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Finding the Closest INMET Station for Each Municipality

Introduction

Many climate analyses require assigning each municipality to its closest meteorological station. The nearest_stations() function automates this process by identifying the nearest INMET station for every municipality.

This vignette demonstrates how to:


library(climateBR)
library(dplyr)
library(ggplot2)
library(sf)

Preparing the data

The package includes datasets with Brazilian municipalities and INMET weather stations.

data("municipality")
data("inmet_stations")

municipality_pe <- municipality |>
  filter(
    state_muni == "PE",
    code_ibge7 != "2605459" # Fernando de Noronha
  )

inmet_stations_pe <- inmet_stations |>
  filter(state_station == "PE")

Finding the nearest station

Use nearest_stations() to identify the closest station for each municipality.

mun_stations_pe <- nearest_stations(
  municipality = municipality_pe,
  inmet_stations = inmet_stations_pe,
  n = 1
)

head(mun_stations_pe)
#> # A tibble: 6 × 5
#>   state_muni code_ibge7 code_wmo distance station_order
#>   <chr>           <dbl> <chr>       <dbl>         <int>
#> 1 PE            2600054 A301        25.7              1
#> 2 PE            2600104 A350        79.5              1
#> 3 PE            2600203 A307       104.               1
#> 4 PE            2600302 A341        25.2              1
#> 5 PE            2600401 A357         9.32             1
#> 6 PE            2600500 A322        66.1              1

Municipality–station connections

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.