Study on transportation processes of polar ozone

对影响极地臭氧变化的输送过程进行了研究。(1)通过对南极昭和站臭氧总量和垂直廓线的长期观测，分析了臭氧的变化。20世纪80年代开始引起人们注意的春季臭氧消耗，在90年代有所发展，并持续稳定。在强臭氧洞条件下，14 - 19 km范围内的臭氧层被完全破坏。20世纪90年代，平流层低层臭氧浓度即使在臭氧洞发生后也一直保持较低水平。由于平流层低层臭氧主要受动力学控制，因此认为极涡、大气环流形势和输送过程都发生了变化。(2)为了区分对臭氧的化学和动力学影响，在1993年9月初的10天内，在三个南极站Syowa、Neumayr和Mitri进行了臭氧探测仪的共置飞行。结合客观分析得到的后向轨迹对这些结果进行了分析 ...更多信息 SIS，臭氧变化已被表征。(3)分析了极地巡逻气球（PPB）对大气成分进行拉格朗日观测的实验结果。试验于1991年9月在上海冬季进行。在极涡内飞行过程中发现臭氧浓度与气溶胶浓度呈负相关，在气球下降过程中观测到极区平流层云（PSC）的高浓度层。(4)在昭和站连续测量地面臭氧浓度。阐明了平流层大气中大气污染物浓度冬季高、夏季低的典型季节变化特征，并将其归因于平流层与对流层大气交换和对流层上层大气输送过程的差异。春季表层臭氧有一个持续数天的突然耗竭现象，这与低层大气经过海面时的变化有关。少

Transportation process which affect the variation of polar ozone, has been examined.(1) From the long range observation of total and vertical profile of ozone at Syowa Station, Antarctica, variation of ozone has been analyzed. Spring ozone depletion, which became noticeable in 1980s, has developed in 1990s, and stably continued. In term of strong ozone hole, ozone layr in 14 - 19 km is absolutely destroyed. In 1990s, ozone concentration in lower stratosphere has stayd low even after the ozone hole. Since the ozone in lower stratosphere is mainly controlled by dynamics, some changes in polar vortex, atmospheric circulation pattern and transportation process are assumed to be occurred.(2) In order to distinguish chemical and dynamical effect on ozone, collocated ozone sonde flights were performed at three Antarctic stations Syowa, Neumayr and Mitri during 10 days at the beginning of September in 1993. Analyzing these results together with backward trajectory obtained from objective analy … More sis, ozone variation has been characterized.(3) Results of Polar Patrol Balloon (PPB) experiment, which can make an Lagrangian observation of atmospheric composition, has been analyzed. The experiment was conducted in SH winter in September 1991. Negative correlation between concentrations of ozone and aerosol has been found during the flight inside the polar vortex and high concentration layr of Polar Stratospheric Clouds (PSCs) was measured during the balloon descent.(4) Concentration of surface ozone are continuously measured at Syowa Station. The typical seasonal variation, high concentration in winter and low concentration in summer different from that at the stratosphere, was clarified, and attributed to the difference in exchange of air between stratosphere and troposphere, and transportation process in the upper troposphere. Also, a sudden depletion of spring ozone at the surface for few days duration was found, and related to the transformation of lower atmosphere traveled over sea surface. Less