Changes between Version 54 and Version 55 of doc/app/chemistry_parameters


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Timestamp:
Oct 16, 2018 11:25:07 AM (7 years ago)
Author:
forkel
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  • doc/app/chemistry_parameters

    v54 v55  
    2020
    2121Currently PALM-4U includes the following sample of chemistry mechanisms:\\
    22   * CBM4: Carbon Bond Mechanism (Gery et al. 1989, 32 compounds, 81 reactions)\\
    23   * SMOG: Photochemical smog mechanism (13 compounds, 12 reactions)\\
    24   * SIMPLE: Simplified version of SMOG (9 compounds, 7 reactions)\\
    25   * SIMPLEP: SIMPLE plus one tracer named PM10 (10 compounds, 7 real reactions plus one dummy 'reaction')\\
    26   * PHSTAT: Photo-stationary state (3 compounds, 2 reactions)\\
     22  * cbm4: Carbon Bond Mechanism (Gery et al. 1989, 32 compounds, 81 reactions)\\
     23  * smog: Photochemical smog mechanism (13 compounds, 12 reactions)\\
     24  * simple: Simplified version of SMOG (9 compounds, 7 reactions)\\
     25  * simplep: SIMPLE plus one tracer named PM10 (10 compounds, 7 real reactions plus one dummy 'reaction')\\
     26  * phstat: Photo-stationary state (3 compounds, 2 reactions)\\
    2727
    2828Additionally 'mechanisms' are available that describes only the transport of one and two passive Tracers, respectively:\\
    29    * PASSIVE1: Passive tracers (1 compound, 0 reactions)\\
    30    * PASSIVE: Passive tracers (2 compounds, 0 reactions)\\
     29   * passive1: Passive tracers (1 compound, 0 reactions)\\
     30   * passive: Passive tracers (2 compounds, 0 reactions)\\
    3131The list will be extended further.
    3232
     33Currently, areosol compounds can be considered as passive compounds. Implementation of the sectional aerosol module SALSA (Kokkola et al., 2008 Atmos. Chem. Phys., 8, 2469–2483, 2008) is under way at the University of Helsinki.
     34
    3335Ready-to-use chem_gasphase_mod.f90 files for each of the mechanisms are supplied in the subdirectories `Util/chemistry/gasphase_preproc/mechanisms/def_MECH`, where 'MECH' stands for any of the available mechanisms.
    34 For using a different chemical mechanism than the one that comes with checkout of PALM4U (currently PASSIVE), copy your preferred mechanism into the `SOURCE`directory.
    35 
    36 For details about preparing a chem_gasphase_mod.f90 from scratch see `Readme_KPP4PALM.odt` in the PALM4U subdirectory `UTIL/chemistry/gasphase_preproc`.
     36For using a different chemical mechanism than the one that comes with checkout of PALM4U (currently 'passive'), copy your preferred mechanism into the SOURCE directory. Alteratively,  the chemsitry preprocessor can be executed: Enter the directory UTIL/chemistry/gasphase_preproc and apply the run script, i.e. {{{run_kpp4palm.ksh -m MECH}}}, where MECH stands for any the mechanisms listed above.
     37
     38Further details about the use of the preprocessor and how to implement a new chemical mechanism see the Readme-File, This file is also available in the PALM4U subdirectory UTIL/chemistry/gasphase_preproc.
    3739
    3840A main factor influencing atmospheric chemistry are the emissions of reactive compounds. In PALM4U emissions can be applied in three different ways:\\