The CAMS policy web pages provide a number of products and results that aim at supporting decision and policy making in the management of air pollution episodes. Policy services are based on the air quality regional services capacities to elaborate added- value products describing the evolution of air quality in Europe and the influence of main anthropogenic sources, helping in designing appropriate and efficient policy responses to episode situations.
Moreover, it is expected that the policy products may be useful tools to support communication action of policy makers towards the general public, and regulatory reporting according to the European air quality Directives (2008/50/EC) and their implementation decisions (2011/850/EU).
Policy services take stock of the high modelling capacities and expertise of CAMS teams to provide relevant information on the causes of pollution episodes and their development in the future, and insights about the main drivers that lead to such situations. They vary with the country and the period of the year. CAMS products are well-suited and validated to characterize air pollution background levels in the European countries. It means average air pollution to which citizens are exposed every day. But the accuracy of the tools and models implemented to runs CAMS services is not sufficient to describe in detail air pollution patterns and sources inside the cities, especially hot spot situations near busy roads or industrial sources. For all questions and suggestions interested users are invited to contact the user support.
Annual Air Quality Reports
CAMS publish every year air quality reports describing the status of air pollution in Europe over the years. They provide a description of the evolution of regulatory air pollutant concentrations (nitrogen dioxide, ozone, particulate matter) and an analysis of most severe episodes that occurred over the target year. Two reports are published every year:
- The interim assessment report (IAR) describes the situation (air pollution levels and episodes) of the previous year. It is based on CAMS air quality model results combined with observations from regulatory air quality monitoring networks run everywhere in Europe. However, observations that are reported to the European Environment Agency are not fully validated by the data providers (in the sense of quality assurance criteria implemented along with the air quality Directive) and this is the reason why those reports are âinterim reportsâ.
- The validated annual assessment report (AAR) describes the situation that occurred two years ago and is based on CAMS air quality model results combined with validated observations provides by the European monitoring networks. The report is published later, once quality assurance checking on observation data is achieved. It provides the best estimate of air pollutants concentration patterns and levels in Europe over the target year. Regulatory indicators and metrics, as described in the European air quality Directives, are proposed and are completed by other indicators relevant to describe health and ecosystems exposure to air pollution.
European Air Quality Forecasts
CAMS air quality regional services propose every day up to 3 days forecasts of nitrogen dioxide, ozone and particulate matter concentrations. They are based on an ensemble of seven chemistry-transport models amongst the most reliable in Europe. All model results are available on the CAMS web-pages (forecasted maps and numerical data) with performance indicators. Accuracy and reliability of the results are monitored routinely, comparing the air pollutant concentration forecasted with the actual observations and the diagnostics are gathered in so called âverification reportsâ published every three months. Not only air quality forecasts, but also air quality analyses are available, for the previous days, on the CAMS web pages. Analyses results from assimilation in the model results of observation data to correct potential model errors or biases and build up a more accurate and relevant map of air pollutant concentrations. Therefore policy makers can have an accurate overview of the air pollution episode development over the past days and a reliable estimation of how it can evolve over the next days. All those products are accessible through the links below:
Daily air quality forecasts from CAMS are currently used as boundary conditions for the operational air quality forecasting services in several European cities.
The CAMS green scenario products are intended to help policy users in the design of policy responses to prevent severe air pollution episodes. The green scenarios provide daily regular information on the expected effect that short term measures on either sectoral emissions may have on the forecasted pollution episodes.
The CAMS Air Control Toolbox offers a flexible framework to explore the benefit of emission reduction strategies. For the air quality situation forecasted in the upcoming days, the user can assess the magnitude of improvement that shall be expected from any reduction of the emissions of the four main activity sectors: traffic, industry, residential heating, agriculture.
The source allocation products from CAMS are intended to support authorities to identify the origin of exceedances of air quality limit values. CAMS products may be used for the assessment of the long-range transboundary component of an air pollution episode, in regard to anthropogenic emissions.
The Regional SR product allows focus on capitals in Europe and provides external versus internal contributions to air pollutant concentrations.
- Regional source-receptor calculations (external/internal focus on EU capitals)
Country SR product calculations identify the main contributors to forecasted air pollution episodes for countries in a quantitative manner. As this calculation is computationally expensive, the service is activated for some few pollution episodes of importance during a year.
- 909-394-9062 (external/internal for Countries)
CAMS Policy user workshops
To facilitate interaction with the policy users and make our services closer to usersâ needs and expectations, policy users workshops are organized every year. This is a forum where more recent products and services updates are presented, where policy usersâ feedback is discussed and considered to define together the service evolutions. The last policy users workshop has been hosted by the European Environment Agency in Copenhagen on the 22nd January 2018. PresentationsÂ andÂ minutes can be found on the workshop page.