火山气溶胶对北京地区臭氧总量变化趋势的影响

Effects of Volcanic Aerosol on Ozone Change Trends over Beijing

分析了１９７９～１９９５年北京地区臭氧总量的变化趋势、１９８０～１９９４年整层气溶胶光学厚度和１９８１～１９８５、１９９０～１９９４年平流层气溶胶光学厚度。分析依据的数据资料来自Ｄｏｂｓｏｎ仪器所观测的臭氧总量资料和太阳辐射表提供的气溶胶光学厚度资料。结果表明，１９７９～１９９５年期间北京地区臭氧总量年变化率为－０２６９％，１９８２～１９８５、１９９１～１９９４年间臭氧总量年变化率分别高达－０９５４％和－１４３９％。这说明厄尔奇琼火山和皮纳图博火山爆发对臭氧总量减少可能起到重要作用。

Ozone change trends for the period 1979～1995, column aerosol optical depth for the period 1980～1994 and the stratospheric aerosol optical depth for the periods of 1981～1985 and 1990～1994 over Beijing are analyzed using ozone data measured with Dobson and aerosol optical depth data with photometer The results show that the ozone yearly change rate over Beijing is -2 69% from 1979～1995 and reachs up to -0 954% and -1 439% for the periods of 1982～1985 and 1991～1994 respectively, which means that the eruptions of El Chichon and Pinatubo volcanoes have important effects on decrease in total ozone amount