Jcdehart: Created page with "RateAccum calculates accumulated precipitation from radar files. === '''Overview''' === RateAccum calculates accumulated precipitation from radar files in MDV format. Precip..."

2022-07-26T20:27:36Z

Created page with "RateAccum calculates accumulated precipitation from radar files. === '''Overview''' === RateAccum calculates accumulated precipitation from radar files in MDV format. Precip..."

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RateAccum calculates accumulated precipitation from radar files.

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

RateAccum calculates accumulated precipitation from radar files in MDV format. Precipitation is obtained either from previously-estimated rain rates or estimated from the reflectivity field.

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

The following items are required:

* Radar data (MDV format)

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

RateAccum uses one parameter file that includes the basic parameters related to data location and field names, which is similar to the parameter files for the other Radx applications.

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

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

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

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

Program modes of operation

* mode: determines if the program waits for new files (REALTIME) or moves through start and end times specified on the command line (ARCHIVE)

Input data

* input_dir: directory containing radar data in MDV format (if not specified on the command line and if mode = REALTIME)
* field_names: specify the names of the input and output fields and whether the precipitation rates have been converted to depth

Accumulation method

* accum_method: select the desired type of accumulation method (e.g., running, from time of day, total period)

Running Accumulation

* running_accums: specify the accumulation durations and output directories for MDV files

Time of Day Accumulation

* restart_time_of_day: the time (UTC) at which the accumulation restarts
* tod_accum_output_url: output directory for time of day accumulation MDV files

Total Accumulation

* total_accum_output_url: output directory for total accumulation MDV files

=== '''Running RateAccum''' ===

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

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

RateAccum - Revision history

Jcdehart: Created page with "RateAccum calculates accumulated precipitation from radar files. === '''Overview''' === RateAccum calculates accumulated precipitation from radar files in MDV format. Precip..."