CEDAR Postdoctoral Proposals: An Arecibo/EISCAT Observational Investigation of the Effects of the Meteor Mass Flux on the 80-120 km Atmosphere/Ionosphere

该奖项是对零星微流星质量流入高层大气的博士后研究。 这项研究利用了波多黎各的阿雷西博雷达和挪威的欧洲非相干散射雷达的数据。 微流星的速度将从雷达的多普勒测量中推导出来。 Arecibo和EISCAT结果之间的比较将揭示两个地点夏季和冬季的差异。 通量的差异可能在可能是全球变化预兆的平流层云和相关夏季高层大气现象的形成中发挥重要作用。 还将研究流星体的破坏机制和流星体的沉积。 这对于阐明陨石区上方金属层的起源以及观察到的大气中钙的丰度相对于陨石成分的预期丰度较低至关重要。

This award is for post-doctoral research on sporadic micrometeor mass influx into the upper atmosphere. The study makes use of data from the Arecibo Radar in Puerto Rico and the European Incoherent Scatter (EISCAT) radar in Norway. The micrometeor velocities will be deduced from Doppler measurements made by the radars. The comparison between the Arecibo and EISCAT results will reveal summer and winter differences at the two locations. The differential in flux may play a major role in the formation of noctilucent clouds and related summer upper atmosphere phenomena that may be harbingers of global change. Meteoroid destruction mechanisms and deposition of meteoric mass will also be investigated. This is critical to elucidating the origins of metal layers above the meteor zone and the observed low atmospheric abundance of calcium relative to that expected from meteorite composition.