# P&K 3782

## Parameter of the characteristic calculation

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### Log text

Describing text, which will appear in the log of the characteristic calculation.

### Calculate with sub plumes

The characteristic calculation can be done without the subdivision of the wind direction 10°-sectors in 2°-sectors.

### Calculation for dispersion category

The characteristics calculation can be limited to one dispersion category. The selected categories must have been calculated in the concentration array.

### Calculation for wind velocity

The characteristic calculation can be limited to one wind velocity category. The selected categories must have been calculated in the concentration array.

### Calculation of wind direction

The characteristic calculation can be limited to one wind direction class

### Short time percentile

For the calculation of the short time percentile a value deviating from the usual 98 % can be set.

### Scavenging

For each dispersion category the definition of a scavenging coefficient is possible.

### Pollutant conversion

For each dispersion category the definition of a reaction constant (the reciprocal value of the "life time") for the break down of a pollutant is possible.

### Factor file {this only exists in a special option}

Set the full name of a file with amplifying factors.

The file must have the following line structure:

1. line | Number of operation conditions (A_Bt) |

2. line | Number of wind directions list (A_Wr) |

3. line | Number of wind velocity categories (A_Wg) |

4. line | Number of steps (A_St) |

A_Wr lines | with multiple wind direction intervals at a time (in Decagrad) |

| with A_St amplifying factors. |

All entries are unformatted, must be separated from each other with at least one blank, and must use the dot as the decimal character.

Blank lines will be ignored.