The traceur.def Input File
What is it for?
Tracers need to be listed in traceur.def.
Characteristics of the tracers can be also specified in traceur.def.
What is a tracer?
Tracers are elements which will be defined at each grid point and tracked in the model. They may interact with the atmosphere in different ways.
The model may include different types of tracers:
- condensed species (e.g., CO2, H2O, dust)
- chemically active species
- radiatively active gases (e.g., water vapor)
In the code, all tracers are stored in one three-dimensional array q, the third index of which corresponds to each individual tracer. In input (“start.nc”, “startfi.nc”) [1] and output files tracers are stored separately using their individual names. Loading specific tracers requires that the approriate tracer names are set in the traceur.def file, and specific computations for given tracers (e.g. computing the water or CO2 cycles) is controlled by setting the corresponding options in the callphys.def file [2].
Structure
Number of tracers need to be specified, followed by tracers names.
Example
The following example will set up water tracers to compute water cloud and water cycle in general.
2 h2o_vap h2o_ice
An update version named ModernTrac-v1 need to be used
