The consortium is pleased to announce the publication of two best practice guides derived from the activities of the project. Best practice guide for the preparation of static primary NO2 reference standards and Best practice guide for the use of static and dynamic gas standards at monitoring stations including the evaluation of measurement uncertainty. Best… Read More

Although the Metrology for nitrogen dioxide (MetNO2) project has come to a close, we would like to share with you our Final Report and Final Summary. The research leading to these results was made possible by the European Union through the European Metrology Programme for Innovation and Research (EMPIR). We would also like to thank… Read More

MetNO2 project leader, Dave Worton from NPL has published an opinion article entitled “Future Adoption of Direct Measurement Techniques for Regulatory Measurements of Nitrogen Dioxide: Drivers and Challenges” in the Viewpoint section of the American Chemical Society’s Journal of Environmental Science and Technology ( This article describes the important of atmospheric nitrogen dioxide (NO2) and… Read More

A successful final stakeholder meeting for the MetNO2 project was held earlier today. Project Co-Ordinator Dave Worton (NPL) took the stakeholders through an introduction to the project, and this was followed by presentations on WP1 by Stefan Persijn; WP2 by Tatiana Macé (LNE) and WP3 by Javis Nwaboh (PTB) with much discussion on the work… Read More

As a result of the global coronavirus pandemic the MetNO2 has been extended by 3 months until August 31st 2020. This will provide the necessary time to facilitate the completion of all project deliverables that were impacted by lab shutdowns and other disruptions associated with COVID-19.… Read More

MetNO2 project coordinator Dave Worton chaired a virtual scientific session at the European Geosciences Union (EGU) General Assembly. The session was within the Atmospheric Sciences Divison (AS5.11) and was entitled ‘Atmospheric gases and particles: metrology, quality controlled and measurement comparability’. This session was organized as a collaboration between NPL (Dave Worton, Paul Brewer, Paul Quincey),… Read More

The preliminary results of CCQM-K74.2018 10 µmol mol-1 NO2 in nitrogen were discussed in two virtual web meetings during April. The preliminary results highlighted the challenges of preparing NO2 reference materials. Outputs from the MetNO2 project are helping to understand how to determine the most appropriate key comparison reference value that will be used to… Read More

Dave Worton, Project Coordinator of the MetNO2 project, chaired a scientific session at the European Geosciences Union (EGU) General Assembly in Vienna, Austria for the third consecutive year. This annually-convened conference is one of the largest of its kind in Europe, with 16,273 participants from 113 countries in 2019. The session was part of the… Read More

During the 35th GAWTEC training session (7th to 20th October 2018) hosted by Umweltforschungsstation Schneefernerhaus (Zugspitze) and the Meteorological Observatory Hohenpeißenberg (DWD) the importance of the MetNO2 project was highlighted to participants, in particular its relevance to the increasing need to monitor the air quality with respect to NOx and the targeted progress beyond the… Read More