  There is a wealth of data on air pollution within several users' reach,
including modelled concentrations and depositions as well as observations from
air quality stations. However, data integration to perceive spatial and
temporal trends at the national level is a complex undertaking. The
difficulties are mainly related to the data sources (many files with a lot of
information and in different formats). In addition, the processing of this data
is time-consuming and impractical when the time period under analysis
increases. Furthermore,the processing of spatial-temporal data requires the use
of multiple specific tools, such as geographic information systems software and
statistical, which are not readily accessible to non-specialised users. The
proposed solution is to develop libraries that are responsible for aggregating
different types of data related with pollution. In addition to allowing the
integration of different data, the libraries are also the basis for developing
web applications. The libraries allow the collection of data made available by
the Portuguese Environment Agency (APA) and official modelling results for
Europe. The applications developed will extend the libraries to allow data
processing and representation through Dashboards. These Dashboards provide
access to non-specialised users, namely regarding the trends of pollutants in
each region. The implemented libraries allow the development of projects that
would need access to the same data sources. These Dashboards allow for
simplified access to data and for studies that have so far been beyond the
reach of researchers.

Databases;Digital Libraries