f0 varies between 0 and 1 and gives the reactivity of a species relative to that of ozone. For non-reactive species f0 is 0, for slightly reactive it is 0.1 and for highly reactive it is 1.
Dry deposition of gases is switched off by negative D.
- Particles:
rho specifies the density of the substance,
dquer its mean diameter
dsig the measure of variation.
If no detailed information for deposition velocity calculation is available, a constant deposition velocity vd [cm s-1] can be used.
Dry deposition of particles is switched off by negative rho.
can be added at the end of the file, defined as following: Since FLEXPART version 6.0, emission factors can be defined that change the temporal variation of particle releases. This is useful, for instance,
to simulate the typical daily and weekly cycle of anthropogenic emissions. The emission factors are given in the file of the
corresponding species SPECIES_nnn, where nnn is the species number defined in file RELEASES. If no emission variation
information is given, emission rates for species nnn are taken as constant. Release rates can vary with the hour of the day
and with the day of the week, according to the local time at the release location. Emission factors must be 1 on average. 24
hourly as well as 7 daily values must be specified. Furthermore, different disaggregation factors must be given for area sources
and for point sources. FLEXPART distinguishes between the two using the lower altitude of the release box: area sources are
assumed to start below 0.5 m above the ground, whereas point sources are assumed to be higher. Please note that when this
option is used, it is not so easy to determine the maximum number of particles present at a particular time of the model run. It
might then be necessary to increase the parameter maxpart to a higher value than what would otherwise be needed.
