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.**
	N_S	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, T_PRT (Kelvin) of each PRT to count value, C_PRT, 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
1	276.601	0.05090	1.657 E-06
2	276.683	0.05101	1.482 E-06
3	276.565	0.05117	1.313 E-06
4	276.615	0.05103	1.484 E-06

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
1	High albedo range (26 - 100%)	0.16100	-55.37
2	Low albedo range (0-25%)	0.05290	-2.084
2	High albedo range (26 - 100%)	0.15873	-55.31
3A	Low albedo range (0-12.5%)	0.02618	-0.982
3A	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, λ_e, 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 λ_e(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.
	ν_c	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 (ν_c), Half power bandwidth and Band Correction Coefficients (b and c).
Channel #	ν_c (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 HIRS/H305 instrument.

Table D.4-12. NOAA-18 HIRS/H305 primary, secondary and tertiary telescope temperature coefficients.
	A	B	C	D	E	F
Primary	-1.297930E+01	1.760107E-02	-3.801217E-06	1.395499E-09	-2.765677E-13	2.919796E-17
Secondary	-1.294181E+01	1.768703E-02	-3.910969E-06	1.447734E-09	-2.868346E-13	2.985872E-17
Tertiary	-1.294164E+01	1.758273E-02	-3.788286E-06	1.385381E-09	-2.722860E-13	2.857689E-17
This information is based on the data in HIRS/4 H305 Alignment/Calibration Handbook, Revision E, May 2003.

Table D.4-13 contains the