KGSIR on carbon budget estimates updates with the latest insights on forcing, variability and feedbacks

Summary
D5.3 (M48, IMPERIAL, CLIMATE ANALYTICS, UNIVLEEDS, CNRS): KGSIR on carbon budget estimates updates with the latest insights on forcing, variability and feedbacks, showing clearly how different uncertainties and short-lived climate forcer pathways affect budgets. Timed to meet IPCC AR6 WGI literature cut-off date and feed into Chapter 5 (Global carbon and other biogeochemical cycles and feedbacks). (Task 5.1.3 and 4.3.1).