AcknowledgementsThe CMAQ modelling

Acknowledgements
The CMAQ modelling system was made available by the USEPA
and it is supported by the Community Modelling and Analysis
System (CMAS) Center. Emission datasets and monitoring data
from EMEP, the Spanish and Portuguese Ministries of the Environment
were used. Michel Vedrenne acknowledges support from
UPM and CONACyT (Mexico).