Gridded fossil CO₂ emissions and related O₂ combustion consistent with national inventories 1959-2018.

ABSTRACT: Quantification of CO₂ fluxes at the Earth's surface is required to evaluate the causes and drivers of observed increases in atmospheric CO₂ concentrations. Atmospheric inversion models disaggregate observed variations in atmospheric CO₂ concentration to variability in CO₂ emissions and sinks. They require prior constraints fossil CO₂ emissions. Here we describe GCP-GridFED (version 2019.1), a gridded fossil emissions dataset that is consistent with the national CO₂ emissions reported by the Global Carbon Project (GCP). GCP-GridFEDv2019.1 provides monthly fossil CO₂ emissions estimates for the period 1959-2018 at a spatial resolution of 0.1°. Estimates are provided separately for oil, coal and natural gas, for mixed international bunker fuels, and for the calcination of limestone during cement production. GCP-GridFED also includes gridded estimates of O₂ uptake based on oxidative ratios for oil, coal and natural gas. It will be updated annually and made available for atmospheric inversions contributing to GCP global carbon budget assessments, thus aligning the prior constraints on top-down fossil CO₂ emissions with the bottom-up estimates compiled by the GCP.

SUBMITTER: Jones MW 

PROVIDER: S-EPMC7791114 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature