Links Configuration File¶

The links configuration file (config_links.yaml) centralizes and manages URLs for external data services, such as IMERG precipitation datasets. Maintaining these links in a configuration file simplifies updates and ensures that the pipeline remains compatible with evolving data access protocols. A representative snippet of the configuration file is shown below.

precipitation: 
  base_urls:
    before: "https://jsimpsonhttps.pps.eosdis.nasa.gov/imerg/gis/early/"
    year:   "https://jsimpsonhttps.pps.eosdis.nasa.gov/imerg/gis/"
    after:  "https://jsimpsonhttps.pps.eosdis.nasa.gov/imerg/gis/early/"

  file_pattern:
    prefix: "3B-HHR-E.MS.MRG.3IMERG."
    suffix: "-S233000-E235959.1410.V07B.1day.tif"

How to update the link¶

To ensure that the pipeline accesses the latest data, follow these steps to update the configuration:

Step 1: Check the latest dataset version
Visit the official IMERG data directory through link.

Step 2: Identify the prefix and suffix
View the prefix and suffix by hovering over the file names, or by copying a file link and pasting it into the browser to check the prefix and suffix details.

• For example, lets say that prefix on the file link is 3B-HHR-E.MS.MRG.3IMERG.
• Suffix for the file link is -S213000-E235959.1410.V07D.3day.tif
• In the suffix, pay particular attention to the version segment (V07D) part as this indicates the latest release.

Step 3: Update the configuration file
Replace the old prefix or suffix with the updated values:

• suffix: -S233000-E235959.1410.V07D.1day.tif.
• prefix: 3B-HHR-E.MS.MRG.3IMERG.