A paper describing ASAD has been published in: Computer Physics
Communications, 105, 197-215 (1997).
ASAD is being actively used by groups in the UK, Germany, Japan
and the USA.
User supplies a list of chemical species and reactions to define
the chemical scheme. No code needs to be written.
ASAD understands common approximations such as chemical families
and the steady state aproximation.
Several time integration schemes are built-in, including an efficient
scheme suitable for use with 3D transport models or GCMs.
ASAD can be used in box, 1D, 2D or 3D models without any code changes.
Only the calling routine from the model needs to be altered.
ASAD includes interface routines for photolysis, heterogeneous
reactions, ground emissions, wet/dry deposition code supplied by
A reaction database (compiled from published IUPAC and JPL kinetic
data assessments) is included for building your own chemistry schemes.
ASAD is written in standard FORTRAN77 and will run on virtually
any computer with a FORTRAN compiler.