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ScientificWorldJournal. 2012;2012:603034. doi: 10.1100/2012/603034. Epub 2012 Apr 29.

Trends of rural tropospheric ozone at the northwest of the Iberian Peninsula.

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Department of Chemical Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.


Tropospheric ozone levels around urban and suburban areas at Europe and North America had increased during 80's-90's, until the application of NO(x) reduction strategies. However, as it was expected, this ozone depletion was not proportional to the emissions reduction. On the other hand, rural ozone levels show different trends, with peaks reduction and average increments; this different evolution could be explained by either emission changes or climate variability in a region. In this work, trends of tropospheric ozone episodes at rural sites in the northwest of the Iberian Peninsula were analyzed and compared to others observed in different regions of the Atlantic European coast. Special interest was focused on the air quality sites characterization, in order to guarantee their rural character in terms of air quality. Both episodic local meteorological and air quality measurements along five years were considered, in order to study possible meteorological influences in ozone levels, different to other European Atlantic regions.

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