Atmospheric model parameters

[rvishnkr]

@dylanmikesell will require help to locate these variables which are currently used in WASP, in GeoAcGlobal_main.cpp:

float alt_atmos(alt_atmos) ;
float vel_atm(alt_atmos) ;
float rho_atm(alt_atmos) ;
float temp_atm(alt_atmos) ;
float absorp_atm(alt_atmos) ;
float visc_atm(alt_atmos) ;
float thermal_cond_atm(alt_atmos) ;
float Cp_atm(alt_atmos) ;
float Cv_atm(alt_atmos) ;
float pressure_atm(alt_atmos) ;