Ice refractive index from Warren (1984), Optical constants of ice from the ultraviolet to the microwave, Appl. Optics, 23, 11,906-11,926, 1984. Wavelength (microns) real imaginary 4.43000e-02 8.34400e-01 1.64000e-01 4.86000e-02 8.40400e-01 2.23000e-01 5.39000e-02 8.61600e-01 2.79000e-01 6.05000e-02 8.93000e-01 3.92000e-01 6.89000e-02 1.02330e+00 5.17000e-01 7.75000e-02 1.20040e+00 5.24000e-01 9.18000e-02 1.41640e+00 3.80000e-01 1.07800e-01 1.40220e+00 2.51000e-01 1.21000e-01 1.39630e+00 2.47000e-01 1.31900e-01 1.34140e+00 1.80000e-01 1.39300e-01 1.32030e+00 3.44000e-01 1.45000e-01 1.52130e+00 3.89000e-01 1.48500e-01 1.61170e+00 2.98000e-01 1.55000e-01 1.63830e+00 1.56000e-01 1.62500e-01 1.55640e+00 1.00000e-01 1.73700e-01 1.45990e+00 3.00000e-05 1.82100e-01 1.42920e+00 4.00000e-07 1.93000e-01 1.40420e+00 1.64000e-08 3.50000e-01 1.32490e+00 3.76500e-09 4.60000e-01 1.31510e+00 1.53000e-09 4.70000e-01 1.31450e+00 1.55000e-09 4.80000e-01 1.31400e+00 1.64000e-09 4.90000e-01 1.31350e+00 1.78000e-09 5.00000e-01 1.31300e+00 1.91000e-09 5.10000e-01 1.31260e+00 2.14000e-09 5.20000e-01 1.31220e+00 2.26000e-09 5.30000e-01 1.31180e+00 2.54000e-09 5.40000e-01 1.31140e+00 2.93000e-09 5.50000e-01 1.31100e+00 3.11000e-09 5.60000e-01 1.31060e+00 3.29000e-09 5.70000e-01 1.31030e+00 3.52000e-09 5.80000e-01 1.31000e+00 4.04000e-09 5.90000e-01 1.30970e+00 4.88000e-09 6.00000e-01 1.30940e+00 5.73000e-09 6.10000e-01 1.30910e+00 6.89000e-09 6.20000e-01 1.30880e+00 8.58000e-09 6.30000e-01 1.30850e+00 1.04000e-08 6.40000e-01 1.30830e+00 1.22000e-08 6.50000e-01 1.30800e+00 1.43000e-08 6.60000e-01 1.30780e+00 1.66000e-08 6.70000e-01 1.30760e+00 1.89000e-08 6.80000e-01 1.30730e+00 2.09000e-08 6.90000e-01 1.30710e+00 2.40000e-08 7.00000e-01 1.30690e+00 2.90000e-08 7.10000e-01 1.30670e+00 3.44000e-08 7.20000e-01 1.30650e+00 4.03000e-08 7.30000e-01 1.30620e+00 4.30000e-08 7.40000e-01 1.30600e+00 4.92000e-08 7.50000e-01 1.30580e+00 5.87000e-08 7.60000e-01 1.30570e+00 7.08000e-08 7.70000e-01 1.30550e+00 8.58000e-08 7.80000e-01 1.30530e+00 1.02000e-07 7.90000e-01 1.30510e+00 1.18000e-07 8.00000e-01 1.30490e+00 1.34000e-07 8.10000e-01 1.30470e+00 1.40000e-07 8.20000e-01 1.30450e+00 1.43000e-07 8.30000e-01 1.30440e+00 1.45000e-07 8.40000e-01 1.30420e+00 1.51000e-07 8.50000e-01 1.30400e+00 1.83000e-07 8.60000e-01 1.30380e+00 2.15000e-07 8.70000e-01 1.30370e+00 2.65000e-07 8.80000e-01 1.30350e+00 3.35000e-07 8.90000e-01 1.30330e+00 3.92000e-07 9.00000e-01 1.30320e+00 4.20000e-07 9.10000e-01 1.30300e+00 4.44000e-07 9.20000e-01 1.30280e+00 4.74000e-07 9.30000e-01 1.30270e+00 5.11000e-07 9.40000e-01 1.30250e+00 5.53000e-07 9.50000e-01 1.30230e+00 6.02000e-07 9.60000e-01 1.30220e+00 7.55000e-07 9.70000e-01 1.30200e+00 9.26000e-07 9.80000e-01 1.30180e+00 1.12000e-06 9.90000e-01 1.30170e+00 1.33000e-06 1.00000e+00 1.30150e+00 1.62000e-06 