 1.598 93.49
    0.648 100 0.936 94.07 1.599 94.79
    0.65 99.52 0.94 95.22 1.6 94
    0.652 98.43 0.944 94.3 1.601 94.53
    0.654 96.79 0.948 93.92 1.602 95.12
    0.656 94.03 0.952 92.37 1.603 94
    0.658 92.75 0.956 91 1.604 95.46
    0.66 90.41 0.96 90.01 1.605 93.96
    0.662 88.63 0.964 89.5 1.606 95.02
    0.664 87.11 0.968 89.38 1.607 94.15
    0.666 86.74 0.972 88.08 1.608 94.57
    0.668 87.69 0.976 84.09 1.609 94.62
    0.67 89.95 0.98 78.21 1.61 93.73
    0.672 93.34 0.984 72.91 1.611 94.35
    0.674 95.35 0.988 70.26 1.612 93.16
    0.676 89.57 0.992 63.66 1.613 94.43
    0.678 71.41 0.996 40 1.614 92.61
    0.68 47.92 1 15.65 1.615 94.13
    0.682 28.54 1.004 5.466 1.616 93.09
    0.684 16.15 1.008 2.097 1.617 93.36
    0.686 9.081 1.012 0.9229 1.618 93.44
    0.688 5.125 1.016 0.471 1.619 93.12
    0.69 2.97 1.02 0.2807 1.62 94.01
    0.692 1.796 1.024 0.1864 1.621 92.98
    0.694 1.088 1.028 0.1385 1.622 94.32
    0.696 0.6681 1.032 0.1013 1.623 93.05
    0.698 0.4033 1.036 0.08116 1.624 100
    0.7 0.2331 1.04 0.06362 1.625 93.56
    0.702 0.1275 1.044 0.05126 1.626 93.39
    0.704 0.07413 1.048 0.03825 1.627 95.56
    0.706 0.0412 1.052 0.02733 1.628 92.1
    0.708 0.029 1.056 0.02058 1.629 89.69
    0.71 0.02537 1.06 0.01907 1.63 87.36
    0.712 -0.01369 1.064 0.0112 1.631 86.5
    0.714 0.008909 1.068 0.01003 1.632 82.9
    0.716 -0.01376 1.072 0.009464 1.633 82.16
    0.718 -0.001914 - - 1.634 78.24
    0.72 -0.004212 - - 1.635 72.23
    0.722 -0.01787 - - 1.636 58.89
    0.724 0.0011 - - 1.637 47.8
    0.726 0.001362 - - 1.638 37.41
    0.728 0.00199 - - 1.639 29.66
    0.73 -0.007353 - - 1.64 23.93
    0.732 0.007324 - - 1.641 18.76
    0.734 4.853E-05 - - 1.642 14.92
    0.736 0.003495 - - 1.643 11.66
    0.738 -0.007934 - - 1.644 9.685
    0.74 0.01028 - - 1.645 7.643
    0.742 -0.001353 - - 1.646 6.282
    0.744 0.00312 - - 1.647 5.004
    0.746 -0.004181 - - 1.648 4.144
    0.748 0.0004726 - - 1.649 3.379
    0.75 0.008602 - - 1.65 2.875
    0.752 -9.348E-05 - - 1.651 2.38
    0.754 0.008985 - - 1.652 1.977
    0.756 0.0012 - - 1.653 1.668
    0.758 0.001857 - - 1.654 1.39
    0.76 0.001879 - - 1.655 1.19
    0.762 0.009218 - - 1.656 0.9964
    0.764 0.006994 - - 1.657 0.8589
