The profile in the atmosphere_file provides the constituents of the atmosphere at the given levels. Where additional levels are introduced and in order to calculate layer properties, an assumption about the variation of the property within the layer is required. These interpolation methods can be changed by the z_interpolate option. Two arguments are required, the property, and the interpolation method:
z_interpolate property interpolation_method
Properties which may be specified are:
O3, O2, H2O, CO2, NO2, BRO, OCLO, HCHO

T

temperature (here linmix is not suitable)
Possible interpolation methods are:
linear

The specified property (number density of the gas or temperature) varies linearly with height.
log

The specified property (number density of the gas or temperature) varies logarithmically with height. This is a reasonable option for all well mixed trace gases.
linmix

This option is only possible for gas profiles. The mixing ratio of the gas (assuming a logarithmically varying air density) varies linearly with height.
For all gas densities the default interpolation method is linmix, for temperature it is linear.





Arve Kylling 2010-03-10