1.01000e+00 1.30130e+00 2.00000e-06 1.02000e+00 1.30120e+00 2.25000e-06 1.03000e+00 1.30100e+00 2.33000e-06 1.04000e+00 1.30080e+00 2.33000e-06 1.05000e+00 1.30060e+00 2.17000e-06 1.06000e+00 1.30050e+00 1.96000e-06 1.07000e+00 1.30030e+00 1.81000e-06 1.08000e+00 1.30010e+00 1.74000e-06 1.09000e+00 1.30000e+00 1.73000e-06 1.10000e+00 1.29980e+00 1.70000e-06 1.11000e+00 1.29960e+00 1.76000e-06 1.12000e+00 1.29950e+00 1.82000e-06 1.13000e+00 1.29930e+00 2.04000e-06 1.14000e+00 1.29910e+00 2.25000e-06 1.15000e+00 1.29890e+00 2.29000e-06 1.16000e+00 1.29870e+00 3.04000e-06 1.17000e+00 1.29850e+00 3.84000e-06 1.18000e+00 1.29840e+00 4.77000e-06 1.19000e+00 1.29820e+00 5.76000e-06 1.20000e+00 1.29800e+00 6.71000e-06 1.21000e+00 1.29780e+00 8.66000e-06 1.22000e+00 1.29760e+00 1.02000e-05 2.37000e+00 1.24510e+00 6.18000e-04 2.39000e+00 1.24270e+00 6.80000e-04 2.41000e+00 1.24000e+00 7.30000e-04 2.43000e+00 1.23730e+00 7.82000e-04 2.46000e+00 1.23270e+00 7.82000e-04 2.50000e+00 1.22580e+00 9.25000e-04 2.52000e+00 1.22200e+00 9.20000e-04 2.55000e+00 1.21550e+00 8.92000e-04 2.56500e+00 1.21180e+00 8.70000e-04 2.58000e+00 1.20790e+00 8.90000e-04 2.60000e+00 1.20210e+00 1.01000e-03 2.62000e+00 1.19570e+00 1.35000e-03 2.67500e+00 1.17410e+00 3.42000e-03 2.72500e+00 1.14730e+00 7.92000e-03 2.77800e+00 1.10770e+00 2.00000e-02 2.81700e+00 1.06740e+00 3.80000e-02 2.83300e+00 1.04760e+00 5.20000e-02 2.84900e+00 1.02650e+00 6.80000e-02 2.86500e+00 1.00360e+00 9.23000e-02 2.88200e+00 9.82000e-01 1.27000e-01 2.89900e+00 9.65000e-01 1.69000e-01 2.91500e+00 9.59600e-01 2.21000e-01 2.93300e+00 9.72700e-01 2.76000e-01 2.95000e+00 9.91700e-01 3.12000e-01 2.96700e+00 1.00670e+00 3.47000e-01 2.98500e+00 1.02190e+00 3.88000e-01 3.00300e+00 1.04270e+00 4.38000e-01 3.02100e+00 1.07600e+00 4.93000e-01 3.04000e+00 1.12950e+00 5.54000e-01 3.05800e+00 1.21270e+00 6.12000e-01 3.07700e+00 1.32510e+00 6.25000e-01 3.09600e+00 1.42600e+00 5.93000e-01 3.11500e+00 1.49660e+00 5.39000e-01 3.13500e+00 1.55100e+00 4.91000e-01 3.15500e+00 1.59990e+00 4.38000e-01 3.17500e+00 1.63630e+00 3.72000e-01 3.19500e+00 1.65020e+00 3.00000e-01 3.21500e+00 1.64280e+00 2.38000e-01 3.23600e+00 1.62690e+00 1.93000e-01 3.25700e+00 1.61280e+00 1.58000e-01 3.27900e+00 1.59240e+00 1.21000e-01 3.30000e+00 1.57330e+00 1.03000e-01 3.32200e+00 1.55770e+00 8.36000e-02 3.34500e+00 1.54130e+00 6.68000e-02 3.36700e+00 1.52650e+00 5.40000e-02 3.39000e+00 1.51140e+00 4.22000e-02 3.41300e+00 1.49730e+00 3.42000e-02 3.43600e+00 1.48450e+00 2.74000e-02 3.46000e+00 1.47210e+00 2.20000e-02 3.48400e+00 1.46120e+00 1.86000e-02 3.50900e+00 1.45130e+00 1.52000e-02 3.53400e+00 1.44210e+00 1.26000e-02 3.55900e+00 1.43370e+00 1.06000e-02 3.62400e+00 1.41550e+00 8.02000e-03 3.73200e+00 1.39420e+00 6.85000e-03 3.77500e+00 1.38730e+00 6.60000e-03 3.84700e+00 1.37730e+00 6.96000e-03 