"Clearest natural water" absorption (a) and scattering (b) coefficients. Based on: 200-800 nm: R.C. Smith and K. Baker, 1981. Appl. Optics 20(2), 177-184. 800-1000nm: D. Segelstein, 1981. "The Complex Refrac. Index of Water", M.S. Thesis, U. Missouri Measured absorption data were spline fit and resampled to 5 nm resolution. Scattering coefs were computed from A. Morel, 1974. "Optical Aspects Oceanogr.," Chap 1 unused unused unused wavelength a b (nm) (1/m) (1/m) 200.0 3.0700e+000 1.5140e-001 205.0 2.4807e+000 1.3608e-001 210.0 1.9900e+000 1.2263e-001 215.0 1.6064e+000 1.1077e-001 220.0 1.3100e+000 1.0030e-001 225.0 1.0894e+000 9.1021e-002 230.0 9.2700e-001 8.2776e-002 235.0 8.1180e-001 7.5432e-002 240.0 7.2000e-001 6.8874e-002 245.0 6.3421e-001 6.3004e-002 250.0 5.5900e-001 5.7739e-002 255.0 5.0240e-001 5.3005e-002 260.0 4.5700e-001 4.8740e-002 265.0 4.1501e-001 4.4890e-002 270.0 3.7300e-001 4.1407e-002 275.0 3.2958e-001 3.8252e-002 280.0 2.8800e-001 3.5387e-002 285.0 2.5127e-001 3.2782e-002 290.0 2.1500e-001 3.0409e-002 295.0 1.7571e-001 2.8245e-002 300.0 1.4100e-001 2.6267e-002 305.0 1.1895e-001 2.4456e-002 310.0 1.0500e-001 2.2797e-002 315.0 9.4044e-002 2.1275e-002 320.0 8.4400e-002 1.9876e-002 325.0 7.5566e-002 1.8588e-002 330.0 6.7800e-002 1.7402e-002 335.0 6.1507e-002 1.6307e-002 340.0 5.6100e-002 1.5296e-002 345.0 5.1046e-002 1.4361e-002 350.0 4.6300e-002 1.3496e-002 355.0 4.1948e-002 1.2694e-002 360.0 3.7900e-002 1.1949e-002 365.0 3.4034e-002 1.1258e-002 370.0 3.0000e-002 1.0615e-002 375.0 2.5638e-002 1.0017e-002 380.0 2.2000e-002 9.4603e-003 385.0 2.0115e-002 8.9408e-003 390.0 1.9100e-002 8.4561e-003 395.0 1.8046e-002 8.0033e-003 400.0 1.7100e-002 7.5800e-003 405.0 1.6555e-002 7.1839e-003 410.0 1.6200e-002 6.8131e-003 415.0 1.5793e-002 6.4655e-003 420.0 1.5300e-002 6.1395e-003 425.0 1.4760e-002 5.8335e-003 430.0 1.4400e-002 5.5461e-003 435.0 1.4411e-002 5.2759e-003 440.0 1.4500e-002 5.0217e-003 445.0 1.4412e-002 4.7825e-003 450.0 1.4500e-002 4.5571e-003 455.0 1.5085e-002 4.3447e-003 460.0 1.5600e-002 4.1443e-003 465.0 1.5539e-002 3.9552e-003 470.0 1.5600e-002 3.7766e-003 475.0 1.6486e-002 3.6079e-003 480.0 1.7600e-002 3.4483e-003 485.0 1.8387e-002 3.2973e-003 490.0 1.9600e-002 3.1544e-003 495.0 2.2116e-002 3.0191e-003 500.0 2.5700e-002 2.8908e-003 505.0 3.0160e-002 2.7692e-003 510.0 3.5700e-002 2.6538e-003 515.0 4.2306e-002 2.5443e-003 520.0 4.7700e-002 2.4402e-003 525.0 4.9801e-002 2.3414e-003 530.0 5.0700e-002 2.2475e-003 535.0 5.2691e-002 2.1581e-003 540.0 5.5800e-002 2.0731e-003 545.0 5.9701e-002 1.9922e-003 550.0 6.3800e-002 1.9151e-003 555.0 6.7561e-002 1.8417e-003 560.0 7.0800e-002 1.7717e-003 565.0 