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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >A seasonal study of mesospheric temperatures and emission intensities at Adelaide and Alice Springs
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A seasonal study of mesospheric temperatures and emission intensities at Adelaide and Alice Springs

机译：季节性中间层温度和研究排放强度在阿德莱德和爱丽丝弹簧

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摘要

Aerospace imagers operating at Alice Springs (23°42′S, 133°53′E) and Adelaide (34°55′S, 138°36′E) have collected more than 4-year of OH and O2 atmospheric emission data. Images taken over the course of each moonless night at 5-min intervals were used to determine OH Meinel (6, 2) and O2 Atmospheric (0, 1) band emission intensities and temperatures, as well as atmospheric gravity wave parameters. The NCAR general circulation model TIME-GCM was run for years 2002–2005 for comparison with these data. The data presented here show the interannual variability of OH and O2A emissions at two sites, Alice Springs and Adelaide, over a 4-a period. It was found that the TIME-GCM successfully reproduces many observed features of the data, including equinoctial maxima associated with the diurnal tide, a 6-h phase shift between OH temperature and intensity maxima, and springtime OH intensity enhancements at Alice Springs. However, the model tends to underestimate the depth of the summertime temperature minimum at both sites, possibly due to inadequate specification of the seasonal variation of gravity waves in the model. The model does, however, successfully describe many of the mesospheric changes observed during the 2002 stratospheric warming event.
机译：航空成像系统操作在艾丽斯斯普林斯(23°42′S, 133°53′E) and (Adelaide 34°55′S,138°36本部)收集了超过四年的哦和O2大气排放数据。在每一个没有月亮的晚上5分钟间隔被用来确定哦Meinel (2)和O2大气(0,1)乐队发射强度和温度,以及大气重力波参数。环流模型TIME-GCM竞选2002 - 2005年与这些数据比较。这里给出的数据显示年际变化的哦,O2A排放在两个网站,艾丽斯斯普林斯和阿德莱德,超过4期。发现TIME-GCM成功吗繁殖许多观察到的特征数据,包括二分maxima相关全日潮,6小时之间的相移哦温度和强度最大值和春天哦在Alice Springs强度增强。然而,模型往往低估了夏季温度最低的深度这两个网站,可能是因为不够规范的季节性变化在模型中重力波。然而,成功地描述的许多中间层的变化观察到在2002年平流层变暖事件。

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