[PDF]    http://dx.doi.org/10.3952/lithjphys.48103

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 48, 99–106 (2008)


RELATIONSHIP OF TOTAL OZONE AMOUNT, UV RADIATION INTENSITY, AND THE GROUND-LEVEL OZONE CONCENTRATION AT RURAL LITHUANIAN SITES
R. Chadyšienėa, R. Girgždienėb, and A. Girgždysa
aVilnius Gediminas Technical University, Saulėtekio 11, LT-10223 Vilnius, Lithuania
E-mail: renata.chadysiene@fm.vtu.lt
bInstitute of Physics, Savanorių 231, LT-02300 Vilnius, Lithuania

Received 4 July 2007; revised 7 November 2007; accepted 22 February 2008

The ultraviolet radiation intensity, the total ozone amount, and the ground-level ozone concentration are the three essential factors having impact on the vegetation, materials, the human health, and the atmospheric chemistry. The analysis of the relationship among these parameters was made for the obtained data under Lithuanian rural conditions. UVB radiation intensity and ground-level ozone concentration were measured at the Rūgšteliškės monitoring station and total ozone data were obtained from the Kaunas meteorological station during 2002–2003. Cloudless or slightly cloudy days of the period were chosen for the analysis. The results showed a strong dependence (R = 0.73 for 2002 and R = 0.75 for 2003) between the UVB radiation intensity and the ground-level ozone concentration. The photochemical ozone generation at the Rūgšteliškės station, located in the unpolluted forest area, is related to the reaction between natural volatile organic compounds emitted from the vegetation at low nitrogen oxide level. A more pronounced relationship between the UVB radiation intensity and the ground-level ozone concentration was found in 2003 and it could be related to specific meteorological conditions of the summer of 2003. A negative correlation (R > –0.86) was determined during cloudless days between the UVB radiation and the total ozone.
Keywords: ground-level ozone concentration, monitoring data, total ozone, ultraviolet radiation
PACS: 92.70.Cp, 92.60.Vb


RYŠYS TARP BENDRO OZONO KIEKIO, ULTRAVIOLETINĖS SPINDULIUOTĖS INTENSYVUMO BEI PAŽEMIO OZONO KONCENTRACIJOS LIETUVOS KAIMO VIETOVĖSE
R. Chadyšienėa, R. Girgždienėb, A. Girgždysa
aVilniaus Gedimino technikos universitetas, Vilnius, Lietuva
bFizikos institutas, Vilnius, Lietuva

Analizuotas ultravioletinės spinduliuotės intensyvumo ir bendro ozono kiekio bei pažemio ozono koncentracijos ryšys. Priklausomybė tirta panaudojant ultravioletinės spinduliuotės intensyvumo ir pažemio ozono koncentracijų matavimų Aukštaitijos ekologinės stebėsenos stotyje Rūgšteliškėse duomenis ir bendro ozono kiekio matavimų (M-124 tipo ozonometru) Lietuvos hidrometeorologijos tarnybos Kauno meteorologinėje stotyje duomenis, gautus 2002–2003 metų nenutrūkstamų matavimų metu. Ryšio tarp pažemio ozono lygio ir UVB spinduliuotės intensyvumo bei bendro ozono kiekio paieškai pasirinkti balandžio–birželio mėnesiai, kadangi kaip tik tuo laikotarpiu registruojamos didelės šių parametrų vertės. Statistiškai nagrinėjant tarpusavio ryšį, tarp bendro ozono kiekio ir UVB spinduliuotės intensyvumo nustatytas antikoreliacinis ryšys, stebimas tik giedromis dienomis; koreliacijos koeficientai 2002 ir 2003 metais atitinkamai buvo –0,87 ir –0,86. Nagrinėjant ryšį tarp UVB spinduliuotės ir pažemio ozono koncentracijos, nustatyta, kad UVB spinduliuotės ir pažemio ozono tarpusavio ryšys tampresnis giedromis dienomis; koreliacijos koeficientai 2002 ir 2003 metais atitinkamai 0,72 ir 0,75.


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