Module 5 - Process Rainfall Data
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.. warning:: The rainfall processing methods shown here are practical grid-based workflows. 
    Depending on project requirements or regulatory standards, alternative scientifically 
    validated approaches should also be explored.

Step 1: Uniform rain on grid
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Real Storm Molina Canyon 9.09 inches in 5 days.
July 27, 2006, to July 31 2006.

.. raw:: html

   <a href="https://alertmap.rfcd.pima.gov/gmap/gmap.html"
      target="_blank"
      rel="noopener noreferrer">
      Data Source
   </a>

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- Open the **Molina Canyon Rain Table.txt** file and copy the rain table.

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- Find the rain editor in QGIS and ensure 9.09 inches are used in the uniform rainfall total.
- Add a new Time Series table and name it Molina 5 Day 2.

- If necessary, reselect the Molina 5 Day 2 pattern, as the plot may not update automatically.

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- Select the first cell and Paste the Rainfall data into the table editor.
- If necessary, click auto range.

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Step 2: Depth point reduction
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- Find the Gage data in the Rain Group.

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- Check the Spatial Variation and click the AR button.
- Fill the form and click OK.
- If the Raster is missing Check the Rain Group ON.

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Step 3: Realtime Rainfall (ERA Copernicus)
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.. note:: This step replaces the Uniform rainfall data with realtime data for the same storm.
    Future versions of this module will include processing NEXRAD Data.  

- Check the Realtime Rainfall box and click the Add Raster button.

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- Load the July storm NetCDF file that contains the ERA Rainfall data from the Copernicus Reflectivity.

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- The interpolator will process the realtime rainfall.
- Click the FLO-2D Info button on the FLO-2D tool bar.
- Zoom into the rainfall area that has 9 inches of rainfall.
- Click a grid element to see a sample of the Copernicus data.
- This is something like NEXRAD reflectivity but for the whole world.
- It can be easily downloaded and gage calibrated to a storm event with gages.

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Step 4: Review the Copernicus Downloader
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- Review these tasks instead of performing them.

.. raw:: html

   <a href="https://cds.climate.copernicus.eu/datasets/reanalysis-era5-land?tab=download " target="_blank" rel="noopener noreferrer">
       Open Link
   </a>

- An account is required to download this Open-Source data.
- Find the precipitation group.

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- Select the storm year

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- Select the month and days of the storm

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- Select all times

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- Set up the subregion

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- Set the data and download format.

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- Log-in to a free account to accept the terms and process the request.

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