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

该奖项是为研究零星微流星流入上层大气的博士后颁发的。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（EISCAT）雷达的数据。微流星的速度将由雷达的多普勒测量结果推断出来。阿雷西博和EISCAT结果的比较将揭示两个地点夏季和冬季的差异。通量的差异可能在夜光云的形成和相关的夏季高层大气现象中起主要作用，这些现象可能是全球变化的先兆。流星体的破坏机制和陨星物质的沉积也将被研究。这对于阐明流星带上方金属层的起源以及观测到的相对于陨石成分的低大气钙丰度是至关重要的。

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.