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Distance Between Brazilian Municipal Centroids and INMET Rainfall Stations

Source: R/mun_stations_distance.R
mun_stations_distance.Rd

A dataset containing the distances between the centroids of Brazilian municipalities and rainfall stations operated by the Brazilian National Institute of Meteorology (INMET). Distances were computed using the Haversine formula.

Usage

mun_stations_distance

Format

A data frame with 501,390 rows and 5 variables:

code_muni

Seven-digit IBGE municipality code.

codigo_wmo

WMO identifier of the INMET rainfall station.

distance

Distance between the municipality centroid and the station, in kilometers.

i

Rank of the station by distance, where 1 indicates the nearest station.

ano

Reference year (2008, 2010, ..., 2024).

Source

Distances computed from municipality centroids and INMET rainfall station coordinates using the Haversine formula.

Details

The dataset covers the period from 2008 to 2024. Because the INMET station network changes over time, distances were calculated for snapshots taken every two years (2008, 2010, 2012, 2014, 2016, 2018, 2020, 2022, 2024).

For each year, each municipality is matched to its 10 nearest INMET stations within the same Brazilian macro-region, ordered by increasing distance. The variable `i` is the rank of the station by proximity to the municipality centroid.

Examples

data(mun_stations_distance)
head(mun_stations_distance)
#>   code_muni codigo_wmo distance i  ano
#> 1   1100015       A939 137.8050 1 2008
#> 2   1100015       A938 216.6878 2 2008
#> 3   1100015       A940 295.1434 3 2008
#> 4   1100015       A925 437.9837 4 2008
#> 5   1100015       A112 517.7160 5 2008
#> 6   1100015       A111 631.3020 6 2008