The following is the list of a(n) and b(n) coefficients defining the model levels, accompanied by the corresponding half-level, ph, and full-level, pf, values of pressure for a surface pressure of 1013.250 hPa. Also provided are the Geopotential and Geometric heights, the temperature and density of the level based on the 1976 version of the International Civil Aviation Organization (ICAO) Standard Atmosphere as described at:

For a description of how model levels should be interpreted see IFS Documentation Part III - Chapter 2, Section 2.2.1.

na [Pa]bph [hPa]pf [hPa]Geopotential Altitude [m]Geometric Altitude [m]Temperature [K]Density [kg/m^3]
00.0000000.0000000.000000-----
12000.0000000.00000020.000010.000031054.9531207.11227.700.015299
24000.0000000.00000040.000030.000023848.7523938.39220.500.047396
36000.0000000.00000060.000050.000020576.1820642.87217.230.080184
48000.0000000.00000080.000070.000018441.8318495.38216.650.112556
59976.1353610.000391100.157490.078716842.5016887.16216.650.144842
611820.5396170.002920121.1638110.660615537.4615575.46216.650.177936
713431.3939260.009194143.6299132.396814400.1514432.78216.650.212887
814736.3569090.020319167.9520155.790913368.2713396.38216.650.250503
915689.2074580.036975194.3569181.154412411.7012435.94216.650.291287
1016266.6105000.059488222.9420208.649411515.5711536.43216.650.335497
1116465.0057340.087895253.7096238.325810670.8710688.77218.790.379468
1216297.6193320.122004286.5963270.15309858.429873.71224.070.420006
1315791.5986040.161442321.4966304.04659074.429087.37229.170.462189
1414985.2696300.205703358.2815339.88918318.898329.77234.080.505834
1513925.5178580.254189396.8118377.54677591.687600.74238.800.550756
1612665.2916620.306235436.9459416.87896892.366899.82243.350.596773
1711261.2288780.361145478.5425457.74426220.256226.34247.720.643717
189771.4062900.418202521.4575500.00005574.585579.46251.920.691426
198253.2120960.476688565.5364543.49704954.564958.41255.950.739742
206761.3413260.535887610.6005588.06854359.594362.57259.810.788493
215345.9142400.595084656.4283633.51443789.433791.69263.520.837482
224050.7176780.653565702.7315679.57993244.363246.01267.060.886460
232911.5693850.710594749.1255725.92852725.332726.50270.440.935106
241954.8052960.765405795.0949772.11022234.222235.00273.630.982992
251195.8897910.817167839.9533817.52411773.951774.44276.621.029552
26638.1489110.864956882.7980861.37571348.751349.04279.381.074046
27271.6265450.907716922.4593902.6287964.47964.62281.881.115511
2872.0635770.944213957.4447939.9520628.86628.92284.061.152716
290.0000000.972985985.8772971.6610352.11352.13285.861.184104
300.0000000.9922811005.4292995.6532147.52147.53287.191.207723
310.0000001.0000001013.25001009.339632.6032.60287.941.221149

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