    0.766 0.005242 - - 1.658 0.7168
    0.768 -0.006815 - - 1.659 0.6288
    0.77 0.005009 - - 1.66 0.5247
    0.772 -0.004104 - - 1.661 0.4752
    0.774 0.009178 - - 1.662 0.3974
    0.776 0.01019 - - 1.663 0.3486
    0.778 0.004144 - - 1.664 0.3085
    0.78 -0.007043 - - 1.665 0.2679
    0.782 0.00225 - - 1.666 0.2313
    0.784 0.002506 - - 1.667 0.2033
    0.786 0.007953 - - 1.668 0.1823
    0.788 0.004954 - - 1.669 0.1619
    0.79 0.003137 - - 1.67 0.1408
    0.792 -0.002639 - - 1.671 0.1326
    0.794 0.008037 - - 1.672 0.1234
    0.796 0.01802 - - 1.673 0.1114
    0.798 0.003976 - - 1.674 0.1007
    0.8 -0.002712 - - 1.675 0.08638
    0.802 0.005298 - - 1.676 0.0796
    0.804 -0.005222 - - 1.677 0.0762
    0.806 0.004339 - - 1.678 0.06907
    0.808 0.007625 - - 1.679 0.06739
    0.81 0.001873 - - 1.68 0.05652
    0.812 0.006123 - - 1.681 0.05379
    0.814 -0.004213 - - 1.682 0.0533
    0.816 0.009167 - - 1.683 0.0516
    0.818 0.001116 - - 1.684 0.04725
    0.82 0.01765 - - 1.685 0.04468
    0.822 0.00647 - - 1.686 0.03846
    0.824 0.008867 - - 1.687 0.03259
    0.826 0.001118 - - 1.688 0.03191
    0.828 -0.0002036 - - 1.689 0.03388
    0.83 0.0007624 - - 1.69 0.04858
    - - - - 1.691 0.02507
    - - - - 1.692 0.02033
    - - - - 1.693 0.02351
    - - - - 1.694 0.02156
    - - - - 1.695 0.02583
    - - - - 1.696 0.02525
    - - - - 1.697 0.02323
    - - - - 1.698 0.02113
    - - - - 1.699 0.01867
    - - - - 1.7 0.02431
    - - - - 1.701 0.002693
    - - - - 1.702 0.01483
    - - - - 1.703 0.01512
    - - - - 1.704 0.01155
    - - - - 1.705 0.008663
    - - - - 1.706 0.007095
    - - - - 1.707 0.006973
    - - - - 1.708 0.002238
    - - - - 1.709 0.006505
    - - - - 1.71 -0.001229
    - - - - 1.711 0.001694
    - - - - 1.712 -0.001285
    - - - - 1.713 -0.00546
    - - - - 1.714 0.002052
    - - - - 1.715 0.0009516
    - - - - 1.716 0.002313
    - - - - 1.717 0.001935
    - - - - 1.718 -2.684E-05
    - - - - 1.719 -0.00279
    - - - - 1.72 0.004054
    - - - - 1.721 -0.009511
    - - - - 1.722 0.001225
    - - - - 1.723 0.0007064
    - - - - 1.724 0.001214
    - - - - 1.725 -0.01182
    - - - - 1.726 0.0004621
    - - - - 1.727 -0.008961
    - - - - 1.728 -0.004333
    - - - - 1.729 -0.004064
    - - - - 1.73 0.006525

