You asked for data and methods. I didn’t post or make this. I just gave you the sources that were already available to you. If you want to check the sources, go right on ahead. But since you can’t seem to find things on mobile, here’s an excerpt from the sites section of population data.

Our team, therefore, builds and maintains a long-run dataset on population by country, region, and for the world, based on three key sources:

10,000 BCE to 1799: HYDE version 3.2. 1800 to 1949: Gapminder’s Population version 7 1950 onwards: UN World Population Prospects (2022) For former countries: Gapminder’s Systema Globalis The scripts that produce this long-run dataset can be accessed in our GitHub repository.

In all sources we rely on, historical population estimates are based on today’s geographical borders.

We provide a full citation for each source below. If you cite population data for a specific period, please cite the source. For example, for the period 1950 onwards, please cite the UN World Population Prospects. You can add “via Our World in Data” if you downloaded the data from us.

You can find the complete list of the sources used for each country and year here.

And a specific citation from that same site for the prehistoric data…

Full citation: Klein Goldewijk, K., A. Beusen, J.Doelman and E. Stehfest (2017), Anthropogenic land use estimates for the Holocene; HYDE 3.2, Earth System Science Data, 9, 927-953.

The HYDE estimates go up to 2020, but they are only available once per decade for the period 1800–2020. Therefore, from 1800 onwards, when data is available from both HYDE and Gapminder, we favor the Gapminder dataset, as it provides annual estimates

-Posted via Sync for Lemmy.