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NWFSC Survey Grid – SST Shiny App

An interactive R Shiny application that visualizes Mean Sea Surface Temperature (SST) on the NWFSC survey grid points along the US West Coast.

Features

  • Leaflet map centered on the WA/OR coast.
  • Date picker populated with the valid date range from the NOAA ERDDAP server.
  • Grid points coloured by SST using the viridis colour palette with a legend.
  • Click any point to see its Grid Cell ID, coordinates, and SST value in a popup and sidebar panel.
  • Data are fetched from ERDDAP only when the selected date changes (reactive).

Data Sources

Source Details
SST NOAA ERDDAP – dataset ncdcOisst21Agg_LonPM180 via the rerddap package
Grid surveyjoin::nwfsc_grid (filtered to survey == "NWFSC.Combo")

Prerequisites

  • R ≥ 4.1
  • System libraries (Ubuntu/Debian): libcurl4-openssl-dev, libssl-dev, libxml2-dev, libgdal-dev, libgeos-dev, libproj-dev, libudunits2-dev

Install R packages:

install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev/")
pak::pkg_install(c("shiny", "leaflet", "rerddap", "sf", "dplyr", "viridis"))
pak::pkg_install("DFO-NOAA-Pacific/surveyjoin")

Running the App

shiny::runApp("app.R")

Or from the terminal:

Rscript -e "shiny::runApp('app.R')"

The app will open in your browser. Use the date picker in the sidebar to choose a date; the map will update automatically with SST values for that day.