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]
-0.0000000.0000000.000000-----
1988.8358760.0000009.88844.944235855.3136058.30239.440.007193
21977.6762700.00000019.776814.832628442.2928569.87225.090.022955
32966.5166020.00000029.665224.721025101.5325200.85221.750.038836
43955.3569340.00000039.553634.609422928.1723011.00219.580.054908
54944.1972660.00000049.442044.497821318.7721390.36217.970.071117
65933.0375980.00000059.330454.386220042.1620105.43216.690.087433
76921.8701170.00000069.218864.274618982.9819039.73216.650.103350
87909.4414060.00001379.107274.163018075.4618126.91216.650.119250
98890.7070310.00008788.995684.051417281.7017328.72216.650.135150
109860.5283200.00027598.884093.939816576.3316619.59216.650.151050
1110807.7832030.000685108.7724103.828215941.6215981.62216.650.166950
1211722.7490230.001415118.6608113.716615364.7015401.85216.650.182850
1312595.0068360.002565128.5492123.605014835.9114870.55216.650.198750
1413419.4638670.004187138.4376133.493414347.8414380.23216.650.214650
1514192.0097660.006322148.3260143.381813894.6613925.04216.650.230550
1614922.6855470.009035158.3816153.353813468.2613496.80216.650.246585
1715638.0537110.012508169.0545163.718013053.5213080.33216.650.263250
1816329.5605470.016860180.3786174.716612641.1812666.32216.650.280935
1916990.6230470.022189192.3889186.383712231.2312254.76216.650.299695
2017613.2812500.028610205.1222198.755611823.6511845.64216.650.319588
2118191.0292970.036227218.6172211.869711418.4411438.95216.650.340675
2218716.9687500.045146232.9140225.765611015.5711034.66216.650.363019
2319184.5449220.055474248.0547240.484410613.0710630.79219.170.382249
2419587.5136720.067316264.0833256.069010207.8210224.21221.800.402186
2519919.7968750.080777281.0456272.56449800.099815.19224.450.423040
2620175.3945310.095964298.9895290.01759389.899403.75227.120.444844
2720348.9160160.112979317.9651308.47738977.238989.90229.800.467635
2820434.1582030.131935338.0245327.99488562.148573.66232.500.491453
2920426.2187500.152934359.2221348.62338144.618155.04235.210.516334
3020319.0117190.176091381.6144370.41827724.687734.06237.940.542320
3120107.0312500.201520405.2606393.43757302.357310.73240.680.569453
3219785.3574220.229315430.2069417.73376877.766885.19243.440.597764
3319348.7753910.259554456.4813443.34416451.336457.87246.220.627270
3418798.8222660.291993483.8505470.16596025.616031.31248.980.657826
3518141.2968750.326329512.0662497.95845604.745609.68251.720.689139
3617385.5957030.362203540.8577526.46205192.425196.66254.400.720911
3716544.5859380.399205569.9401555.39894791.934795.53257.000.752832
3815633.5664060.436906599.0310584.48554406.044409.09259.510.784601
3914665.6455080.475016627.9668613.49894036.324038.88261.910.815991
4013653.2197270.513280656.6129642.28993683.173685.30264.210.846863
4112608.3837890.551458684.8491670.73103346.693348.45266.400.877102
4211543.1669920.589317712.5573698.70323026.843028.28268.480.906605
4310471.3105470.626559739.5739726.06562723.842725.01270.450.935249
449405.2226560.662934765.7697752.67182437.962438.89272.300.962904
458356.2529300.698224791.0376778.40362169.152169.89274.050.989474
467335.1645510.732224815.2774803.15751917.261917.84275.691.014877
476353.9208980.764679838.3507826.81411682.351682.80277.211.039015
485422.8027340.795385860.1516849.25121464.531464.87278.631.061788
494550.2158200.824185880.6080870.37981263.631263.88279.941.083128
503743.4643550.850950899.6602890.13411079.331079.52281.131.102991
513010.1469730.875518917.2205908.4403911.48911.61282.231.121323
522356.2026370.897767933.2247925.2226759.99760.08283.211.138067
531784.8546140.917651947.6584940.4415624.53624.59284.091.153202
541297.6561280.935157960.5245954.0914504.53504.57284.871.166736
55895.1935420.950274971.8169966.1707399.50399.52285.551.178683
56576.3141480.963007981.5301976.6735309.03309.04286.141.189047
57336.7723690.973466989.7322985.6311232.49232.50286.641.197870
58162.0434270.982238996.8732993.3027167.39167.39287.061.205414
5954.2083360.9891531002.8013999.8373112.26112.26287.421.211831
606.5756280.9942041007.44311005.122267.8867.88287.711.217015
610.0031600.9976301010.84871009.145934.2234.22287.931.220959
620.0000001.0000001013.25001012.049410.0010.00288.091.223803

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