3.96900e+00 1.36450e+00 9.16000e-03 4.09900e+00 1.35410e+00 1.11000e-02 4.23900e+00 1.34460e+00 1.45000e-02 4.34800e+00 1.33880e+00 2.00000e-02 4.38700e+00 1.33810e+00 2.30000e-02 4.44400e+00 1.33850e+00 2.60000e-02 4.50500e+00 1.34050e+00 2.90000e-02 4.54700e+00 1.34290e+00 2.93000e-02 4.56000e+00 1.34420e+00 3.00000e-02 4.58000e+00 1.34630e+00 2.85000e-02 4.71900e+00 1.34420e+00 1.73000e-02 4.90400e+00 1.33450e+00 1.29000e-02 5.00000e+00 1.32900e+00 1.20000e-02 5.10000e+00 1.32330e+00 1.25000e-02 5.20000e+00 1.31800e+00 1.34000e-02 5.26300e+00 1.31430e+00 1.40000e-02 5.40000e+00 1.30620e+00 1.75000e-02 5.55600e+00 1.29720e+00 2.40000e-02 5.71400e+00 1.28900e+00 3.50000e-02 5.74700e+00 1.28730e+00 3.80000e-02 5.78000e+00 1.28600e+00 4.20000e-02 5.81400e+00 1.28510e+00 4.60000e-02 5.84800e+00 1.28540e+00 5.20000e-02 5.88200e+00 1.28810e+00 5.70000e-02 6.06100e+00 1.30160e+00 6.90000e-02 6.13500e+00 1.30900e+00 7.00000e-02 6.25000e+00 1.31720e+00 6.70000e-02 6.28900e+00 1.31890e+00 6.50000e-02 6.32900e+00 1.32040e+00 6.40000e-02 6.36900e+00 1.32200e+00 6.20000e-02 6.41000e+00 1.32240e+00 5.90000e-02 6.45200e+00 1.32150e+00 5.70000e-02 6.49400e+00 1.32040e+00 5.60000e-02 6.57900e+00 1.31810e+00 5.50000e-02 6.66700e+00 1.31710e+00 5.70000e-02 6.75700e+00 1.31810e+00 5.80000e-02 6.89700e+00 1.31950e+00 5.70000e-02 7.04200e+00 1.31930e+00 5.50000e-02 7.14300e+00 1.31900e+00 5.50000e-02 7.24600e+00 1.31910e+00 5.40000e-02 7.35300e+00 1.31800e+00 5.20000e-02 7.46300e+00 1.31630e+00 5.20000e-02 7.56700e+00 1.31540e+00 5.20000e-02 7.69200e+00 1.31540e+00 5.20000e-02 7.81200e+00 1.31550e+00 5.00000e-02 7.93700e+00 1.31450e+00 4.70000e-02 8.06500e+00 1.31190e+00 4.30000e-02 8.19700e+00 1.30680e+00 3.90000e-02 8.33300e+00 1.29930e+00 3.70000e-02 8.47500e+00 1.29250e+00 3.90000e-02 8.69600e+00 1.28390e+00 4.00000e-02 8.92900e+00 1.27400e+00 4.20000e-02 9.09100e+00 1.26720e+00 4.40000e-02 9.25900e+00 1.25990e+00 4.50000e-02 9.52400e+00 1.24510e+00 4.60000e-02 9.80400e+00 1.22240e+00 4.70000e-02 1.00000e+01 1.19910e+00 5.10000e-02 1.02000e+01 1.17150e+00 6.50000e-02 1.03100e+01 1.15530e+00 7.50000e-02 1.04200e+01 1.13700e+00 8.80000e-02 1.05300e+01 1.11810e+00 1.08000e-01 1.06400e+01 1.10130e+00 1.34000e-01 1.07500e+01 1.09080e+00 1.68000e-01 1.08700e+01 1.08730e+00 2.04000e-01 1.10000e+01 1.09250e+00 2.48000e-01 1.11100e+01 1.10650e+00 2.80000e-01 1.13600e+01 1.14780e+00 3.41000e-01 1.16300e+01 1.20200e+00 3.79000e-01 1.19000e+01 1.25820e+00 4.09000e-01 1.22000e+01 1.32310e+00 4.22000e-01 1.25000e+01 1.38570e+00 4.22000e-01 1.28200e+01 1.44480e+00 4.03000e-01 1.29900e+01 1.47170e+00 3.89000e-01 1.31600e+01 1.49620e+00 3.74000e-01 1.33300e+01 1.51650e+00 3.54000e-01 1.35100e+01 1.53330e+00 3.35000e-01 1.37000e+01 1.54900e+00 3.15000e-01 1.38900e+01 1.56280e+00 2.94000e-01 1.40800e+01 1.57320e+00 2.71000e-01