Meteor‐Ablated Aluminum in the Mesosphere‐Lower Thermosphere
Meteor‐Ablated Aluminum in the Mesosphere‐Lower Thermosphere
复制标题
中间层-低层热层中被流星烧蚀的铝
DOI：
10.1029/2020ja028792
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
J. C. Gómez Martín
中科院分区：
文献类型：
--
作者：
J. Plane;Shane M. Daly;W. Feng;M. Gerding;J. C. Gómez Martín
第一个流星烧蚀铝的全球大气模型（WACCM-Al）由三个部分组成：全大气社区气候模型（WACCM 6）;通过将太阳系中尘埃源的天文模型与化学流星烧蚀模型耦合而得出的Al的流星输入函数;以及与高层大气中Al化学相关的一套全面的中性，离子-分子和光化学反应。控制Al+离子被中和速率的两个重要反应的反应动力学首先使用快流管和脉冲激光烧蚀Al靶进行研究，在294 K下得到k（AlO+ + CO）=（3.7 ± 1.1）× 10−10和k（AlO+ + O）=（1.7 ± 0.7）× 10−10 cm 3 molecule−1 s−1。利用激光雷达观测AlO的第一次尝试是在λair = 484.23 nm处探测B2 <$+（v ′ = 0）<$X2 <$+（v″ = 0）跃迁的带头。AlO的上限被确定为60 cm−3，这与根据火箭携带的手榴弹释放后AlO的衰变估计的夜间浓度为105 cm−3一致。WACCM-Al预测如下：AlO、AlOH和Al+是80公里以上的三种主要物质;中纬度地区的AlO层在89公里处达到峰值，半宽为1.55公里，峰值密度从夜间的最小值1.10 cm−3增加到白天的最大值1.60 cm−3;观察AlO的最佳机会是在高纬度地区的春分黄昏。
The first global atmospheric model (WACCM‐Al) of meteor‐ablated aluminum was constructed from three components: The Whole Atmospheric Community Climate Model (WACCM6); a meteoric input function for Al derived by coupling an astronomical model of dust sources in the solar system with a chemical meteoric ablation model; and a comprehensive set of neutral, ion‐molecule and photochemical reactions relevant to the chemistry of Al in the upper atmosphere. The reaction kinetics of two important reactions that control the rate at which Al+ ions are neutralized were first studied using a fast flow tube with pulsed laser ablation of an Al target, yielding k(AlO+ + CO) = (3.7 ± 1.1) × 10−10 and k(AlO+ + O) = (1.7 ± 0.7) × 10−10 cm3 molecule−1 s−1 at 294 K. The first attempt to observe AlO by lidar was made by probing the bandhead of the B2Σ+(v′ = 0) ← X2Σ+(v″ = 0) transition at λair = 484.23 nm. An upper limit for AlO of 60 cm−3 was determined, which is consistent with a night‐time concentration of ∼5 cm−3 estimated from the decay of AlO following rocket‐borne grenade releases. WACCM‐Al predicts the following: AlO, AlOH and Al+ are the three major species above 80 km; the AlO layer at mid‐latitudes peaks at 89 km with a half‐width of ∼5 km, and a peak density which increases from a night‐time minimum of ∼10 cm−3 to a daytime maximum of ∼60 cm−3; and that the best opportunity for observing AlO is at high latitudes during equinoctial twilight.
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DOI：
10.1029/2020ja028083
发表时间：
2020
期刊：
Space Physics
影响因子：
--
作者：
Daly S
通讯作者：
Daly S
DOI：
10.1002/jgrd.50708
发表时间：
2013-08
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
W. Feng;D. Marsh;M. Chipperfield;D. Janches;J. Höffner;F. Yi;J. Plane
通讯作者：
W. Feng;D. Marsh;M. Chipperfield;D. Janches;J. Höffner;F. Yi;J. Plane
DOI：
10.1039/c8cp07572g
发表时间：
2019-07
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Shane M. Daly;D. Bones;J. Plane
通讯作者：
Shane M. Daly;D. Bones;J. Plane
使用 70 至 150 公里高度之间的 SCIAMACHY/Envisat 观测和 WACCM-Mg 模型结果对 Mg 原子和离子层进行全球调查
影响因子：
6.3
作者：
Langowski M
通讯作者：
Langowski M