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    Se reduce la contaminación del aire

    Los niveles de concentración de dióxido de nitrógeno, uno de los principales responsables de la contaminación del aire, han disminuido una media del 64% en las principales ciudades españolas tras las medidas decretadas para la lucha contra el coronavirus. Donde más han bajado ha sido en Barcelona, con un 83%. En Madrid, la reducción ha sido de un 73% y en Valencia, de un 64%.
    Mapas dióxido de nitrógeno
    Estos son algunos de los resultados de un estudio desarrollado por investigadores de la Universitat Politècnica de Valencia (UPV), pertenecientes al Centro de Tecnologías Físicas. Para ello, el equipo de la UPV ha analizado imágenes satelitales de la misión Sentinel-5P del programa Copernicus de la Agencia Espacial Europea (ESA), comparando datos de dos periodos: del 10 al 14 de marzo, por un lado, y del 15 al 20, por otro. A partir de estos datos, han generado una serie de mapas que muestran las concentraciones de dióxido de nitrógeno en algunas de las principales ciudades españolas.
    Según destaca Elena Sánchez-García, investigadora del grupo Land and Atmosphere Remote Sensing (LARS-UPV) del Centro de Tecnologías Físicas de la UPV, el dióxido de nitrógeno es un importante indicador de la calidad del aire. «Altas concentraciones de este gas pueden afectar al sistema respiratorio y agravar ciertas patologías. Además, este gas está relacionado con la formación de lluvia ácida«, apunta.

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