    Table D.4-9. NOAA-18 AVHRR/3 spectral response values for Channels 3B, 4 and 5.
    Channel 3B Channel 4 Channel 5
    Wavelength
    (μm)    		 Relative Response
    (percent)    		 Wavelength
    (μm)    		 Relative Response
    (percent)    		 Wavelength
    (μm)    		 Relative Response
    (percent)
    2.98 0.005821 8.8 0.1664 10 -0.03539
    2.987 0.00561 8.82 0.3266 10.02 0.009362
    2.994 0.002355 8.84 0.1765 10.04 -0.03535
    3.001 -1.529E-05 8.86 0.1904 10.06 -0.0293
    3.008 0.0004373 8.88 0.0145 10.08 0.0295
    3.015 0.002535 8.9 0.08326 10.1 0.07683
    3.022 0.001323 8.92 0.2341 10.12 -0.04549
    3.029 0.0001636 8.94 0.1932 10.14 -0.02886
    3.036 3.501E-05 8.96 0.2334 10.16 0.001643
    3.043 0.001975 8.98 0.1628 10.18 -0.04027
    3.05 0.002208 9 0.06109 10.2 0.04544
    3.057 0.002149 9.02 0.1955 10.22 -0.01036
    3.064 0.002497 9.04 0.261 10.24 0.009124
    3.071 0.00311 9.06 0.1657 10.26 -0.02651
    3.078 0.003457 9.08 0.2374 10.28 0.05153
    3.085 0.004767 9.1 0.1182 10.3 -0.05612
    3.092 0.004772 9.12 0.1036 10.32 0.03368
    3.099 0.001163 9.14 0.1938 10.34 -0.05408
    3.106 0.0005487 9.16 0.05562 10.36 0.0223
    3.113 0.001447 9.18 0.0903 10.38 0.02301
    3.12 0.002405 9.2 0.1095 10.4 -0.009716
    3.127 0.001675 9.22 0.01739 10.42 -0.02414
    3.134 0.002932 9.24 0.09689 10.44 -0.0637
    3.141 5.941E-05 9.26 0.05051 10.46 -0.0008269
    3.148 0.00345 9.28 0.06581 10.48 -0.04951
    3.155 0.001651 9.3 0.08589 10.5 0.06151
    3.162 0.003187 9.32 0.05129 10.52 -0.01731
    3.169 0.001797 9.34 0.1091 10.54 -0.03997
    3.176 0.004379 9.36 0.08176 10.56 -0.01921
    3.183 0.003722 9.38 0.1259 10.58 0.03774
    3.19 0.002581 9.4 0.01984 10.6 0.02313
    3.197 0.001678 9.42 0.1111 10.62 -0.03246
    3.204 0.005527 9.44 0.1688 10.64 -0.03007
    3.211 0.0002406 9.46 0.1304 10.66 0.06583
    3.218 0.00132 9.48 -0.09623 10.68 0.01592
    3.225 0.006236 9.5 0.0599 10.7 -0.05888
    3.232 0.004785 9.52 -0.02466 10.72 -0.06153
    3.239 0.002852 9.54 -0.01773 10.74 0.03855
    3.246 0.000298 9.56 -0.001286 10.76 -0.03731
    3.253 0.00556 9.58 -0.0394 10.78 0.004311
    3.26 0.005595 9.6 -0.0406 10.8 0.04331
    3.267 0.004846 9.62 -0.02805 10.82 -0.01564
    3.274 0.005526 9.64 -0.1551 10.84 0.06147
    3.281 0.002007 9.66 -0.08078 10.86 -0.02778
    3.288 -0.0004339 9.68 -0.0552 10.88 0.02984
    3.295 0.003932 9.7 -0.05489 10.9 -0.0221
    3.302 0.009059 9.72 0.0202 10.92 0.03233
    3.309 0.005778 9.74 -0.05128 10.94 0.06169
    3.316 0.01257 9.76 -0.01781 10.96 0.05259
    3.323 0.008382 9.78 -0.1544 10.98 -0.01183
    3.33 0.009695 9.8 -0.06868 11 -0.01661
    3.337 0.0043 9.82 -0.102 11.02 -0.002161
    3.344 0.01084 9.84 -0.1521 11.04 0.1169
    3.351 0.01195 9.86 -0.1032 11.06 -0.05575
    3.358 0.01725 9.88 -0.1164 11.08 0.02142
    3.365 0.01695 9.9 -0.09603 11.1 0.06993
    3.372 0.02007 9.92 -0.1049 11.12 -0.0166
    3.379 0.0251 9.94 -0.1887 11.14 0.07442
    3.386 0.03252 9.96 -0.1412 11.16 -0.03891
    3.393 0.04612 9.98 -0.1042 11.18 0.04464
    3.4 0.06196 10 -0.1022 11.2 0.02668
    3.407 0.08595 10.02 -0.127 11.22 -0.0183
