L62 model level definitions

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:

 

 

 

 

 

 

n a [Pa] b ph [hPa] pf [hPa] Geopotential Altitude [m] Geometric Altitude [m] Temperature [K] Density [kg/m^3]
- 0.000000 0.000000 0.000000 - - - - -
1 988.835876 0.000000 9.8884 4.9442 35855.31 36058.30 239.44 0.007193
2 1977.676270 0.000000 19.7768 14.8326 28442.29 28569.87 225.09 0.022955
3 2966.516602 0.000000 29.6652 24.7210 25101.53 25200.85 221.75 0.038836
4 3955.356934 0.000000 39.5536 34.6094 22928.17 23011.00 219.58 0.054908
5 4944.197266 0.000000 49.4420 44.4978 21318.77 21390.36 217.97 0.071117
6 5933.037598 0.000000 59.3304 54.3862 20042.16 20105.43 216.69 0.087433
7 6921.870117 0.000000 69.2188 64.2746 18982.98 19039.73 216.65 0.103350
8 7909.441406 0.000013 79.1072 74.1630 18075.46 18126.91 216.65 0.119250
9 8890.707031 0.000087 88.9956 84.0514 17281.70 17328.72 216.65 0.135150
10 9860.528320 0.000275 98.8840 93.9398 16576.33 16619.59 216.65 0.151050
11 10807.783203 0.000685 108.7724 103.8282 15941.62 15981.62 216.65 0.166950
12 11722.749023 0.001415 118.6608 113.7166 15364.70 15401.85 216.65 0.182850
13 12595.006836 0.002565 128.5492 123.6050 14835.91 14870.55 216.65 0.198750
14 13419.463867 0.004187 138.4376 133.4934 14347.84 14380.23 216.65 0.214650
15 14192.009766 0.006322 148.3260 143.3818 13894.66 13925.04 216.65 0.230550
16 14922.685547 0.009035 158.3816 153.3538 13468.26 13496.80 216.65 0.246585
17 15638.053711 0.012508 169.0545 163.7180 13053.52 13080.33 216.65 0.263250
18 16329.560547 0.016860 180.3786 174.7166 12641.18 12666.32 216.65 0.280935
19 16990.623047 0.022189 192.3889 186.3837 12231.23 12254.76 216.65 0.299695
20 17613.281250 0.028610 205.1222 198.7556 11823.65 11845.64 216.65 0.319588
21 18191.029297 0.036227 218.6172 211.8697 11418.44 11438.95 216.65 0.340675
22 18716.968750 0.045146 232.9140 225.7656 11015.57 11034.66 216.65 0.363019
23 19184.544922 0.055474 248.0547 240.4844 10613.07 10630.79 219.17 0.382249
24 19587.513672 0.067316 264.0833 256.0690 10207.82 10224.21 221.80 0.402186
25 19919.796875 0.080777 281.0456 272.5644 9800.09 9815.19 224.45 0.423040
26 20175.394531 0.095964 298.9895 290.0175 9389.89 9403.75 227.12 0.444844
27 20348.916016 0.112979 317.9651 308.4773 8977.23 8989.90 229.80 0.467635
28 20434.158203 0.131935 338.0245 327.9948 8562.14 8573.66 232.50 0.491453
29 20426.218750 0.152934 359.2221 348.6233 8144.61 8155.04 235.21 0.516334
30 20319.011719 0.176091 381.6144 370.4182 7724.68 7734.06 237.94 0.542320
31 20107.031250 0.201520 405.2606 393.4375 7302.35 7310.73 240.68 0.569453
32 19785.357422 0.229315 430.2069 417.7337 6877.76 6885.19 243.44 0.597764
33 19348.775391 0.259554 456.4813 443.3441 6451.33 6457.87 246.22 0.627270
34 18798.822266 0.291993 483.8505 470.1659 6025.61 6031.31 248.98 0.657826
35 18141.296875 0.326329 512.0662 497.9584 5604.74 5609.68 251.72 0.689139
36 17385.595703 0.362203 540.8577 526.4620 5192.42 5196.66 254.40 0.720911
37 16544.585938 0.399205 569.9401 555.3989 4791.93 4795.53 257.00 0.752832
38 15633.566406 0.436906 599.0310 584.4855 4406.04 4409.09 259.51 0.784601
39 14665.645508 0.475016 627.9668 613.4989 4036.32 4038.88 261.91 0.815991
40 13653.219727 0.513280 656.6129 642.2899 3683.17 3685.30 264.21 0.846863
41 12608.383789 0.551458 684.8491 670.7310 3346.69 3348.45 266.40 0.877102
42 11543.166992 0.589317 712.5573 698.7032 3026.84 3028.28 268.48 0.906605
43 10471.310547 0.626559 739.5739 726.0656 2723.84 2725.01 270.45 0.935249
44 9405.222656 0.662934 765.7697 752.6718 2437.96 2438.89 272.30 0.962904
45 8356.252930 0.698224 791.0376 778.4036 2169.15 2169.89 274.05 0.989474
46 7335.164551 0.732224 815.2774 803.1575 1917.26 1917.84 275.69 1.014877
47 6353.920898 0.764679 838.3507 826.8141 1682.35 1682.80 277.21 1.039015
48 5422.802734 0.795385 860.1516 849.2512 1464.53 1464.87 278.63 1.061788
49 4550.215820 0.824185 880.6080 870.3798 1263.63 1263.88 279.94 1.083128
50 3743.464355 0.850950 899.6602 890.1341 1079.33 1079.52 281.13 1.102991
51 3010.146973 0.875518 917.2205 908.4403 911.48 911.61 282.23 1.121323
52 2356.202637 0.897767 933.2247 925.2226 759.99 760.08 283.21 1.138067
53 1784.854614 0.917651 947.6584 940.4415 624.53 624.59 284.09 1.153202
54 1297.656128 0.935157 960.5245 954.0914 504.53 504.57 284.87 1.166736
55 895.193542 0.950274 971.8169 966.1707 399.50 399.52 285.55 1.178683
56 576.314148 0.963007 981.5301 976.6735 309.03 309.04 286.14 1.189047
57 336.772369 0.973466 989.7322 985.6311 232.49 232.50 286.64 1.197870
58 162.043427 0.982238 996.8732 993.3027 167.39 167.39 287.06 1.205414
59 54.208336 0.989153 1002.8013 999.8373 112.26 112.26 287.42 1.211831
60 6.575628 0.994204 1007.4431 1005.1222 67.88 67.88 287.71 1.217015
61 0.003160 0.997630 1010.8487 1009.1459 34.22 34.22 287.93 1.220959
62 0.000000 1.000000 1013.2500 1012.0494 10.00 10.00 288.09 1.223803

A description of how model levels should be interpreted is available here.