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Specifies the location of the input data files using a FLEXTRA Prepare icon.

FLEXTRA Input Data Path

Specifies the location of the input data files. Both an absolute and relative path can be given here. Enabled when FLEXTRA Input Mode is path.

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Specifies the location of the AVAILABLE file using. The default is SAME_AS_INPUT_PATH, which mean that the AVAILABLE file is located in the same directory as the input data. Enabled when FLEXTRA Input Mode is path.

FLEXTRA Run Mode

Specifies the run mode for the FLEXTRA simulation.  THe possible values are as follows:

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Specifies how the output data (i.e. trajectory waypoints) will be written out into the output file. It can have three values:

• original: The trajectory points are written out into the output file exactly at the computational time steps. In the FLEXTRA terminology these are called flexible time steps.
• interval: The trajectory points are written out into the output file at regular intervals specified by parameter Flextra Output Interval Value. In the FLEXTRA terminology these are called constant time steps.
• both: Two output files will be generated: one for the flexible time steps and one for the constant time steps.

The default value is interval.

Flextra Output Interval Value

Specifies the value used to write the  output data (i.e. trajectory waypoints) out.output frequency when Flextra Output Interval Mode is set to interval or both. The default value is 3, which means 3 hourly output.

Flextra Normal Types

Specifies the list of trajectory types by their numerical IDs when Flextra Run Mode is set to normal. The possible values are as follows:

• 1: Three-dimensional
• 2: Model layer
• 3: Mixing layer
• 4: Isobaric
• 5: Isentropic

The default value is 1 (three-dimensional trajectories).

Flextra Normal Names

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Specifies the trajectory names when Flextra Run Mode is set to normal.

Flextra Normal Latitudes

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Specifies the latitudes of the trajectory start points when Flextra Run Mode is set to normal.

Flextra Normal Longitudes

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Specifies the longitudes of the trajectory start points when Flextra Run Mode is set to normal.

Flextra Normal Levels

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Specifies the levels of the trajectory start points when Flextra Run Mode is set to normal.

Flextra Normal Level Units

Specifies the level types (as numerical IDs) of the trajectory start points when Flextra Run Mode is set to normal. The possible values are as follows:

• 1: Metres above sea level
• 2: Metres above ground level
• 3: hPa

Flextra Cet Types

Specifies the list of trajectory type by their numerical IDs when Flextra Run Mode is set to cet. The possible values are as follows:

• 1: Three-dimensional
• 2: Model layer
• 3: Mixing layer
• 4: Isobaric
• 5: Isentropic

The default value is 1 (three-dimensional trajectories).

Flextra Cet Name

Specifies the trajectory name when Flextra Run Mode is set to cet.

Flextra Cet Area

Specify the geographical area of the start grid by a S/W/N/E list.

Flextra Cet Dx

Specifies the start grid resolution in West-East direction in degrees when Flextra Run Mode is set to cet. The default values is 1.

Flextra Cet  Dy

Specifies the start grid resolution in South-North direction in degrees when Flextra Run Mode is set to cet. The default values is 1.

Flextra Cet Top Level

Specifies the top level of the start grid volume when Flextra Run Mode is set to cet. The default values is 1.

Flextra Cet Bottom Level

Specifies the bottom level of the start grid when Flextra Run Mode is set to cet. The default values is 1.

Flextra Cet  Dz

Specifies the start grid vertical resolution when Flextra Run Mode is set to cet. The default values is 1

Flextra Cet Level Units

Specifies the level types (as numerical IDs) of the start grid when Flextra Run Mode is set to cet. The possible values are as follows:

• 1: Metres above sea level
• 2: Metres above ground level
• 3: hPa

User Exe Path

Specifies a user defined FLEXTRA executable. Both absolute and relative path can be given here. If it is left blank (this is the default) Metview will use the MV_FLEXTRA_EXE environment variable to locate the executable.

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Specifies the units of the mass of the released species. The possible options are mass and mixr. The default value is mass. See the table below to find out what the actual units mean.

for forward simulations:

for backward simulations:

Releases

Specifies the releases as a group of FLEXTRA Release icons. 

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