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n_air_thayer

PURPOSE ^

N_AIR_THAYER Microwave refractive index for Earth's atmosphere

SYNOPSIS ^

function n = n_air_thayer(p,t,e)

DESCRIPTION ^

 N_AIR_THAYER   Microwave refractive index for Earth's atmosphere

   The parameterisation of Thayer (Radio Science, 9, 803-807, 1974).
   See also Eq. 3 and 5 of Solheim et al. (JGR, 104, pp. 9664).
   The expression is non-dispersive.

 FORMAT: n = n_air_thayer(p,t,h2o)

 OUT: n   Refractive index (only real part).
 IN:  p   Pressure.
      t   Temperature
      e   Water vapour partial pressure

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

DOWNLOAD ^

n_air_thayer.m

SOURCE CODE ^

0001 % N_AIR_THAYER   Microwave refractive index for Earth's atmosphere
0002 %
0003 %   The parameterisation of Thayer (Radio Science, 9, 803-807, 1974).
0004 %   See also Eq. 3 and 5 of Solheim et al. (JGR, 104, pp. 9664).
0005 %   The expression is non-dispersive.
0006 %
0007 % FORMAT: n = n_air_thayer(p,t,h2o)
0008 %
0009 % OUT: n   Refractive index (only real part).
0010 % IN:  p   Pressure.
0011 %      t   Temperature
0012 %      e   Water vapour partial pressure
0013 
0014 function n = n_air_thayer(p,t,e)
0015 
0016 rqre_element_math( p, t );
0017 rqre_element_math( p, e );
0018   
0019 n = 1 + ( 77.6e-8 * ( p - e ) + ( 64.8e-8 + 3.776e-3 ./ t) .* e ) ./ t;

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