Gravity waves-induced airglow temperature variations, phase relationships, and Krassovsky ratio for OH(8,3) airglow, O2(0,1) atmospheric band, and O(1S) greenline in the MLT region
Gravity waves-induced airglow temperature variations, phase relationships, and Krassovsky ratio for OH(8,3) airglow, O2(0,1) atmospheric band, and O(1S) greenline in the MLT region
复制标题
MLT 区域中 OH(8,3) 气辉、O2(0,1) 大气带和 O(1S) 绿线的重力波引起的气辉温度变化、相位关系和克拉索夫斯基比
DOI：
10.1016/j.jastp.2015.05.002
复制
发表时间：
2015
影响因子：
1.9
通讯作者：
Tai
中科院分区：
文献类型：
--
作者：
Tai
模拟了重力波引起的MLT区OH（8，3）夜辉、O2（0，1）大气带和O（1 S）绿线的气辉强度加权温度的长期变化和起伏，研究了重力波对气辉温度的影响。研究了含时OH化学动力学（OHCD）模型和含小尺度线性重力波包的多重气辉化学动力学（MACD）模型。在O2（0，1）温度下，最大的波致气辉温度长期变化为~0.8%;在O（1 S）温度下，最大的波致气辉温度波动为~0.25%。我们还研究了气辉强度和温度之间的相位关系。我们的结果表明，气辉强度领先的气辉温度的大部分时间。此外，位于较高高度的气辉导致位于较低高度的气辉，指示向下的相位进展，这与我们使用的波包的相位一致。计算了这些气辉排放的Krassovsky比，发现随着高度的增加而减小。OH（8，3）气辉、O2（0，1）大气带和O（1 S）绿线的Krassovsky比振幅分别为~10、6和4。
The gravity wave-induced secular variations and fluctuations of airglow intensity-weighted temperatures for OH(8,3) nightglow, O2(0,1) atmospheric band, and O(1S) greenline in the MLT region were simulated to study the wave effects’ on airglow temperatures. They were investigated with a time-dependent OH Chemistry-Dynamics (OHCD) model and a Multiple Airglow Chemistry-Dynamics (MACD) model with a small-scale linear gravity wave packet. The largest wave-induced airglow temperature secular variations are found to be ~0.8% in the O2(0,1) temperature and the largest wave-induced airglow temperature fluctuations are found to be ~0.25% in the O(1S) temperature. We also investigated the phase relationships between the airglow intensities and temperatures. Our results show that the airglow intensities lead the airglow temperatures most of the time. Also, airglow located at a higher altitude leads the airglow located at a lower altitude, indicating a downward phase progression, which is consistent with the phase of the wave packet we used. The Krassovsky ratio for these airglow emissions were calculated and found to be decreasing with increasing altitude. The amplitude of the Krassovsky ratio for OH(8,3) airglow, O2(0,1) atmospheric band, and O(1S) greenline were ~10, 6, and 4, respectively.