Measurements of surface ozone at Belsk Poland

摘要

Continuous measurements of surface ozone have been taken since August 1991 at Belsk, Poland. Distinct temporal variability of ozone concentration is observed: seasonal variation with maximum in summer months and minimum in autumn months and diurnal variation especially pronounced from March to October. Daily maximum occurs in the afternoon, while daily minimum occurs before sunrise. A certain number of nocturnal maximums occur especially in autumn and winter. Extremely high values (up to 96 ppb), probably caused by intense local photochemical production of ozone, was observed in August 1992 simultaneously with extremely high values of temperature. The results of UVB, temperature, and ozone measurements are positively correlated in the summer months. Correlation coefficient between ozone and temperature reached .86, between ozone and UVB radiation reached .74 in June 1992. For a relatively warm and sunny period in November 1991 correlation coefficient between ozone concentration and UVB radiation reached .93.