11 mar. 2014

Semirarios IQFR : "Evolution of NO2 levels in Spain from 1996 to 2012 and UVAS retrieval algorithms".

Programa del Ciclo de Seminarios del IQFR 2014

Seminario del Dr. Carlos Cuevas

"Evolution of NO2 levels in Spain from 1996 to 2012 and UVAS retrieval algorithms"

Miércoles 12 de marzo 2014 a las 12:00 horas
    Salón de Actos IQFR -CSIC 


We report the evolution of tropospheric nitrogen dioxide (NO2) over Spain, focused on the densely populated cities of Barcelona, Bilbao, Madrid, Seville and Valencia, during 17 years, from 1996 to 2012. This data series combines observations from in-situ air quality monitoring networks and the satellite-based instruments GOME and SCIAMACHY. The results in these cities show a smooth decrease in the NO2 concentrations of ~2% per year in the period 1996-2008, due to the implementation of emissions control environmental legislation, and a more abrupt descend of ~7% per year from 2008 to 2012 as a consequence of the economic recession. In the whole Spanish territory the NO2 levels have been reduced by ∼22% from 1996 to 2012. Statistical analysis of several economic indicators is used to investigate the different factors driving the NO2 concentration trends over Spain during the last two decades.

We also report the current state of UVAS instrument algorithms development for NO2, HCHO, SO2, BrO and IO species.