The effect of temperature on thermospheric molecular oxygen absorption in the Schumann‐Runge Continuum
The effect of temperature on thermospheric molecular oxygen absorption in the Schumann‐Runge Continuum
复制标题
温度对舒曼-龙格连续体中热层分子氧吸收的影响
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
A. J. Blake
中科院分区：
文献类型：
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作者：
J. Lean;A. J. Blake
先前通过舒曼-龙格连续谱中的紫外线消光来确定低层热层中的分子氧数密度是使用在室温下测量的吸收截面。最近对该波长区域内分子氧吸收截面的温度依赖性的实验室测量允许重新评估先前的大气数据。新的横截面已用于重新分析来自澳大利亚伍默拉 Aerobee 火箭飞行的光谱仪的数据。获得的密度比之前分析获得的密度小20%，与同时飞行的对温度相对不敏感的宽带离子室的结果更加一致。
Previous determinations of molecular oxygen number densities in the lower thermosphere by ultraviolet extinction in the Schumann-Runge continuum have used absorption cross sections measured at room temperature. Recent laboratory measurements of the temperature dependence of the molecular oxygen absorption cross section in this wavelength region allow a reassessment of the previous atmospheric data. The new cross sections have been used to reanalyze data from a spectrometer flown on an Aerobee rocket from Woomera, Australia. The densities obtained are smaller by as much as 20% than those obtained from the previous analysis, in better agreement with the results of broad band ion chambers flown at the same time that were relatively insensitive to temperature.