2.8 General Assessment of Completeness

Last updated on 10 Dec 2013 11:53 (cf. Authors)

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The German inventory is almost complete regarding the main pollutants, TSP and CO. National total emissions of these pollutants are considered to be representatively and reflect the current emissions situation. Nevertheless there are some cases, where no appropriate method or data is available. It’s assumed, that these cases would not have a noticeable effect to national totals and are in the range of uncertainties.
In terms of heavy metals and POPs, the situation is differently due to the low data availability.

As additional information, there is a specific overview on the completeness of the German POP inventory available. The completeness of the German inventory as a whole has also been assessed in the 2010 stage 3 review report.

The following sections touch on a few source-category-specific approaches for improving the completeness of the inventory.

Fuel combustion

In principle, all combustion-related activities (1.A) are recorded in full within the National Energy Balance (NEB) of the Federal Republic of Germany. Nonetheless, where it is evident that complete coverage is not achieved for certain sub-sectors (i.e. non-commercial use of wood, waste fuels), the NEB is supplemented with further statistical data, surveys etc. However, there are frequent changes within the NEB concerning in particular renewable energies. Such changes in fuel and source categories require considerable research work. Insofar, it's not always possible to implement all data in time. However, based on current information, combustion related activity data can be considered complete.

This also applies for the main pollutants, particulate matter and CO. There may be cases, where a further breakdown of activity data and emission factors would be more appropriate to represent any specfic technology. In such cases, where the share of a specific technology is very small, the influence of a missing sub-division on the national totals is considered small, too.

In some source categories, separation of combustion-related and non-combustion-related emissions from industry requires further verification. In general, for such categories, avoidance of double counting is an important part of quality assurance.

In terms of heavy metals and POPs, emissions are not complete due to a lack of appropriate emission factors. Here, as they may not properly reflect the situation in Germany, and in order to avoid inconsistencies within the German inventory, it is not always advisable to use default emission factors. In addition, fixed default EFs cannot display the influence of technological developments onto the trends of certain emissions. Nevertheless, many country-specific emission factors (which are highly uncertain) are available for all combustion plants. All key categories are reported.

Industrial processes

In the area of industrial processes, for the application of higher tier approaches some use is made of production data from association statistics and of manufacturers' information. In the interest of the inventory's completeness and reliability those data sets get specific QA/QC procedures. The inventory is considered complete for main industrial processes. Nevertheless see last Improvements.

Agriculture

In the area of agriculture, while survey data from a past research project on management systems in animal husbandry are available, an effort is being made to carry out periodic, representative data surveys, in the interest of the inventory's continuing completeness and consistency. Further improvement in terms on completeness can be expected for future submissions.

Other sources

Several research activities were undertaken in order to investigate "other sources" and to evaluate their importance to the German emission inventory. This process has not yet been completed although many improvements have been made.

Explanation on the use of notation keys

Detailed information and explanation on the use of notation keys is part of the data submission and not repeated here.

Next section: 3. Explanation of Key Trends

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