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 2016, 14 meetings of the EPNB have been organized, many of which coinciding with regular task force meetings. The most recent one, EPNB-14, was organized as a virtual meeting, September 29, 2016.

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 six 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. 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).

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

New challenges of EPNB refer to extend the practical application of the existing guidance documents by applying to countries, and to making guidance useful globally. This is in contribution to the project "Towards INMS", a global activity intending to guide to an International Nitrogen Management System.

These issues will be discussed at the upcoming EPNB-15 in Aarhus, DK, June 30, 2017 (9.00 - 12.30). The meeting will be held in conjunction with TFRN-12. Please register with TFRN-12 (see the respective Tab on this page) to also attend the EPNB meeting.

Preliminary agenda of EPNB-15:

  1. Update on “Energy” and “Waste” annex, road towards finalization
  2. Coverage of reviews received, call for adoption of existing GD annexes by the TFRN
  3. Recent country activities, current plans and reporting
  4. Status of “Towards INMS”
  5. Towards INMS Task 1.1, National N budgets, and EPNB
  6. Towards INMS Task 1.2, Farm N budgets, and EPNB
  7. Publications and Outreach
  8. AOB


EPNB sends updates on their activities in an e-mail newsletter, in addition to material posted here. 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.