A GHG national inventory system creates a system of documenting the procedures and processes involved in creating GHG inventories and ensuring data, information, and assumptions are reported and archived. Robust national inventory systems also include QA/QC measures and introduce mechanisms for institutionalizing periodic reporting of necessary data. A high quality inventory sets the foundation for both NAMAs and LEDS (e.g., for scenarios and other inputs) and MRV (reporting). The UNDP guidebook, Managing the National Greenhouse Gas Inventory Process [hyperlink to this publication in Resources], provides detailed guidance on the various steps for establishing a national inventory system.
There is no one specific approach to establishing a National Inventory System (NIS); the NIS should be designed based on national circumstances and the processes already in place for preparing the national GHG inventory as part of the National Communication to the UNFCCC.
The development of a GHG National Inventory System will be an iterative process, as certain components will be updated after the preparation of each GHG inventory.
As noted above, a high quality inventory sets the foundation for both NAMAs and LEDS (e.g., for scenarios and other inputs) and MRV (reporting). However, often GHG inventory teams encounter difficulties in obtaining data either because it is a) confidential (e.g., military, private sector) or b) the format of the data provided makes it difficult to put into the IPCC templates for reporting.
Public/Private Industry (forthcoming)