pypros_run script

If you want to run PyPros form terminal directly, you can use pypros_run script. Now we’ll how it must be called.

pypros_run receives up to six arguments, since two of them are optional. The arguments and their order are the following ones:

Order	Argument	Description	Mandatory
1	tair	Air temperature field file path	☑
2	tdew	Dew point temperature field file path	☑
3	config_file	Configuration file path	☑
4	out_file	Digital Elevation Model file path	☑
5	dem	Digital Elevation Model file path	☐

The configuration file is a .json including the following parameters:

{
 "method": "single_tw",
 "threshold": 1.0,
 "data_format": {"vars_files": ["tair", "tdew", "dem"]},
 "refl_masked": "True"
}

For more information about the pypros_run script configuration parameters, see PyPros Class.

In order to execute the script you must have pyPROS package installed, see Documentation.

A configuration file and sample fields for air temperature, dew point temperature, digital elevation model and radar reflectivity are available in ../sample-data/ directory. We’ll introduce two examples of how pypros_run script is run.

Air temperature single threshold

The configuration file must look like the following one. We’ll set the threshold to 1.0\(^{\circ}\)C.

{
 "method": "single_ta",
 "threshold": 1.0,
 "data_format": {"vars_files": ["tair", "tdew"]},
 "refl_masked": "False"
}

Since we set refl_masked to False we do not have to import any radar reflectivity field. We would execute the script this way:

> pypros_run [path to air temperature field] [path to dew point temperature field] [path to configuration file] [output path]

Wet bulb temperature single threshold

The configuration file should include the following parameters. We’ll set the threshold to 1.5\(^{\circ}\)C.

{
 "method": "single_tw",
 "threshold": 1.5,
 "data_format": {"vars_files": ["tair", "tdew", "dem"]},
 "refl_masked": "True"
}

Since we set refl_masked to True we have to include the radar reflectivity field in the configuration file and as an script argument. In addition, we have also included dem in order to take into account altitude when calculating wet bulb temperature. We would execute the script this way:

> pypros_run [path to air temperature field] [path to dew point temperature field] [path to configuration file] [output path] --dem [path to dem] --refl [path to radar reflectivity file]