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Prism Weather Data

This repository provides a framework for directly downloading weather data from Oregon State's Parameter-elevation Regressions on Independent Slopes Model (PRISM) and works in conjunction with rOpenSci.org/prism.

Included is code that recovers PRISM dailys directly from the API, downloads to a temporary folder, reads a provided polygon shapefile (here, I use the National Hydrography Dataset Plus data at the HUC-12 level), extracts the average weather variable of interest across the polygon (precipitation used here), and exports a lightweight .feather file for use in analyses.

Two scripts are provided.

  • get_prisim_loop.R: This code will execute the extraction one day at a time across the specified timeframe.
  • get_prism_parallel.R This code will recover the available number of processors available on your machine, and run the extraction in parallel.