    3.414 0.119 10.04 0.02737 11.24 0.04568
    3.421 0.1649 10.06 0.1489 11.26 -0.00688
    3.428 0.1976 10.08 0.3211 11.28 0.02574
    3.435 0.3627 10.1 0.6807 11.3 0.09864
    3.442 0.4956 10.12 1.229 11.32 0.1962
    3.449 0.6263 10.14 2.121 11.34 0.3741
    3.456 0.8734 10.16 3.478 11.36 0.7868
    3.463 1.028 10.18 5.523 11.38 1.571
    3.47 1.321 10.2 8.297 11.4 2.875
    3.477 1.579 10.22 12.01 11.42 5.23
    3.484 1.956 10.24 16.59 11.44 8.925
    3.491 2.343 10.26 21.82 11.46 15.32
    3.498 2.728 10.28 28.04 11.48 24.65
    3.505 3.498 10.3 36.11 11.5 36.17
    3.512 4.298 10.32 45.15 11.52 48.31
    3.519 6.077 10.34 54.89 11.54 58.85
    3.526 7.809 10.36 65.02 11.56 67.67
    3.533 10.8 10.38 74.83 11.58 73.48
    3.54 15.23 10.4 83.64 11.6 77.85
    3.547 21.18 10.42 89.46 11.62 79.85
    3.554 29.14 10.44 94.95 11.64 82.47
    3.561 36.85 10.46 97.2 11.66 83.31
    3.568 49.22 10.48 97.76 11.68 85.39
    3.575 58.74 10.5 98.31 11.7 86.94
    3.582 70.04 10.52 97.18 11.72 88.47
    3.589 77.15 10.54 98.26 11.74 90.35
    3.596 79.57 10.56 99.08 11.76 92.79
    3.603 81.86 10.58 98.26 11.78 93.14
    3.61 81.4 10.6 99.65 11.8 93.71
    3.617 84.25 10.62 100 11.82 95.72
    3.624 81.43 10.64 99.38 11.84 98.03
    3.631 84.86 10.66 98.96 11.86 97.78
    3.638 82.78 10.68 98.7 11.88 99.09
    3.645 83.16 10.7 98.34 11.9 97.98
    3.652 83.36 10.72 97.68 11.92 99.45
    3.659 85 10.74 97.32 11.94 99.56
    3.666 95.38 10.76 96.96 11.96 99.83
    3.673 93.76 10.78 96.52 11.98 100
    3.68 84.9 10.8 95.47 12 99.15
    3.687 88.73 10.82 94.86 12.02 98.48
    3.694 89.76 10.84 95.06 12.04 98.44
    3.701 89.21 10.86 95.04 12.06 95.09
    3.708 86.22 10.88 94.44 12.08 93.53
    3.715 89.46 10.9 93.75 12.1 92.95
    3.722 85.68 10.92 92.68 12.12 90.8
    3.729 90.26 10.94 94.39 12.14 90.82
    3.736 89.67 10.96 92.52 12.16 89.38
    3.743 93.6 10.98 94.14 12.18 88.33
    3.75 92.67 11 92.27 12.2 88.71
    3.757 91.65 11.02 92.15 12.22 86.41
    3.764 92.49 11.04 90.55 12.24 88.33
    3.771 94.58 11.06 90.11 12.26 89.27
    3.778 92.4 11.08 88.31 12.28 89.95
    3.785 92.22 11.1 87.36 12.3 91.59
    3.792 95.55 11.12 87.15 12.32 93.14
    3.799 97 11.14 84.44 12.34 94.25
    3.806 94.28 11.16 83.06 12.36 94.16
    3.813 94.47 11.18 79.52 12.38 92.34
    3.82 94.82 11.2 77.08 12.4 96.56
    3.827 95.15 11.22 72.44 12.42 95.37
    3.834 95.26 11.24 69.35 12.44 97.64
    3.841 96.1 11.26 63.02 12.46 93.88
    3.848 97.23 11.28 57.15 12.48 82.69
    3.855 98.11 11.3 50.13 12.5 63.53
    3.862 95.69 11.32 43.17 12.52 42.87
    3.869 95.4 11.34 35.73 12.54 26.33
    3.876 97.07 11.36 27.99 12.56 14.92
    3.883 93.86 11.38 21.5 12.58 8.684
    3.89 100 11.4 15.3 12.6 4.974
    3.897 99.77 11.42 10.68 12.62 2.797
    3.904 99.52 11.44 7.159 12.64 1.742
    3.911 99.16 11.46 4.722 12.66 1.017
    3.918 98.94 11.48 3.078 12.68 0.5638
    3.925 96.26 11.5 1.982 12.7 0.3322
    3.932 91 11.52 1.159 12.72 0.144
    3.939 86.68 11.54 0.6558 12.74 0.0605
    3.946 71.67 11.56 0.4008 12.76 -0.05995
    3.953 55.73 11.58 0.07971 12.78 -0.0385
    3.96 41.3 11.6 0.008586 12.8 -0.06778
    3.967 29.33 11.62 -0.1254 12.82 0.1887
