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********************************************************************************
* *
* Input file for the Lagrangian particle dispersion model FLEXPART *
* Please select your options *
* *
********************************************************************************
1 LDIRECT 1 FOR FORWARD SIMULATION, -1 FOR BACKWARD SIMULATION
20040720 000000 YYYYMMDD HHMISS BEGINNING DATE OF SIMULATION
20040721 120000 YYYYMMDD HHMISS ENDING DATE OF SIMULATION
10800 SSSSS OUTPUT EVERY SSSSS SECONDS
10800 SSSSS TIME AVERAGE OF OUTPUT (IN SSSSS SECONDS)
900 SSSSS SAMPLING RATE OF OUTPUT (IN SSSSS SECONDS)
9999999 SSSSSSS TIME CONSTANT FOR PARTICLE SPLITTING (IN SECONDS)
900 SSSSS SYNCHRONISATION INTERVAL OF FLEXPART (IN SECONDS)
-5.0 CTL FACTOR, BY WHICH TIME STEP MUST BE SMALLER THAN TL
4 IFINE DECREASE OF TIME STEP FOR VERTICAL MOTION BY FACTOR IFINE
3 IOUT 1 CONC. (RESID. TIME FOR BACKWARD RUNS) OUTPUT,2 MIX. RATIO OUTPUT,3 BOTH,4 PLUME TRAJECT.,5=1+4
0 IPOUT PARTICLE DUMP: 0 NO, 1 EVERY OUTPUT INTERVAL, 2 ONLY AT END
1 LSUBGRID SUBGRID TERRAIN EFFECT PARAMETERIZATION: 1 YES, 0 NO
1 LCONVECTION CONVECTION: 1 YES, 0 NO
0 LAGESPECTRA AGE SPECTRA: 1 YES, 0 NO
0 IPIN CONTINUE SIMULATION WITH DUMPED PARTICLE DATA: 1 YES, 0 NO
0 IOUTPUTFOREACHREL CREATE AN OUPUT FILE FOR EACH RELEASE LOCATION: 1 YES, 0 NO
0 IFLUX CALCULATE FLUXES: 1 YES, 0 NO
0 MDOMAINFILL DOMAIN-FILLING TRAJECTORY OPTION: 1 YES, 0 NO
1 IND_SOURCE 1=MASS UNIT , 2=MASS MIXING RATIO UNIT
1 IND_RECEPTOR 1=MASS UNIT , 2=MASS MIXING RATIO UNIT
0 MQUASILAG QUASILAGRANGIAN MODE TO TRACK INDIVIDUAL PARTICLES: 1 YES, 0 NO
0 NESTED_OUTPUT SHALL NESTED OUTPUT BE USED? YES, 0 NO
2 LINIT_COND INITIAL COND. FOR BW RUNS: 0=NO,1=MASS UNIT,2=MASS MIXING RATIO UNIT
1. Simulation direction, 1 for forward, -1 for backward in time
2. Beginning date and time of simulation. Must be given in format
YYYYMMDD HHMISS, where YYYY is YEAR, MM is MONTH, DD is DAY, HH is HOUR,
MI is MINUTE and SS is SECOND. Current version utilizes UTC.
3. Ending date and time of simulation. Same format as 3.
4. Average concentrations are calculated every SSSSS seconds.
5. The average concentrations are time averages of SSSSS seconds
duration. If SSSSS is 0, instantaneous concentrations are outputted.
6. The concentrations are sampled every SSSSS seconds to calculate the time
average concentration. This period must be shorter than the averaging time.
7. Time constant for particle splitting. Particles are split into two
after SSSSS seconds, 2xSSSSS seconds, 4xSSSSS seconds, and so on.
8. All processes are synchronized with this time interval (lsynctime).
Therefore, all other time constants must be multiples of this value.
Output interval and time average of output must be at least twice lsynctime.
9. CTL must be >1 for time steps shorter than the Lagrangian time scale
If CTL<0, a purely random walk simulation is done
10.IFINE=Reduction factor for time step used for vertical wind
11.IOUT determines how the output shall be made: concentration
(ng/m3, Bq/m3), mixing ratio (pptv), or both, or plume trajectory mode,
or concentration + plume trajectory mode.
In plume trajectory mode, output is in the form of average trajectories.
12.IPOUT determines whether particle positions are outputted (in addition
to the gridded concentrations or mixing ratios) or not.
0=no output, 1 output every output interval, 2 only at end of the
simulation
13.Switch on/off subgridscale terrain parameterization (increase of
mixing heights due to subgridscale orographic variations)
14.Switch on/off the convection parameterization
15.Switch on/off the calculation of age spectra: if yes, the file AGECLASSES
must be available
16. If IPIN=1, a file "partposit_end" from a previous run must be available in
the output directory. Particle positions are read in and previous simulation
is continued. If IPIN=0, no particles from a previous run are used
17. IF IOUTPUTFOREACHRELEASE is set to 1, one output field for each location
in the RLEASE file is created. For backward calculation this should be
set to 1. For forward calculation both possibilities are applicable.
18. If IFLUX is set to 1, fluxes of each species through each of the output
boxes are calculated. Six fluxes, corresponding to northward, southward,
eastward, westward, upward and downward are calculated for each grid cell of
the output grid. The control surfaces are placed in the middle of each
output grid cell. If IFLUX is set to 0, no fluxes are determined.
19. If MDOMAINFILL is set to 1, the first box specified in file RELEASES is used
as the domain where domain-filling trajectory calculations are to be done.
Particles are initialized uniformly distributed (according to the air mass
distribution) in that domain at the beginning of the simulation, and are
created at the boundaries throughout the simulation period.
20. IND_SOURCE switches between different units for concentrations at the source
NOTE that in backward simulations the release of computational particles
takes place at the "receptor" and the sampling of particles at the "source".
1=mass units (for bwd-runs = concentration)
2=mass mixing ratio units
21. IND_RECEPTOR switches between different units for concentrations at the receptor
1=mass units (concentrations)
2=mass mixing ratio units
22. MQUASILAG indicates whether particles shall be numbered consecutively (1) or
with their release location number (0). The first option allows tracking of
individual particles using the partposit output files
23. NESTED_OUTPUT decides whether model output shall be made also for a nested
output field (normally with higher resolution)
24. LINIT_COND determines whether, for backward runs only, the sensitivity to initial
conditions shall be calculated and written to output files
0=no output, 1 or 2 determines in which units the initial conditions are provided.
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