Use COSPAR International Reference Atmosphere 1986 model
[
T
altitude
zonalWind
]
= atmoscira(latitude
, ctype
, coord
, mtype
, month
, action
)
[
implements
the mathematical representation of the Committee on Space Research
(COSPAR) International Reference Atmosphere (CIRA) from 1986 model.
The CIRA 1986 model provides a mean climatology. The mean climatology
consists of temperature, zonal wind, and geopotential height or pressure.
It encompasses nearly poletopole coverage (80 degrees S to 80 degrees
N) for 0 km to 120 km. This provision also encompasses the troposphere,
middle atmosphere, and lower thermosphere. Use this mathematical representation
as a function of pressure or geopotential height.T
altitude
zonalWind
]
= atmoscira(latitude
, ctype
, coord
, mtype
, month
, action
)
This function uses a corrected version of the CIRA data files provided by J. Barnett in July 1990 in ASCII format.
This function has the limitations of the CIRA 1986 model and limits the values for the CIRA 1986 model.
The CIRA 1986 model limits values to the regions of 80 degrees S to 80 degrees N on Earth. It also limits geopotential heights from 0 km to 120 km. In each monthly mean data set, the model omits values at 80 degrees S for 101,300 pascal or 0 m. It omits these values because these levels are within the Antarctic land mass. For zonal mean pressure in constant altitude coordinates, pressure data is not available below 20 km. Therefore, this value is the bottom level of the CIRA climatology.

Array of  

Representation of coordinate type of data type string. Specify:
 

Depending on the value of
 

Mean value type of data type string:
 

Scalar value that selects the month in which the model takes
the mean values. This argument applies only when
 

Action for outofrange input, of data type string. Specify one:


Array of temperatures:
 

If
If
 

Array of zonal winds:

Using the CIRA 1986 model at 45 degrees latitude and 101,300
pascal for January with outofrange actions generating warnings,
calculate the mean monthly values. Calculate values for temperature
(T
), geopotential height (alt
),
and zonal wind (zwind
).
[T, alt, zwind] = atmoscira( 45, 'Pressure', 101300 ) T = 280.6000 alt = 18 zwind = 3.3000
Using the CIRA 1986 model at 45 degrees latitude and 20,000
m for October with outofrange actions generating warnings, calculate
the mean monthly values. Calculate values for temperature (T
),
pressure (pres
), and zonal wind (zwind
).
[T, pres, zwind] = atmoscira( 45, 'GPHeight', 20000, 'Monthly', 10) T = 215.8500 pres = 5.5227e+003 zwind = 9.5000
Use the CIRA 1986 model at 45 and –30 degrees latitude
and 20,000 m for October with outofrange actions generating errors.
Calculate values for temperature (T
), pressure
(pres
), and zonal wind (zwind
).
[T, pres, zwind] = atmoscira( [45 30], 'GPHeight', 20000, 10, 'error') T = 215.8500 213.9000 pres = 1.0e+003 * 5.5227 5.6550 zwind = 9.5000 4.3000
For September, with outofrange actions generating warnings,
use the CIRA 1986 model at 45 degrees latitude and –30 degrees
latitude. Also use the model at 2000 pascal and 101,300 pascal. Calculate
mean monthly values for temperature (T
),
geopotential height (alt
), and zonal wind
(zwind
).
[T, alt, zwind] = atmoscira( [45 30], 'Pressure', [2000 101300], 9) T = 223.5395 290.9000 alt = 1.0e+004 * 2.6692 0.0058 zwind = 0.6300 1.1000
Using the CIRA 1986 model at 45 degrees latitude and 2000 pascal
with outofrange actions generating warnings, calculate annual values.
Calculate values for temperature (T
),
geopotential height (alt
), and zonal wind
(zwind
).
[T, alt, zwind] = atmoscira( 45, 'Pressure', 2000, 'Annual' ) T = 221.9596 5.0998 6.5300 1.9499 1.3000 1.0499 1.3000 alt = 1.0e+004 * 2.6465 0.0417 0.0007 0.0087 0.0001 0.0015 0.0002 zwind = 4.6099 14.7496 0.6000 1.6499 4.6000 0.5300 1.4000
Fleming, E. L., Chandra, S., Shoeberl, M. R., Barnett, J. J., Monthly Mean Global Climatology of Temperature, Wind, Geopotential Height and Pressure for 0120 km, NASA TM100697, February 1988
atmoscoesa
 atmosisa
 atmoslapse
 atmosnonstd
 atmosnrlmsise00
 atmospalt