File : D1.1

Author : Lucia Perugini (CMCC) et al.

The User Requirement Document intends to provide an overview of framework of requirements that the inventory agencies need to fulfil and inform the subsequent working packages for a robust observation-based monitoring and verification system that will improve current country reporting. As GHG Inventories (GHGIs) have to follow a set of requirements established under the UNFCCC and the IPCC guideline and guidance (as approved by the COP), the URD initially provides an overview of current (UNFCCC) and future (Paris Agreement) reporting rules (Chapter 2). Then, to assist the scientific community to better serve the improvement of the Countries’ inventory, the URD synthesize the main terminological issues identified to increase the understanding with the inventory agencies (Chapter 3), as well as providing an overview of the main inventories uncertainties that could give guidance on which sector and gas needs more focus (Chapter 4). Finally, the URD provide a list of requirements (Chapter 5), with the aim of setting the accuracy, targets, coverage and frequency of update for GHG budget product at various temporal and spatial scales.

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Figure 1 : Timeline of the transparency and global stocktake processes under the Paris Agreement