Parameters for various processes

Parameters for various processes#

CHIMERE takes into account various processes: deep convection, emissions, transport and mixing, chemistry, etc. A number of choices are available to the user. See CHIMERE plugin for information on how these are done in the yaml.

ideepconv#

The choice of how to take deep convection into account:

  • 0: no deep convection. In this case, the related mass fluxes in METEO.nc are ignored and can therefore be omitted when pre-processing the meteo.

  • 1: CHIMERE will select deep convection automatically according to the resolution in each column (see locvalues), compute the deep convection fluxes from the mass fluxes provided in METEO.nc and take into account the production and loss due to deep convection (see transmix).

XXXX ON A VIRE TIEDKE APPAREMMENT XXXX

useemisb#

A switch to take into account or not BEMISSION. Called optemisb in CHIMERE, if not taken into account, the input file is not read and inemisb remains at 0 for all species(consequently, “Biogenic emissions” are not added up in emissions).

usechemistry#

A switch to take into account or not the chemistry. Condition for calling routine chemistry in prodloss.

useemissions#

A switch to take into account or not both types of emissions. Condition for calling routine emissions in prodloss.

usetransmix#

A switch to take into account or not transport and mixing. Condition for calling routine transmix in prodloss.

usewetdepos#

A switch to take into account or not wet deposition. Condition for calling routine wdeposition in prodloss.

usedepos#

A switch to take into account or not dry deposition. Condition for calling routine deposition in prodloss.

useabsclipconc#

A switch to clip or not small concentrations in absolute value. WARNING: negative concentrations with large absolute values are therefore possible. They are not well treated by the chemistry routine but are required when computing response functions (i.e. cases with no or liner chemistry). See twostep_mod.

clipconc#

The value at which the concentations are clipped (see in twostep_mod), positive.