CEDAR: Simultaneous Digital Ionosonde and Mapping Tilting Filter Photometer Studies of the Precipitation of Conjugate Photoelectrons into the Mid-latitude Winter Thermosphere

CEDAR：同步数字电离探空仪和映射倾斜滤光光度计研究共轭光电子进入中纬度冬季热层的沉淀

• 批准号: 9979268
• 负责人: John Meriwether
• 金额: $ 11.75万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9979268&HistoricalAwards=false
• 关键词: CEDAR; Simultaneous; Digital; Ionosonde; Mapping

Meriwether, John W.ATM9979268absThe investigators will combine measurements of atomic oxygen emissions during twilight with digital ionosonde measurements to study the response of precipitating conjugate photoelectrons to variations in solar and geomagnetic activity during the upcoming solar maximum period, and to compare the results with predictions from the Field-aligned Interhemispheric Plasma (FLIP) model. The observations consist of photometric measurements of the 630 and 844.6 nm atomic oxygen airglow emission rates over two winters at the Clemson Atmospheric Research Laboratory. The emission rate at 630 nm caused by conjugate photoelectron impact is determined by subtraction of the model estimate for the local emission from the photometer observations. These results and the observed 844.6 nm emissions would be compared with the FLIP predictions of nightglow enhancements generated by conjugate photoelectron fluxes. These results would provide insight as to possible plasmasphere variations of transparency with latitude or longitude or with changes in solar and geomagnetic activity.

约翰·梅里韦瑟 W.ATM9979268abs 研究人员将把暮光期间原子氧发射的测量与数字电离探空仪测量结合起来，研究沉淀共轭光电子对即将到来的太阳活动极大期期间太阳和地磁活动变化的响应，并将结果与​​场对准半球等离子体的预测进行比较 （翻转）模型。 这些观测包括克莱姆森大气研究实验室两个冬天 630 和 844.6 nm 原子氧气辉发射率的光度测量。 由共轭光电子撞击引起的 630 nm 处的发射率是通过从光度计观测中减去局部发射的模型估计来确定的。 这些结果和观察到的 844.6 nm 发射将与共轭光电子通量产生的夜光增强的 FLIP 预测进行比较。 这些结果将提供有关等离子层透明度随纬度或经度或太阳和地磁活动变化的可能变化的见解。