    3.974 20.65 11.64 -0.21 12.84 0.2857
    3.981 14.13 11.66 -0.1972 12.86 0.04413
    3.988 9.936 11.68 -0.3574 12.88 0.1186
    3.995 6.924 11.7 -0.3092 12.9 0.02591
    4.002 4.856 11.72 -0.3359 12.92 -0.1105
    4.009 3.513 11.74 -0.5355 12.94 0.1204
    4.016 2.442 11.76 -0.4984 12.96 -0.06407
    4.023 1.889 11.78 -0.4807 12.98 0.1746
    4.03 1.269 11.8 -0.3643 13 0.1595
    4.037 1.087 11.82 -0.4365 13.02 0.1376
    4.044 0.7584 11.84 -0.5022 13.04 -0.1519
    4.051 0.6058 11.86 -0.4786 13.06 0.05289
    4.058 0.4821 11.88 -0.4761 13.08 0.05021
    4.065 0.3838 11.9 -0.4715 13.1 0.08246
    4.072 0.3136 11.92 -0.5192 13.12 0.2107
    4.079 0.248 11.94 -0.2958 13.14 0.03574
    4.086 0.2115 11.96 -0.6285 13.16 -0.01452
    4.093 0.1635 11.98 -0.5023 13.18 0.06603
    4.1 0.1403 12 -0.1587 13.2 -0.004502
    4.107 0.1133 12.02 -0.4732 13.22 0.02938
    4.114 0.08231 12.04 -0.3381 13.24 -0.04886
    4.121 0.06583 12.06 -0.469 13.26 0.0832
    4.128 0.05304 12.08 -0.4146 13.28 0.2739
    4.135 0.0337 12.1 -0.6317 13.3 -0.03366
    4.142 0.02065 12.12 -0.6343 13.32 0.1177
    4.149 0.01889 12.14 -0.4281 13.34 0.2025
    4.156 0.01196 12.16 -0.6491 13.36 0.008849
    4.163 0.004455 12.18 -0.2293 13.38 0.02656
    4.17 0.007121 12.2 -0.4266 13.4 -0.01216
    4.177 0.002943 12.22 -0.6318 13.42 0.3052
    4.184 -0.0007016 12.24 -0.4505 13.44 -0.002972
    4.191 -0.002028 12.26 -0.4623 13.46 0.01109
    4.198 -0.003898 12.28 -0.5168 13.48 -0.1169
    4.205 -0.0139 12.3 -0.6779 13.5 0.509
    4.212 -0.04703 12.32 -0.5929 13.52 -0.1562
    4.219 -0.05257 12.34 -0.8243 13.54 0.2066
    4.226 -0.07508 12.36 -0.5347 13.56 0.1686
    4.233 -0.02801 12.38 -0.3443 13.58 -0.09293
    4.24 -0.03737 12.4 -0.5403 13.6 -0.007727
    4.247 -0.1056 12.42 -0.5 13.62 -0.09775
    4.254 -0.07546 12.44 -0.7121 13.64 -0.07847
    4.261 -0.06858 12.46 -0.7646 13.66 0.04921
    4.268 -0.1266 12.48 -0.5827 13.68 -0.1566
    4.275 -0.0527 12.5 -0.725 13.7 -0.1099
    4.282 -0.04364 12.52 -0.7138 13.72 0.3277
    4.289 -0.0431 12.54 -0.6647 13.74 -0.08578
    4.296 -0.009898 12.56 -8.718 13.76 -0.003167
    4.303 -0.01734 12.58 -0.8265 13.78 0.07112
    4.31 -0.03678 12.6 -0.7906 13.8 -0.07199
    4.317 0.01129 12.62 -0.4469 13.82 -0.05294
    4.324 -0.002634 12.64 -0.4937 13.84 0.2021
    4.331 0.002679 12.66 -0.8176 13.86 0.03029
    4.338 0.002191 12.68 -0.6362 13.88 0.02452
    4.345 0.00577 12.7 -0.7739 13.9 -0.1051
    4.352 0.01104 12.72 -0.6734 13.92 0.4075
    4.359 -0.008302 12.74 -0.9375 13.94 -0.1286
    4.366 -0.009341 12.76 -0.4207 13.96 0.07785
    4.373 -0.005425 12.78 -0.6681 13.98 0.07564
    4.38 -0.005811 12.8 -0.4439 14 -0.1319
    4.387 -0.005233 - - - -
    4.394 -0.001638 - - - -
    4.401 -0.005789 - - - -
    4.408 -0.004191 - - - -
    4.415 -0.004848 - - - -
    4.422 -0.005277 - - - -
    4.429 -0.003116 - - - -
    4.436 -0.004228 - - - -
    4.443 -0.0102 - - - -
    4.45 -0.01022 - - - -
    4.457 -0.008099 - - - -
    4.464 -0.0053 - - - -
    4.471 -0.01029 - - - -
    4.478 -0.003282 - - - -
    4.485 -0.00695 - - - -
    4.492 -0.005923 - - - -
    4.499 -0.001851 - - - -

