full-level pressures:
----------------------------------------------------------------------
  p(k) = ap(k) + b(k)*ps [Pa]

  ps: Surface Air Pressure [Pa]
----------------------------------------------------------------------
  integer,parameter :: max_nlev_alevel = 80

  real(8),parameter :: ap(max_nlev_alevel) = (/ &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  66.73375032964721d0,  249.3862688402697d0,  &
   500.2933325174431d0,  797.9666556989400d0,  1154.805138975993d0,  &
   1570.659355952966d0,  2044.614261356945d0,  2573.238394707443d0,  &
   3160.801441303603d0,  3819.219950863016d0,  4531.146662755128d0,  &
   5286.280583517781d0,  6079.247825101558d0,  6892.674277457878d0,  &
   7716.055563364047d0,  8524.702057927625d0,  9292.014139793051d0,  &
   9999.938491946634d0,  10628.33996429584d0,  11148.07012209053d0,  &
   11531.50559330951d0,  11768.06968763507d0,  11865.69066691818d0,  &
   11842.51669556518d0,  11719.83565733568d0,  11520.68517409951d0,  &
   11266.74325427571d0,  10976.11244057112d0,  10662.12618846391d0,  &
   10333.07825453340d0,  9992.645533963245d0,  9640.775532932187d0,  &
   9274.836650763294d0,  8896.557095692262d0,  8505.740812412026d0,  &
   8099.703537530543d0,  7680.431073913341d0,  7250.064402486969d0,  &
   6810.914049421766d0,  6365.483150931706d0,  5900.234410364638d0,  &
   5420.164142963778d0,  4953.545702883265d0,  4509.351927890287d0,  &
   4087.393686351663d0,  3687.556677548824d0,  3309.781260857969d0,  &
   2954.058622251314d0,  2620.414604473106d0,  2308.885111262513d0,  &
   2019.496054006603d0,  1752.238280849524d0,  1507.047674359919d0,  &
   1283.769873553251d0,  1082.140543269654d0,  901.7598469237207d0,  &
   742.0627315855353d0,  602.3139663915818d0,  481.5977073761383d0,  &
   378.8075722112002d0,  292.6567842797017d0,  221.7032531648048d0,  &
   164.3846725529659d0,  119.0637663500186d0,  84.05705136760965d0,  &
   57.70309234405453d0,  38.41938776523870d0,  24.73976128032122d0,  &
   15.35822813314666d0,  9.160393471235845d0,  5.231567904940420d0,  &
   2.847886146173920d0,  9.999999776482362d-1                        &
&  /)

  real(8),parameter :: b(max_nlev_alevel) = (/ &
   9.984996139408759d-1, 9.954996216454508d-1, 9.914989694309972d-1, &
   9.854979361385259d-1, 9.769957333205095d-1, 9.659937794443810d-1, &
   9.529914097290787d-1, 9.363182630048926d-1, 9.154880180731755d-1, &
   8.919746112803857d-1, 8.654905472955799d-1, 8.354134228166497d-1, &
   8.022476141714961d-1, 7.664997133334456d-1, 7.287075849476976d-1, &
   6.888213047792955d-1, 6.462246958761493d-1, 6.021007347341492d-1, &
   5.570389519367429d-1, 5.111028039155917d-1, 4.649611458204325d-1, &
   4.187188309990320d-1, 3.731293681143954d-1, 3.289527935082158d-1, &
   2.863695450634375d-1, 2.455808407591380d-1, 2.073866320473996d-1, &
   1.729093617337726d-1, 1.429064170035222d-1, 1.173999845532744d-1, &
   9.595312992083441d-2, 7.818549379795862d-2, 6.363056919123207d-2, &
   5.179135127253032d-2, 4.218411469117877d-2, 3.436793719271061d-2, &
   2.796150044735957d-2, 2.264995192963255d-2, 1.818534095685732d-2, &
   1.438300312018439d-2, 1.115517372203081d-2, 8.427615680201212d-3, &
   6.124783801384643d-3, 4.217221913867343d-3, 2.675028813879341d-3, &
   1.467602915299301d-3, 5.634113614844845d-4, 9.237582623768269d-5, &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0,  0.000000000000000d0,  &
   0.000000000000000d0,  0.000000000000000d0                         &
&  /)