Spain historical per-capita urban nitrogen rate. — urban_kgn_cap

The per-capita urban-nitrogen-to-agriculture rate, urban_n_reference$urban_n_gg * 1e6 / spain_urban_population, at each urban_n_reference benchmark year build_urban_n() could compute a verified rate for. See data-raw/build_urban_kgn_cap.R for the derivation: every urban_n_reference benchmark year, including 1860, 1900 and 1950, now has its own verified denominator. Most rows use real gridded HYDE baseline-scenario urban population (summed over Spain's cell_polity footprint from whep::build_cell_polity()); the 2018, 2020 and 2022 rows keep the World Bank SP.URB.TOTL urban-population denominator instead, because the local HYDE mirror used to build this table only extends through 2017. Every row is real, verified data; not all rows share the same source.

Usage

urban_kgn_cap_reference

Format

A tibble with columns:

year: Benchmark calendar year.
urban_kgn_cap: Per-capita urban nitrogen applied to agriculture (kg N per person per year).

Source

Derived from urban_n_reference and Spain urban population: HYDE baseline-scenario gridded population (1860-2016 rows) and World Bank indicator SP.URB.TOTL (2018-2022 rows); see data-raw/build_urban_kgn_cap.R.

Examples

urban_kgn_cap_reference
#> # A tibble: 10 × 2
#>     year urban_kgn_cap
#>    <dbl>         <dbl>
#>  1  1860         1.08 
#>  2  1900         0.869
#>  3  1950         0.803
#>  4  1990         0.576
#>  5  2000         0.941
#>  6  2008         1.24 
#>  7  2016         1.33 
#>  8  2018         1.47 
#>  9  2020         1.36 
#> 10  2022         1.60