The Convention and its protocols (3
) require annual reporting. This means that the full cycle of the
inventory process as drawn up in Figure 2-1 is also an annual process and it is good practice to
complete this full cycle within one year. The Reporting Guidelines (ECE/EB.AIR/2008/4) require
annual inventories to be consistent over time.
Inventory compilation is a data-intensive process. These data include statistical data on activities
in the country:
• energy statistics
• industrial production statistics and data on installed production technologies
• agriculture statistics
• transport statistics
• demographic data a