Abstract—

Determining the vertical structure of CO₂ content is important for studying the exchange of greenhouse gases between the troposphere, where anthropogenic factors determine their growth and content, and the stratosphere. In this work, we analyze the potential information content and vertical resolution of ground-based IR spectroscopy in determining CO₂ profiles from solar radiation measurements with a Bruker 125 HR Fourier spectrometer at the St. Petersburg site. Based on methodological studies of different spectral windows and regions, we show the possibility of determining 3–4 independent parameters of the CO₂ vertical structure. Measurements in strong and moderate absorption lines provide maximum information on the CO₂ content in the lower and middle troposphere with a vertical resolution of 3–5 km. Weak absorption lines provide information on the CO₂ content in the stratosphere with a vertical resolution of 10–25 km.

中文翻译：

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用于确定CO 2垂直结构的地基红外光谱的信息含量和垂直分辨率分析

摘要—

确定CO ₂含量的垂直结构对于研究对流层和对流层之间的温室气体交换非常重要，对流层是由人为因素决定其生长和含量的对流层。在这项工作中，我们在圣彼得堡站点使用Bruker 125 HR傅立叶光谱仪通过太阳辐射测量确定CO ₂分布图时，分析了地面红外光谱的潜在信息内容和垂直分辨率。基于对不同光谱窗口和区域的方法学研究，我们显示出确定CO ₂垂直结构的3-4个独立参数的可能性。在强吸收线和中吸收线中进行的测量可提供有关CO _2的最大信息在对流层中低层的垂直分辨率为3-5 km。弱吸收线以10-25 km的垂直分辨率提供有关平流层中CO ₂含量的信息。