7.3905e-002 1.7050e-003 570.0 7.9900e-002 1.6413e-003 575.0 9.1857e-002 1.5805e-003 580.0 1.0800e-001 1.5225e-003 585.0 1.2772e-001 1.4671e-003 590.0 1.5700e-001 1.4141e-003 595.0 2.0069e-001 1.3635e-003 600.0 2.4400e-001 1.3151e-003 605.0 2.7200e-001 1.2688e-003 610.0 2.8900e-001 1.2245e-003 615.0 3.0070e-001 1.1820e-003 620.0 3.0900e-001 1.1414e-003 625.0 3.1454e-001 1.1025e-003 630.0 3.1900e-001 1.0652e-003 635.0 3.2378e-001 1.0294e-003 640.0 3.2900e-001 9.9511e-004 645.0 3.3560e-001 9.6221e-004 650.0 3.4900e-001 9.3064e-004 655.0 3.7371e-001 9.0034e-004 660.0 4.0000e-001 8.7124e-004 665.0 4.1799e-001 8.4329e-004 670.0 4.3000e-001 8.1644e-004 675.0 4.3973e-001 7.9064e-004 680.0 4.5000e-001 7.6583e-004 685.0 4.6553e-001 7.4197e-004 690.0 5.0000e-001 7.1902e-004 695.0 5.6641e-001 6.9694e-004 700.0 6.5000e-001 6.7569e-004 705.0 7.3787e-001 6.5523e-004 710.0 8.3900e-001 6.3552e-004 715.0 9.7238e-001 6.1655e-004 720.0 1.1690e+000 5.9826e-004 725.0 1.4584e+000 5.8064e-004 730.0 1.7990e+000 5.6366e-004 735.0 2.1354e+000 5.4728e-004 740.0 2.3800e+000 5.3148e-004 745.0 2.4589e+000 5.1624e-004 750.0 2.4700e+000 5.0154e-004 755.0 2.5095e+000 4.8735e-004 760.0 2.5500e+000 4.7365e-004 765.0 2.5479e+000 4.6042e-004 770.0 2.5100e+000 4.4764e-004 775.0 2.4463e+000 4.3530e-004 780.0 2.3600e+000 4.2337e-004 785.0 2.2547e+000 4.1184e-004 790.0 2.1600e+000 4.0070e-004 795.0 2.1038e+000 3.8993e-004 800.0 2.0700e+000 3.7951e-004 805.0 2.0494e+000 3.6943e-004 810.0 2.0916e+000 3.5968e-004 815.0 2.2463e+000 3.5024e-004 820.0 2.4669e+000 3.4111e-004 825.0 2.8190e+000 3.3227e-004 830.0 3.0975e+000 3.2371e-004 835.0 3.3423e+000 3.1542e-004 840.0 3.7098e+000 3.0738e-004 845.0 3.9835e+000 2.9960e-004 850.0 4.3758e+000 2.9206e-004 855.0 4.6308e+000 2.8476e-004 860.0 4.9393e+000 2.7767e-004 865.0 5.1535e+000 2.7081e-004 870.0 5.3659e+000 2.6415e-004 875.0 5.6114e+000 2.5769e-004 880.0 5.8288e+000 2.5142e-004 885.0 6.0074e+000 2.4534e-004 890.0 6.2567e+000 2.3944e-004 895.0 6.4708e+000 2.3372e-004 900.0 6.8198e+000 2.2816e-004 905.0 7.1028e+000 2.2276e-004 910.0 7.8970e+000 2.1753e-004 915.0 9.4786e+000 2.1244e-004 920.0 1.1171e+001 2.0749e-004 925.0 1.4658e+001 2.0269e-004 930.0 1.9270e+001 1.9803e-004 935.0 2.3414e+001 1.9349e-004 940.0 2.9309e+001 1.8908e-004 945.0 3.4684e+001 1.8480e-004 950.0 3.8304e+001 1.8064e-004 955.0 4.1981e+001 1.7659e-004 960.0 4.4081e+001 1.7265e-004 965.0 4.4890e+001 1.6881e-004 970.0 4.5310e+001 1.6509e-004 975.0 4.4852e+001 1.6146e-004 980.0 4.3710e+001 1.5793e-004 985.0 4.2409e+001 1.5450e-004 990.0 4.1418e+001 1.5116e-004 995.0 3.9679e+001 1.4790e-004 1000.0 3.7697e+001 1.4473e-004 -1.0 -1.0000e+000 -1.0000e+000