Jcdehart: Created page with "CalcMoisture calculates water vapor pressure and dew point temperature. === '''Overview''' === CalcMoisture calculates water vapor pressure and dew point temperature based o..."

2021-05-20T18:47:44Z

Created page with "CalcMoisture calculates water vapor pressure and dew point temperature. === '''Overview''' === CalcMoisture calculates water vapor pressure and dew point temperature based o..."

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CalcMoisture calculates water vapor pressure and dew point temperature.

=== '''Overview''' ===

CalcMoisture calculates water vapor pressure and dew point temperature based on the refractivity field and the mean temperature and pressure fields from nearby weather stations.

=== '''Prerequesites''' ===

The following items are required:

* Refractivity data (MDV format)
* Weather station data (SPDB database containing station information)

=== '''Parameter file''' ===

CalcMoisture uses one parameter file that describes the location of refractivity and station data.

==== '''Ensure file is up to date''' ====

To obtain the default parameter file, use the following command:

<code lang="bash">/path/to/lrose/install/bin/CalcMoisture -print_params > param_file_name</code>

If you already have a parameter file and simply want to check for (and add) updated parameters while retaining current parameters, use the following command:

<code lang="bash">/path/to/lrose/install/bin/CalcMoisture -params orig_param_file_name -print_params > new_param_file_name</code>

==== '''Important parameters''' ====

Process triggering parameters

* trigger_mode: set whether the program operates on the most recent data (LATEST_DATA) or on archived data (TIME_LIST)
* time_list_trigger: if operating on TIME_LIST mode, specify the start and end time of the data being processed

Process I/O parameters

* n_field: specify the path to the refractivity (N) data and how to identify the N field in files
* output_url: location where files will be saved

Algorithm parameters

* station_url: location of the SPDB files
* station_list: list of stations to calculate the mean temperature and pressure

=== '''Running CalcMoisture''' ===

To check all command line options for CalcMoisture, including debugging options and file paths, type the following command into a terminal.

<code lang="bash">/path/to/lrose/install/bin/CalcMoisture -h</code>

Once your parameter file is complete, use a command similar to the following to run the application:

<code lang="bash">/path/to/lrose/install/bin/CalcMoisture -params param_file_name</code>

The user can also specify the location of cfradial files in the following manner:

<code lang="bash">/path/to/lrose/install/bin/CalcMoisture -f /path/to/cfradial/files/ -params param_file_name</code>

CalcMoisture - Revision history

Jcdehart: Created page with "CalcMoisture calculates water vapor pressure and dew point temperature. === '''Overview''' === CalcMoisture calculates water vapor pressure and dew point temperature based o..."