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Study of aerosol vertical distribution during meteor showers of January 2009
Journal of Atmospheric and Solar-Terrestrial Physics ( IF 1.8 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.jastp.2020.105511
Pratibha B. Mane , Dhairyasheel B. Mane

Abstract Atmospheric aerosols are minute particles (1 nm–100 μm) suspended in various layers of the Earth's atmosphere. During meteor showers, huge amount of cosmic debris called meteoroids enters into the Earth's atmosphere. These particles contribute to aerosols in the mesosphere and lower thermosphere. The aerosols emerged from meteor dust particles are having different size. The displacement of the particles through the atmosphere is directly proportional to their size. Therefore, we observed several maxima on the post-shower aerosol vertical profiles. One attempt is made to study correlation between the mesospheric and lower thermospheric Aerosol Number Density per cm3 (AND) and different types of Meteor Showers i.e. strong, medium-level and weak. Another attempt is made to trace the journey of meteor matter through lower atmospheric layers. The changes in AND are studied under this topic by using the data collected during January 2009 at Kolhapur (16°39′42.2″N, 74°14′20.8″E) by using Semiautomatic Twilight Photometer. This instrument provides the qualitative picture of vertical distribution of atmospheric aerosols from about 6 km to 360 km with the height resolution of 30 m at tropospheric levels.

中文翻译:

2009年1月流星雨气溶胶垂直分布研究

摘要 大气气溶胶是悬浮在地球大气各层中的微小颗粒(1 nm–100 μm)。在流星雨期间,大量称为流星体的宇宙碎片进入地球大气层。这些颗粒有助于形成中间层和低热层中的气溶胶。流星尘埃粒子产生的气溶胶大小不一。粒子在大气中的位移与其大小成正比。因此,我们在淋浴后气溶胶垂直剖面上观察到了几个最大值。尝试研究中间层和较低热层气溶胶数密度/cm3 (AND) 与不同类型的流星雨(即强、中级和弱流星雨)之间的相关性。另一项尝试是追踪流星物质穿过较低大气层的旅程。使用 2009 年 1 月在 Kolhapur (16°39′42.2″N, 74°14′20.8″E) 使用半自动暮光光度计收集的数据,在本主题下研究了 AND 的变化。该仪器提供了大气气溶胶垂直分布的定性图像,从大约 6 公里到 360 公里,高度分辨率为 30 米,在对流层水平。
更新日期:2021-02-01
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