Centre on Emission Inventories and Projections

In 2007, the Centre on Emission Inventories and Projections (CEIP) was established by a decision of Executive Body (ECE/EB.AIR/91) to offer to the Parties, the EMEP TFs and centres and other international organizations, its expertise, databases and tools related to air pollutant emission inventories.

CEIP is responsible for coordinating the emission related work of EMEP. The centre contributes to scientific assessment of past trends and current status in air pollution throughout the ECE region and to evaluation of the implementation of the Protocols of the Convention.

Revised mandate for CEIP (ECE/EB.AIR/2018/6)

The functions of the Centre are to:

(a) Compile emission data reported by Parties to the Convention and their import into the CEIP database. Maintain and improve of EMEP/CEIP database system and CEIP website. Adjust the database system (WebDab, RepDab) according to new reporting requirements and reporting formats. Make reported data accessible to public on the web;

(b) Carry out annual quality control of inventories reported under the Convention. Evaluate timeliness, consistency, completeness of submitted data. Plan and organize annual technical in-depth review of submitted inventories. Regularly improve/develop new tests for emission checking. Set up review teams and communicate with Parties. Communicate the results to the Parties and the EMEP Steering Body;

(c) Develop emission data sets for modellers, i.e. develop gridded data of EMEP pollutants for EMEP area. In particular calculate expert estimates for missing data and use “Module based gridding system and proxies for the spatial distribution of gap-filled emission data for the new EMEP grid domain in geographical coordinates (0.1° x 0.1° longitude/latitude). Develop distribution of emissions for Parties which do not report gridded data. Perform checks of gridded data. In transition period provide gridded data also in resolution 50 x 50km EMEP grid if requested;

(d) Support the secretariat by review compliance with reporting obligations: periodic review of compliance with Parties’ reporting obligations, based on emission and projection data submitted to EMEP and available in the WebDab emission database;

(e) Support EMEP by managing review of adjustment applications to emission reduction commitments or inventories and any supporting documentation submitted by Parties in accordance with Executive Body decisions 2012/3, 2012/4 and 2012/12. Set up review teams and communicated with Parties. Maintain the on-line database system for storage and review of approved adjustments and supporting documentation provided by Parties;

(f) Assess emission uncertainties by comparison of Convention data with emission data from other sources - the Joint Research Centre of the European Commission, the International Institute for Applied Systems Analysis (IIASA), United Nations Framework Convention on Climate Change, others - and to the extent possible quantification of the differences;

(g) Cooperate closely with the secretariat, the Task Force on Emission Inventories and Projections and EEA by capacity building activities (trainings, workshops, country visits) in Eastern Europe, the Caucasus and Central Asia. Furthermore, CEIP provides online ad hoc support to technical experts from the region;

(h) Build on the emission related work within EMEP; Cooperate with the other EMEP centers and task forces; AMAP, the Austrian Ministry of Environment, EEA, Joint Research Centre of the European Commission and the European Commission; Participatein relevant meetings organized by the partner organizations and EMEP bodies; contribute to joint reports with other centres;

(i) Carry out other tasks assigned to it by the EMEP Steering Body and the Executive Body.


The Convention on Long-range Transboundary Air Pollution (CLRTAP) has addressed some of the major environmental problems in the UNECE area.


The Convention has been extended by eight protocols and has now 51 Parties [PDF].