FILE std.atmos VERSION 1.3
CHANGE TIME 94/10/06 14:50:58
ACCESS TIME 94/10/06 14:51:00


                        STANDARD ATMOSPHERE

    Computed in March 1965 by Roy Jenne at NCAR.

    Based on the following constants in the book, US Standard Atmosphere,
    is within .05m of the 1954 ICAO Atmosphere in their common range.

    PZERO   =  1013.250 mb
    G       =   980.665
    R       = 2870530.7 ergs per gm deg K = 83143200 / 28.9644
    ABSZERO =   -273.15 deg K (redefined 1954 Kelvin)

       Base to Top of Layer   deg K Base    deg C      Temp. Gradient
          Dynamic Meters                               deg C / Dynamic Meter
            0.0 to 11000.0      288.15      15.00        -.0065
        11000.0 to 20000.0      216.65     -56.50        0.
        20000.0 to 32000.0      216.65     -56.50         .0010
        32000.0 to 47000.0      228.65     -44.50         .0028
        47000.0 to 52000.0      270.65     - 2.50        0.
        52000.0 to 61000.0      270.65     - 2.50        -.0020
        61000.0 to 79000.0      252.65     -20.50        -.0040
        79000.0 to 88743.0      180.65     -92.50        0.

*** NOTE - USE stdatm76.f to compute the 1976 Standard Atmosphere.

Manda-                                  Tempera-
 tory  Pressure    Height      Height     ture     Density
Level    mb        meters       feet     deg C    kg / m**3   Comments
  x     1000.0      110.88      363.79    14.28   1.2120118   Boundary Layer
         950.0      540.34     1772.76    11.49   1.1627031   Troposphere
         900.0      988.50     3243.11     8.57   1.1128979   Troposphere
  x      850.0     1457.30     4781.17     5.53   1.0625631   Troposphere
         800.0     1948.99     6394.32     2.33   1.0116615   Troposphere
         750.0     2466.23     8091.29    -1.03    .9601506   Troposphere
  x      700.0     3012.18     9882.49    -4.58    .9079816   Troposphere
         650.0     3590.69    11780.47    -8.34    .8550980   Troposphere
         600.0     4206.43    13800.61   -12.34    .8014340   Troposphere
         550.0     4865.22    15962.00   -16.62    .7469112   Troposphere
  x      500.0     5574.44    18288.84   -21.23    .6914357   Troposphere
         450.0     6343.62    20812.40   -26.23    .6348926   Troposphere
  x      400.0     7185.44    23574.27   -31.71    .5771387   Troposphere
         350.0     8117.27    26631.46   -37.76    .5179907   Troposphere
  x      300.0     9163.96    30065.48   -44.57    .4572068   Troposphere
   o     250.0    10362.95    33999.16   -52.36    .3944543   Troposphere
  xo     200.0    11784.05    38661.58   -56.50    .3215949   Tropopause
  xo     150.0    13608.42    44647.04   -56.50    .2411961   Tropopause
  xo     100.0    16179.72    53083.09   -56.50    .1607974   Tropopause
   o      90.0    16847.88    55275.20   -56.50    .1447177   Tropopause
   o      80.0    17594.82    57725.78   -56.50    .1286379   Tropopause
   o      70.0    18441.62    60504.01   -56.50    .1125582   Tropopause
   o      60.0    19419.19    63711.24   -56.50    .0964785   Tropopause
  xo      50.0    20576.17    67507.11   -55.92    .0801855   Stratosphere
   o      40.0    21999.66    72177.38   -54.50    .0637307   Stratosphere
   o      30.0    23848.65    78243.59   -52.65    .0473972   Stratosphere
   o      20.0    26481.22    86880.65   -50.02    .0312254   Stratosphere
   o      10.0    31054.64   101885.29   -45.45    .0152991   Stratosphere
   o       9.0    31757.97   104192.81   -42.97    .0137268   Stratosphere
   o       8.0    32547.98   106784.71   -42.97    .0121074   Stratosphere
   o       7.0    33452.63   109752.71   -40.43    .0104787   Stratosphere
   o       6.0    34509.35   113219.66   -37.47    .0088690   Stratosphere
   o       5.0    35776.55   117377.13   -33.93    .0072812   Stratosphere
   o       4.0    37353.47   122550.74   -29.51    .0057194   Stratosphere
   o       3.0    39429.49   129361.84   -23.70    .0041896   Stratosphere
           2.0    42439.85   139238.37   -15.27    .0027018   Stratosphere
           1.0    47820.08   156890.02    -2.50    .0012872   Stratopause
           0.9    48654.77   159628.52    -2.50    .0011585   Stratopause
           0.8    49587.88   162689.90    -2.50    .0010297   Stratopause
           0.7    50645.75   166160.61    -2.50    .0009010   Stratopause
           0.6    51866.98   170167.24    -2.50    .0007723   Stratopause
           0.5    53305.04   174885.31    -5.11    .0006498   Mesosphere
           0.4    55044.41   180591.90    -8.59    .0005267   Mesosphere
           0.3    57253.58   187839.82   -13.01    .0004017   Mesosphere
           0.2    60304.72   197850.14   -19.11    .0002743   Mesosphere
           0.1    65280.75   214175.69   -37.62    .0001479   Mesosphere

   o about 90% of the world's ozone is contained between 10 and 40km.