Division 2 USER REQUIREMENTS AND MAIN DOMAINS OF APPLICATION

CAMS shall provide services, categorised into the following five topical domains, grouping data and/or information products according to their main application area:

1. (a)

   air quality and atmospheric composition: these products shall characterise the chemical composition of the atmosphere and provide information on greenhouse gases, reactive gases and aerosols; the products shall be provided at global scale for the entire atmosphere and at refined horizontal resolution over a regional domain covering the Union and neighbouring areas, including the EEA Member States; the products shall include in particular the species relevant for the Union and national legislation as well as international treaties;

2. (b)

   climate forcing: Specialized products shall be provided to quantify the forcing on the Earth System due to atmospheric composition changes induced by human activities;

3. (c)

   ozone layer and UV: information on constituents of particular importance for the stratospheric ozone layer shall be provided, as well as on ultraviolet radiation;

4. (d)

   solar radiation: the domain shall cover radiation products of relevance in the context of solar energy;

5. (e)

   emissions and surface fluxes: CAMS shall also provide information on surface sources and sinks of the main greenhouse gases.

The domains shall not be mutually exclusive and some products may appear in different domains.