Resumen de Ammonia Levels In Different Kinds Of Sampling Sites In The Central Iberian Peninsula

María Aranzazu Revuelta, Begoña Artiñano Rodríguez de Torres, Francisco Javier Gómez Moreno, M. Viana, Cristina Reche Andúgar, Xavier Querol Carceller, A.J. Fernández, José Luis Mosquera, María Lourdes Núñez Martí, Manuel Pujadas Cordero, A. Herranz, B. López, F. Molero, Juan Carlos Bezares, Esther Coz Diego, Magdalena Palacios Gómez, M. Sastre, José Manuel Fernández Guisuraga, Pedro Salvador, Begoña Aceña Moreno

• Ammonia is the Secondary Inorganic Aerosol (SIC) gaseous precursor which has been studied to a lesser extent in the Madrid Metropolitan Area up to date. A study conducted in the city of Madrid with the aim of characterizing levels of ammonia took place in 2011. These campaigns formed part of a larger study conducted in 6 Spanish cities. A time series of weekly integrated ammonia measurements available at an EMEP rural site (Campisábalos) has been used to obtain information on the ammonia rural background in the region. The results point to traffic and waste treatment plants as the main ammonia sources in Madrid. Relevant seasonal differences have not been observed in the Metropolitan Area. The explanation can be related to the fall in the rural background levels during July 2011, which might conceal urban summer emission increases observed in other cities.