Abstract

Ozone anomalies that occur in the winter–spring period in the Northern Hemisphere have been increasingly observed in recent decades not only in the polar, but also in midlatitudes, including those near populous cities. A decrease in the stratospheric ozone content can lead to dangerous for humans levels of UV radiation; therefore, the study of processes associated with the variability of the content of stratospheric ozone is an urgent task for developing methods to predict the appearance of ozone miniholes and the growth of UV surface illumination. Using the example of measurements of solar IR radiation with a Bruker 125HR Fourier spectrometer in the vicinity of St. Petersburg, we demonstrate the capabilities of the ground-based spectroscopic method for studying and explaining the temporal variability of stratospheric trace gases involved in the cycles of the destruction and formation of the ozone layer. We have shown the importance of the temperature and dynamic state of the stratosphere for the formation of conditions for the chemical destruction of ozone, as well as the efficiency of using measurements of the total HF content as a dynamic tracer that makes it possible to identify periods of potential activation of the chemical mechanism of ozone loss.

中文翻译：

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地基光谱测量法分析圣彼得堡附近平流层气体的变异性

摘要

近几十年来，北半球冬春季节出现的臭氧异常现象不仅在极地而且在中纬度地区，包括人口稠密城市附近的纬度地区，都得到了越来越多的观察。平流层臭氧含量的降低会导致对人类紫外线辐射的危害；因此，与平流层臭氧含量变化有关的过程的研究是开发预测臭氧微孔外观和紫外线表面照射增长的方法的紧迫任务。以在圣彼得堡附近使用Bruker 125HR傅里叶光谱仪测量太阳IR辐射为例，我们证明了基于地面的光谱方法研究和解释涉及破坏和形成臭氧层的循环中的平流层痕量气体随时间变化的能力。我们已经证明了平流层温度和动态状态对于形成臭氧化学破坏条件的重要性，以及将总HF含量的测量值用作动态示踪剂的效率，这使得可以确定周期可能激活臭氧损失的化学机制。