Searching for low dimensionality in air pollution time series
Maria Lanfredi, Maria F. Macchiato · Europhysics Letters (EPL) · 1997
Time series of atmospheric pollutants (NO x , CO and O 3 ) have been analyzed and the possible presence of low-dimensional chaos has been checked. The analysis has been performed by exploiting the concept of short-term predictability of chaotic systems. Although the time series exhibit statistical characteristics which mimic those typically explained by complex systems, no sign of chaos has been evidenced.