Many users were missing international data in many areas of ecoinvent version 2. For ecoinvent version 3, we have prepared a framework for international datasets, to improve the international coverage of ecoinvent. One of the steps we have taken is to ensure that all activities in the ecoinvent database have a global dataset covering the average global production.
Such datasets already existed for some datasets in version 2; new is that we introduced global datasets for all activities covered by ecoinvent version 3. While we have made an effort to collect new data for these datasets (and are continuing to do so), it is important to realise that currently, many of these datasets are just extrapolated from one of the existing, regional datasets. These datasets are described as extrapolated in their comments fields and it is important to pay attention to the quality of these datasets.
The increased uncertainty from these extrapolations is quantified by the pedigree matrix approach, which is generally used in the ecoinvent database to describe uncertainty resulting from less than perfect data quality. It is more important than ever to consider these uncertainties in your work.
Therefore, every regional dataset present in the database also has a global dataset covering the average global production. Ideally this global dataset is created individually to accurately reflect the global average based on international data. In cases where data on an average global production were not available, the global dataset may have been extrapolated as a copy of the regional dataset, or as an average of regional data from several regions with adjusted uncertainty information.