    Figure showing spectral response curve for NOAA-18 AVHRR/3 Channel 1

    Figure showing spectral response curve for NOAA-18 AVHRR/3 Channel 2

    Figure showing spectral response curve for NOAA-18 AVHRR/3 Channel 3A

    Figure showing spectral response curve for NOAA-18 AVHRR/3 Channel 3B

    Figure showing spectral response curve for NOAA-18 AVHRR/3 Channel 4

    Figure showing spectral response curve for NOAA-18 AVHRR/3 Channel 5

    HIRS:

    Table D.4-10 contains the NOAA-18 HIRS/H305 central wave numbers and band correction coefficients for the thermal channels.

    Table D.4-10. NOAA-18 HIRS/H305 Central Wave Numbers (νc), Half power bandwidth and Band Correction Coefficients (b and c).
    Channel # νc (cm-1) Half power bandwidth (cm-1) b c
    1 668.18 3.81 0.001128 0.99999
    2 680.94 10.45 0.008162 0.99996
    3 689.68 14.68 0.019228 0.99991
    4 703.81 15.91 0.017887 0.99992
    5 714.34 16.86 0.019409 0.99991
    6 731.54 17.00 0.019968 0.99991
    7 750.56 19.26 0.109210 0.99973
    8 900.46 34.88 0.065734 0.99977
    9 1029.10 22.07 0.043472 0.99986
    10 800.73 14.83 0.016207 0.99994
    11 1364.70 39.12 0.071179 0.99982
    12 1532.20 53.44 0.110780 0.99975
    13 2189.20 20.69 0.017224 0.99997
    14 2208.40 22.05 0.018594 0.99997
    15 2238.40 21.65 0.019559 0.99997
    16 2246.70 21.44 0.017640 0.99997
    17 2419.20 27.78 0.029872 0.99995
    18 2515.40 32.42 0.048696 0.99993
    19 2666.10 101.30 0.280120 0.99962

    Table D.4-11 contains the Internal Warm Temperature (IWT) PRT count to temperature coefficients for the NOAA-18 HIRS/H305 instrument.

    Table D.4-11. NOAA-18 IWT PRT count to temperature coefficients for HIRS/H305.
    PRT A B C D E F
    1 2.818913E+01 6.571395E-03 8.918025E-08 3.469261E-11 8.789154E-16 6.667266E-19
    2 2.823452E+01 6.556452E-03 8.791554E-08 3.575126E-11 1.010300E-15 5.881786E-19
    3 2.821351E+01 6.574104E-03 9.044518E-08 3.422432E-11 8.675638E-16 6.772438E-19
    4 2.818215E+01 6.571375E-03 8.890512E-08 3.598827E-11 1.001696E-15 5.830618E-19
    5 2.823273E+01 6.569930E-03 8.772601E-08 3.383069E-11 1.044107E-15 6.888075E-19
    This information is based on the data in HIRS/4 H305 Alignment/Calibration Handbook, Revision E, May 2003.

    Table D.4-12 contains the primary, secondary and tertiary telescope temperature coefficients for the NOAA-18 H