Naslov
Frequency analysis of long term ozone data

Autori
Cvitaš, Tomislav ; Kezele, Nenad ; Klasinc, Leo ; Pompe, Matevž ; Šorgo, Glenda ; Veber, Marjan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the MATH/CHEM/COMP 2004 : The 19th Dubrovnik International Course & Conference on the Interfaces among Mathematics, Chemistry and Computer Sciences / Graovac, Ante ; Pokrić, Biserka ; Smrečki, Vilko - Zagreb : Institut Ruđer Bošković, 2004, 18-18

Skup
Dubrovnik International Course & Conference on the Interfaces among Mathematics, Chemistry and Computer Sciences (19 ; 2004)

Mjesto i datum
Dubrovnik, Hrvatska, 21.06.2004. - 26.06.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ozone monitoring

Sažetak
Data obtained during long-term continuous ozone monitoring at different European sites were analyzed by applying Fourier transformation (FT). As expected, strong frequency signals are found for the 1 year and 1 day periods. A collective FT spectrum for different sites was calculated. This comparison confirms the existence of a common variation in ozone volume fractions with quasi periods ranging between 7 and 44 days. These frequencies are most probably connected with quasi-cyclic synoptic scale meteorological influences. As expected, strong frequency signals are found for the 1 year and 1 day periods. the relative intensity of the 1 day peak can becorrelated with the intensity of local photochemical pollution as represented by a photochemical pollution index. The relative importance of the remaining peaks are calculated for each FT spectrum and are found to describe approximately 40-44 day, 13-15 day, 8-11 day and 7 day quasi-cyclic behavior. Meteorological parameters such as temperature, pressure and relative humidity show some, but not perfect agreement with ozone concentration behavior.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA