2.3 Gathering of Data
The availability of data is the limiting factor for selection of the most appropriate emission quantification methods (e.g., detailed approach, mid-tier approach, pragmatic approach). Emission data (E), activity data (A), emission factors (EF), concentration factors (CF), and distribution factors (DF) were gathered from different sources:
- individual contact with emission inventory responsible in different EU countries;
- information/reports from international organizations and databases, such as the European Commission, the E-PRTR database, North Sea Conferences, OSPAR, HELCOM, ICPR (International Conference for the Protection of the Rhine), and EMEP/CORINAIR emission inventory guidelines;
- close cooperation of industry experts; and
- the open literature.