Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-organized criticality of air pollution
AbstractIn this work, we investigate the frequency-size distribution of three pollution indexes (PM10, NO2 and SO2) in Shanghai. They are well approximated by power-law distributions, which suggest that air pollution might be a manifestation of self-organized criticality. We introduce a new numerical sandpile model with decay coefficient to reveal inherent dynamic mechanism of air pollution. Only changing the number value of decay coefficient of pollutants, this model gives a good simulation of three pollutants' statistical characteristic. This work shows that it is the self-organized criticality of the air pollutants that results in the temporal variation of air pollutant indexes and the minor air pollution sources can trigger the occurrence of large pollutant events by SOC behavior.
Self-organized criticality of air pollution
AbstractIn this work, we investigate the frequency-size distribution of three pollution indexes (PM10, NO2 and SO2) in Shanghai. They are well approximated by power-law distributions, which suggest that air pollution might be a manifestation of self-organized criticality. We introduce a new numerical sandpile model with decay coefficient to reveal inherent dynamic mechanism of air pollution. Only changing the number value of decay coefficient of pollutants, this model gives a good simulation of three pollutants' statistical characteristic. This work shows that it is the self-organized criticality of the air pollutants that results in the temporal variation of air pollutant indexes and the minor air pollution sources can trigger the occurrence of large pollutant events by SOC behavior.
Self-organized criticality of air pollution
Shi, Kai (Autor:in) / Liu, Chun-Qiong (Autor:in)
Atmospheric Environment ; 43 ; 3301-3304
06.04.2009
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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