Simple Solar Spectral Model for Direct and Diffuse Irradiance on Horizontal and Tilted Planes at the Earth's Surface for Cloudless Atmospheres

Table 2-1. The Neckel and Labs Revised Extraterrestrial Spectrum and
              Atmospheric Absorption Coefficients at 122 Wavelengths

Wavelength
(µm)		 Extraterrestrial
Spectrum
(Wm-2µm-1)
Wavelength
(µm)		 Extraterrestrial
Spectrum
(Wm-2µm-1)
0.300 535.9 0.0 10 0.0 0.98 767.0 1.48 0.0 0.0
0.305 558.3 0.0 4.8 0.0 0.9935 757.6 0.1 0.0 0.0
0.310 622 0.0 2.7 0.0 1.04 688.1 0.00001 0.0 0.0
0.315 692.7 0.0 1.35 0.0 1.07 640.7 0.001 0.0 0.0
0.320 715.1 0.0 0.8 0.0 1.1 606.2 3.2 0.0 0.0
0.325 832.9 0.0 0.38 0.0 1.12 585.9 115.0 0.0 0.0
0.330 961.9 0.0 0.16 0.0 1.13 570.2 70.0 0.0 0.0
0.335 931.9 0.0 0.075 0.0 1.145 564.1 75.0 0.0 0.0
0.340 900.6 0.0 0.04 0.0 1.161 544.2 10.0 0.0 0.0
0.345 911.3 0.0 0.019 0.0 1.17 533.4 5.0 0.0 0.0
0.350 975.5 0.0 0.007 0.0 1.2 501.6 2.0 0.0 0.0
0.360 975.9 0.0 0.0 0.0 1.24 477.5 0.002 0.0 0.05
0.370 1119.9 0.0 0.0 0.0 1.27 422.7 0.002 0.0 0.3
0.380 1103.8 0.0 0.0 0.0 1.29 440.0 0.1 0.0 0.02
0.390 1033.8 0.0 0.0 0.0 1.32 416.8 4.0 0.0 0.0002
0.400 1479.1 0.0 0.0 0.0 1.35 391.4 200.0 0.0 0.00011
0.410 1701.3 0.0 0.0 0.0 1.395 358.9 1000.0 0.0 0.00001
0.420 1740.4 0.0 0.0 0.0 1.4425 327.5 185.0 0.0 0.05
0.430 1587.2 0.0 0.0 0.0 1.4625 317.5 80.0 0.0 0.011
0.440 1837.0 0.0 0.0 0.0 1.477 307.3 80.0 0.0 0.005
0.450 2005.0 0.0 0.003 0.0 1.497 300.4 12.0 0.0 0.0006
0.460 2043.0 0.0 0.006 0.0 1.52 292.8 0.16 0.0 0.0
0.470 1987.0 0.0 0.009 0.0 1.539 275.5 0.002 0.0 0.005
0.480 2027.0 0.0 0.014 0.0 1.558 272.1 0.0005 0.0 0.13
0.490 1896.0 0.0 0.021 0.0 1.578 259.3 0.0001 0.0 0.04
0.500 1909.0 0.0 0.03 0.0 1.592 246.9 0.00001 0.0 0.06
0.510 1927.0 0.0 0.04 0.0 1.610 244.0 0.0001 0.0 0.13
0.520 1831.0 0.0 0.048 0.0 1.630 243.5 0.001 0.0 0.001
0.530 1891.0 0.0 0.063 0.0 1.646 234.8 0.01 0.0 0.0014
0.540 1898.0 0.0 0.075 0.0 1.678 220.5 0.036 0.0 0.0001
0.550 1892.0 0.0 0.085 0.0 1.740 190.8 1.1 0.0 0.00001
0.570 1840.0 0.0 0.12 0.0 1.80 171.1 130 0.0 0.00001
0.593 1768.0 0.075 0.119 0.0 1.860 144.5 1000 0.0 0.0001
0.610 1728.0 0.0 0.12 0.0 1.920 135.7 500 0.0 0.001
0.630 1658.0 0.0 0.09 0.0 1.960 123.0 100 0.0 4.3
0.656 1524.0 0.0 0.065 0.0 1.985 123.8 4.0 0.0 0.2
0.6676 1531.0 0.0 0.051 0.0 2.005 113.0 2.9 0.0 21.0
0.690 1420.0 0.016 0.028 0.15 2.035 108.5 1.0 0.0 0.13
0.710 1399.0 0.0125 0.018 0.0 2.065 97.5 0.4 0.0 1.0
0.718 1374.0 1.8 0.015 0.0 2.10 92.4 0.22 0.0 0.08
0.7244 1373.0 2.5 0.012 0.0 2.148 82.4 0.25 0.0 0.001
0.740 1298.0 0.061 0.01 0.0 2.198 74.6 0.33 0.0 0.00038
0.7525 1269.0 0.0008 0.008 0.0 2.270 68.3 0.5 0.0 0.001
0.7575 1245.0 0.0001 0.007 0.0 2.360 63.8 4.0 0.0 0.0005
0.7625 1223.0 0.00001 0.006 4.0 2.450 49.5 80 0.0 0.00015
0.7675 1205.0 0.00001 0.005 0.35 2.5 48.5 310 0.0 0.00014
0.780 1183.0 0.0006 0.0 0.0 2.6 38.6 15000 0.0 0.00066
0.800 1148.0 0.036 0.0 0.0 2.7 36.6 22000 0.0 100.0
0.816 1091.0 1.6 0.0 0.0 2.8 32.0 8000 0.0 150.0
0.8237 1062.0 2.5 0.0 0.0 2.9 28.1 650 0.0 0.13
0.8315 1038.0 0.5 0.0 0.0 3.0 24.8 240 0.0 0.0095
0.840 1022.0 0.155 0.0 0.0 3.1 22.1 230 0.0 0.001
0.860 998.7 0.00001 0.0 0.0 3.2 19.6 100 0.0 0.8
0.880 947.2 0.0026 0.0 0.0 3.3 17.5 120 0.0 1.9
0.905 893.2 7.0 0.0 0.0 3.4 15.7 19.5 0.0 1.3
0.915 868.2 5.0 0.0 0.0 3.5 14.1 3.6 0.0 0.075
0.925 829.7 5.0 0.0 0.0 3.6 12.7 3.1 0.0 0.01
0.930 830.3 27.0 0.0 0.0 3.7 11.5 2.5 0.0 0.00195
0.937 814.0 55.0 0.0 0.0 3.8 10.4 1.4 0.0 0.004
0.948 786.9 45.0 0.0 0.0 3.9 9.5 0.17 0.0 0.29
0.965 768.3 4.0 0.0 0.0 4.0 8.6 0.0045 0.0 0.025

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