CRETE is a 1D water excitation and radiation transfer code for
sub-millimeter wavelengths based on the RATRAN
code (Hogerheijde & van der Tak
2000).
The code considers rotational transitions of water molecules given
a Haser spherically symmetric distribution.
From the top-level directory, run the configure.sh
shell script to install
crete
.
./configure.sh
This script is a simplified version of the original RATRAN
's configure
script that works for bash
and zsh
shells on Linux, and probably also
MacOS, using the gfortran
compiler.
If you are using the C-shell or the improved version tcsh for interactive use, you can instead run the csh script to install the program:
./configure
After running either of these scripts you can add the definition of the RATRAN
and RATRANRUN environment variables to initialize these variables for login
shells in the shell-specific files ~/.bashrc
or ~/.zshrc
:
export RATRAN=/path/to/crete
export PATH=$PATH:$RATRAN/bin
export RATRANRUN=$RATRAN/run
For ~/.cshrc
:
setenv RATRAN /path/to/crete
set path = ($RATRAN/bin $path)
setenv RATRANRUN $RATRAN/run
The IR radiation is specified as pumping coefficients in the file
amc/getmatrix.f
. One needs to use the g_ir
array for ortho- or
para-water by uncommenting the corresponding definition from Zakharov et al
2007. The model file
includes the heliocentric distance of the source to scale the IR pumping
coefficients.