[Leondros]

Am I reading their methodology correctly?

https://oxfamilibrary.openrepository...pdf?sequence=5

Overview of the Stockholm Environment
Institute’s approach to calculating emissions by
income group
Oxfam and the Stockholm Environment Institute’s (SEI) approach to estimating how global carbon emissions can be attributed to individuals based on their consumption builds on previous work by Oxfam and the SEI. Other researchers, including Lucas Chancel and Thomas Piketty, have made similar findings.

The approach used in this report follows the methodology outlined in Oxfam
and the SEI’s 2020 report The Carbon Inequality Era, with some changes to the data sources.6 For the 2020 report, multiple data sources were relied upon to address data gaps in emissions, income distribution and income data. However, in this analysis, it was found that the preferred datasets now provide better coverage, enabling a streamlined approach and less dependence on multiple sources for most variables.

We start with national consumption emissions data for 196 countries from
1990 to 2019 from the Global Carbon Atlas, which covers nearly 99% of global emissions. This reflects both the carbon emissions produced in a country and those the net emissions embedded in import trade while excluding those embedded in exports. Emissions measured are for carbon dioxide (CO2) and exclude non-CO2 emissions and emissions from land use, land-use change and forestry (LULUCF) due to limited data.

We allocate national consumption emissions to individuals within each country based on a functional relationship between income and emissions, drawing on the most recent income-distribution data from the World Inequality Database (WID).

Based on numerous studies at national, regional and global levels, we
assume that emissions rise in proportion to income, above a minimum
emissions floor and to a maximum emissions ceiling.These estimates of the
consumption emissions of individuals in each country are then sorted into a
global distribution according to income.

National income data (i.e. gross domestic product(GDP)) is obtained from Penn World Tables (PWT), and gap-filled with data from the World Bank’s World Development Indicators (WDI). The data is expressed in 2017 US dollars (USD) purchasing power parity (PPP), which adjusts for differences in purchasing power between different countries and regions. Population numbers for the SEI estimates are also from PWT and WDI up to 2019.

Lol what? So the a key finding of their report was that most of the carbon emissions are at the top income and that was a key assumption of their allocation of carbon - by income? What?!