Experimental evidence for photochemical control of the atmospheric sodium layer
Experimental evidence for photochemical control of the atmospheric sodium layer
复制标题
大气钠层光化学控制的实验证据
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
J. Plane
中科院分区：
文献类型：
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作者：
B. Clemesha;D. Simonich;H. Takahashi;S. Melo;J. Plane
1992年5月31日，一枚装有10个气辉光度计的火箭从巴西北方的阿尔坎塔拉发射中心发射。有效载荷测量了钠、羟基、原子和分子氧气辉发射，在发射场运行的钠激光雷达提供了大气钠密度的同步垂直剖面。气辉分布图与钠密度分布图一起，用于推导80至100公里区域内原子氧、臭氧和氢的垂直分布图。这些配置文件，然后用作输入的钠层的光化学模型。计算结果表明，Na和Na D线气辉的模型曲线与实验曲线吻合较好，表明Na O + O → Na（2 P，2S）+ O2反应生成Na（2 P）的分支比必须在0.05 ~ 0.20之间。
On May 31, 1992, a rocket payload equipped with 10 airglow photometers was launched from the Alcântara Launch Center in northern Brazil. The payload measured sodium, hydroxyl, atomic, and molecular oxygen airglow emissions, and a sodium lidar, operating at the launch site, provided simultaneous vertical profiles of atmospheric sodium density. The airglow profiles, in conjunction with the sodium density distribution, are used to derive vertical profiles for atomic oxygen, ozone and hydrogen in the 80 to 100 km region. These profiles are then used as inputs to a photochemical model for the sodium layer. Good agreement is achieved between the modeled and experimental profiles of sodium and Na D line airglow, and the results indicate that the branching ratio for the production of Na(2P) in the reaction NaO + O → Na(2P, 2S) + O2 must be between 0.05 and 0.20.