Radar Studies of the Low- and Mid-Latitude Thermosphere

低纬度和中纬度热层的雷达研究

• 批准号: 0004380
• 负责人: Bela Fejer
• 金额: $ 45.1万
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0004380&HistoricalAwards=false
• 关键词: Radar; Studies; Low; Mid; Latitude

This research is to study and model the variability of F region plasma and neutral atmospheric transport processes from equatorial to upper mid-latitudes using incoherent scatter radar and nighttime Fabry-Perot interferometer measurements from Peru, Arecibo and Millstone Hill. The PI's earlier experimental ionospheric disturbance electric field studies will be complemented by numerical simulations using the recently upgraded Rice Convection Model. The basic objective is the understanding and self-consistent empirical modeling of the short-term and spatial variability and effects of ionospheric electric fields and neutral winds, as well as the testing of global convection and circulation models.Large new databases of incoherent scatter radar drift measurements will be used to model the variability of mid- and low-latitude ionospheric disturbance plasma drifts, and their time constants, as a function of magnetospheric and high latitude ionospheric parameters. A storm-time dependent model of the nighttime thermospheric neutral winds to high latitude forcing using very extensive Fabry-Perot data from Arequipa, Arecibo, and Millstone Hill will be developed. These global plasma drift and neutral wind studies will also examine the effects of long and short duration high latitude forcing, UT and very large storm effects, and also storm time dependent coupling of disturbance winds and plasma drifts. The equatorial studies will include the variability of the quiet time daytime plasma drifts using JULIA data, and the study and empirical modeling of nighttime F-region neutral temperatures.

本研究利用秘鲁、阿雷西博和米尔斯顿山的非相干散射雷达和夜间法布里-珀罗干涉仪测量数据，研究和模拟从赤道到中高纬度的F区等离子体和中性大气传输过程的变化。 PI早期的电离层扰动电场实验研究将通过使用最近升级的赖斯对流模型进行数值模拟来补充。 基本目标是了解电离层电场和中性风的短期和空间变异性和影响并进行自洽经验建模，以及测试全球对流和环流模型。非相干散射雷达漂移测量的大型新数据库将用于模拟中纬度和低纬度电离层扰动等离子体漂移及其时间常数的变异性，作为磁层和高纬度电离层参数的函数。 将利用从阿雷基帕、阿雷西博和米尔斯顿山获得的大量法布里-珀罗数据，建立夜间热层中性风对高纬度强迫的风暴时间依赖模型。 这些全球等离子体漂移和中性风研究还将研究长、短持续时间高纬度强迫、UT和超大风暴效应的影响，以及扰动风和等离子体漂移与风暴时间相关的耦合。 赤道研究将包括使用JULIA数据的安静时间白天等离子体漂移的变化，以及夜间F区中性温度的研究和经验建模。