ARTS built-in documentation server
Workspace Method pnd_fieldZero
Sets pnd_field to zero.
Creates an empty pnd_field of cloudbox size according to
cloudbox_limits and with number of scattering elemements
according to scat_data. If scat_data is not set yet, it will be
filled with one dummy scattering element.
The method works with both scat_data and scat_data_raw.
This method primarily exists for testing purposes.
On the one hand, empty pnd_field runs can be used to test the
agreement between true clear-sky (cloudboxOff) solutions and the
scattering solver solution in factual clear-sky conditions. It is
important to avoid discontinuities when switching from thin-cloud
to clear-sky conditions.
Moreover, scattering calculations using the DOIT method include
interpolation errors. If one is interested in this effect, one
should compare the DOIT result with an empty cloudbox to a clearsky
calculation. That means that the iterative method is performed for
a cloudbox with no particles.
Authors: Claudia Emde, Jana Mendrok