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This icon runs the FLEXPART Lagrangian dispersion model and converts its outputs to formats Metview can work with. For help on editing icons, please see Editing Icons. The macro language equivalent is |
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| All the date parameters used for FLEXPART Run have yyyymmdd format. Relative dates are allowed: e.g. -1 means yesterday, 0 means today, etc. |
Specifies the FLEXPART executable. Both absolute and relative path can be given here. If left empty Metview will use the MV_FLEXPART_PATH environment variable to locate the executable.
Defines how the location of the input data and the AVAILABLE file is specified. If it is set to Icon the input is specified via a FLEXPART Prepare icon in parameter Input Data. While if it is set to Path then parameters Input Path and Available File Path specifie he input data. The default value is Icon.
Holds a FLEXPART Prepare icon specifying the input data location. Enabled when Input Mode is set to Icon.
Specifies the location of the input data (GRIB) files. Both an absolute and relative path can be given here. Enabled when Input Mode is set to Path.
Specifies the location of the AVAILABLE file. If the default value (the string literal SAME_AS_INPUT_PATH) is set it indicates that the AVAILABLE file is located in the same directory as the input data. Enabled when Input Mode is set to Path.
Specifies the location of the output data files. Both an absolute and relative path can be given here.
Specifies a run label for the FLEXPART simulation.
Specifies the FLEXPART simulation direction in time. The possible values are: Forward and Backward. The default value is Forward.
Specifies the beginning date of the simulation in a YYYYMMDD format. Relative dates are allowed: e.g. -1 means yesterday, 0 means today, etc.
Specifies the beginning time of the simulation in a HH[:MM[:SS]] format.
Specifies the ending date of the simulation in a YYYYMMDD format. Relative dates are allowed: e.g. -1 means yesterday, 0 means today, etc.
Specifies the ending time of the simulation in a HH[:MM[:SS]] format.
Specifies the frequency for the output generation. The output is averaged over the period given in Output Averaging Interval. The format is HHH[:MM[:SS]]. The default value is 3 (hours).
Specifies the averaging interval for the output generation in a HHH[:MM[:SS]] format. If 0 is given here instantaneous values are written into the output files. The default value is 3 (hours).
Specifies the sampling rate used for the averaging of the output. This period must be shorter than the Output Averaging Interval. The format is HHH[:MM[:SS]]. The default value is 1 (hour).
Specifies the type of the gridded output. The possible values are: none (no gridded output), conc (concentration), mixr (mixing ratio) and both (concentration and mixing ratio). The default value is conc.
Specifies if the fluxes should be computed and written out as a gridded output (on or off). The default value is off.
Specifies if the plume trajectories should be computed (on or off). The default value is off.
Specifies the area for the gridded output in degrees in a S/W/N/E format. The default value is -90/-180/90/180.
Specifies the grid resolution for the gridded output in degrees as east_west_resolution/north_south_resolution. The default value is 1/1.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of the species released for the simulation. At all release locations the same species are emitted. The species are identified by the SPECIES_NNN files string the physical and chemical properties of species.
Specifies the concentration units of the released species. The possible options are mass and mixr (mixing ratio). The default value is mass.
Specifies the releases as a group of FLEXPART Release icons.
Specifies the concentration units at the receptor. For forward simulations this the units of the output concentrations. For backward simulations ????? The possible options are mass and mixr (mixing ratio). The default value is mass.
Enables the usage of receptor sites for forward simulations (on or off). When it is enabled the list of receptor sites can be defined via Receptor Names, Receptor Latitudes and Receptor Longitude. The default value is off.
Specifies the list of receptor site names.The default value is an empty list.
Specifies the list of receptor site latitudes. The default value is an empty list.
Specifies the list of receptor site longitudes. The default value is an empty list.
Specifies the list times for the age class calculation. The entries specify the of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the list of height levels of the gridded output. The levels are given in metres units. The default value is an empty list.
Specifies the run time of the forecast . Available when Flextra Prepare Mode is Forecast.
Specifies the forecast steps in hours. Here a list of values is given. Available when Flextra Prepare Mode is Forecast.
Specifies the start date of the period. Available when Flextra Prepare Mode is Period.
Specifies the start time of the period. Available when Flextra Prepare Mode is Period.
Specifies the end date of the period. Available when Flextra Prepare Mode is Period.
Specifies the end time of the period. Available when Flextra Prepare Mode is Period.
Specifies the time step of the period in hours. The allowed values are as follows: 3 or 6. Available when Flextra Prepare Mode is Period.
Specifies the area of the output grid in south/west/north/east format. The default value is -90/-180/90/180.
Specifies the resolution of the output grid in dx/dy format, where dx is the grid increment in east-west direction, while dy is the grid increment in north-south direction (both in units of degrees). The default value is: 1/1.
Only data on and below this model level will be used to generate the FLEXTRA input fields. This level can be specified either as a model level or as a pressure value. In the latter case FLEXTRA Prepare will use the data retrieved for the first date to determine the topmost model level. The default value of this parameter is 1, which means that all the model levels will be used if Flextra Top Level Units is set to Model Levels.
Specifies the units of the value of Flextra Top Level. The allowed values are Model Levels or hPa. The default value is Model Levels.
If this parameter is set On FLEXTRA Prepare checks the existence of the data files to be generated and if they are already in place no new data is retrieved and processed. If it is Off all the fields are always retrieved and processed and the existing data files are overwritten. The same happens to the AVAILABLE file. The existence of a FLEXTRA input GRIB file is checked by using the file name and a set of GRIB API keys from the first message in the file. These keys are as follows: date, time, stepRange, gridType, iDirectionIncrement, jDirectionIncrement, latitudeOfFirstGridPoint, latitudeOfLastGridPoint, longitudeOfFirstGridPoint, longitudeOfLastGridPoint.
Specifies the output directory (it has to be an absolute path) where the GRIB files and the AVAILABLE file will be generated. If this directory does not exist Metview will create it. The output GRIB files have the following naming convention: ENyymmddhh.
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.