EPNB - Expert Panel on Nitrogen Budgets

The Expert Panel on Nitrogen Budgets (EPNB) provides expert guidance to the Task Force on Reactive Nitrogen in providing mass-consistent information of the fate of nitrogen in the environment. It was initiated at the first meeting of the Task Force in Wageningen, Netherlands, in June 2008 as an ad-hoc expert panel. Between 2008 and 2017, 15 meetings of the EPNB have been organized, many of which coinciding with regular task force meetings. EPNB-16 was held in Berlin, in combination with an international workshop on the "German Nitrogen Budget" under the DESTINO project, kindly hosted by the German Environment Agency UBA (May 2-3, 2019). The most recent in-person meeting (EPNB-17) was held in Brussels, October 2, 2019, back-to-back to the regular TFRN meeting (TFRN-14). This was also in conjunction with the Workshop on "Integrated sustainable nitrogen management” co-hosted jointly by the European Commission and TFRN.

EPNB prepared the “Guidance Document on National Nitrogen Budgets”. The document was presented and approved at the 31st meeting of the Executive Body of the Convention on Long-Range Transboundary Air Pollution. The document can be downloaded from here. There is also a French and a Russian version available.

The detailed provisions of creating N budgets for seven out of eight pools defined in the GD (and a general overview on definitions and principles) have now been provided by EPNB. These Annexes to the GD are now available for public review. Please download and use the annexes provided as one file here (~7 MB file size). This file version includes all comments received by September 21, 2016, and now also includes the Energy Annex that has been made available in September 2019.

User feedback has been received, and any user is advised to consider when taking advantage of guidance. Please look into this document.  Additional feedback especially on topics that appear during use of these documents will continue to be highly valued even after full adoption. Please download and fill in the review sheet for your feedback, and send it by e-mail to the EPNB co-chairs (Wilfried Winiwarter, winiwarter(at)iiasa.ac.at, and Markus Geupel, markus.geupel(at)uba.de). With the upcoming inclusion of the Waste Annex and a general harmonization, a complete version will be issued.

We will continue posting constructive suggestions along with the guiding material, before improvements are taken up by EPNB and integrated in updated Annexes.

Developments since EPNB-17 have been presented at the virtual TFRN-15, February 4, 2021. A handout of this presentation is available.

EPNB-18 now has been scheduled for October 5-6. Originally meant as a hybrid meeting, we again have to return to the comfort of Zoom. Details have been shared with members of the updated EPNB distribution list, please e-mail the chairs in case you have not received the information.


The MINUTES of EPNB-17 are available.

Overview presentation (co-chairs)

Final Agenda (some slide sets have been made available, see links)

  1. Guidance document and annexes: Energy Annex (Bettina Schäppi)
  2. Further procedure: Waste Annex
  3. Final results German N budget (Markus Geupel)
  4. Other national applications (national experts): Austria (Ika Djukic), Sweden (Filip Moldan), Latvia (Inga Grinfelde), Ukraine (Lidiya Moklyachuk)
  5. General Discussion
  6. Work plan 2020 - 2021

Several points could not be shared within the session, still avaialble slide sets are shown as links):


EPNB sends updates on their activities in an e-mail newsletter, in addition to material posted here (see EPNB Newsletter April '21). If you wish to become involved, please contact the co-chairs via e-mail. Information on past and current activities, e.g. the minutes of all previous EPNB meetings are also available from this site.