This option is used to specify the output altitudes in km above surface altitude. One or more altitudes may be specified in increasing magnitude.
zout 0 1 2 3 4 5 ...
Output altitudes must be within the range defined in the atmosphere_file. Note that zout does not restructure the atmosphere model. Hence, if you specify zout 0.730 and have your atmosphere model in atmosphere_file go all the way down to sea level, i.e. 0.0km., output is presented at 0.730km and calculations performed with an atmosphere between 0.0 and 0.730 km (and above of course). If you want calculations done for e.g. an elevated site you have to restructure the atmosphere model and make sure it stops at the appropriate altitude. This you may either due by editing the atmosphere file or by using altitude. Note that for rte_solver polradtran the atmosphere file must contain the altitudes specified by zout. You can also use toa for top of atmosphere and sur for surface altitude and cpt for cold point tropopause.

Instead of specifying the altitudes in km, it is also possible to use keywords as argument for this option. Possible keywords are atm_levels, all_levels, model_levels, model_layers, and model_levels_and_layers. For atm_levels, all levels from the atmosphere_file are used as output levels. For all_levels, all levels (including levels from atmosphere_file, dens_file, cloud files, altitude options) are used as output levels. For model_levels, model_layers, model_levels_and_layers the levels, layers, or both from the ECMWF_atmosphere_file are used as output level. Usage e.g.:

zout model_levels [nlev_max]
With the optional argument nlev_max the user may specify the number of zout layers from the ground.





Arve Kylling 2010-03-10