Tropospheric and stratospheric NO2 amount deduced by slant column measurements at Mt. Cimone station

An UV\Vis spectrometer was installed at Mt. Cimone Station in 1993. Since then it carried out zenith scattered solar radiation measurements at sunrise and sunset in the 407-464 nm spectral region. Data has been processed through DOAS methodology in order to obtain NO2 slant column. An inversion algorithm is used to calculate the gas vertical distribution from ground based column amount measurements so that the gas content in stratosphere and troposphere is evidenced. Two years data (1995-1996) are shown and discussed.