Radar Studies of Short-Term Variability in the Electrodynamics of the Low Latitude Ionosphere

低纬度电离层电动力学短期变化的雷达研究

• 批准号: 1068104
• 负责人: Bela Fejer
• 金额: $ 55.2万
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1068104&HistoricalAwards=false
• 关键词: Radar; Studies; Short; Term; Variability

This project will address the nature of short-term (1 month) variability of electrodynamic processes in the low-latitude ionosphere under both quiet and active geomagnetic conditions using statistical analysis of existing data from multiple sources. Specifically, the observations include incoherent scatter radar data from Jicamarca Radio Observatory in Peru, coherent scatter data from the JULIA radar system in Peru, and magnetic field data from the CHAMP satellite and ground-based magnetometers. The aim of the analysis is to quantify the effects on ionospheric variability from drivers in the lower atmosphere, such as planetary and tidal waves and sudden stratospheric warming events, as well as those associated with solar wind variability, which are communicated through the magnetosphere and high latitude ionosphere. The resulting quantifications will be used to develop empirical, altitude-dependent models of vertical and zonal winds and their response to climatological/weather variations.

该项目将利用对来自多种来源的现有数据的统计分析，探讨在平静和活跃地磁条件下低纬度电离层电动过程的短期（1个月）可变性的性质。 具体而言，观测数据包括来自秘鲁Jicamarca无线电观测台的非相干散射雷达数据、来自秘鲁JULIA雷达系统的相干散射数据以及来自CHAMP卫星和地面磁力计的磁场数据。 分析的目的是量化低层大气中的驱动因素对电离层可变性的影响，这些驱动因素包括行星波和潮汐波、平流层突然变暖事件以及与太阳风可变性有关的驱动因素，这些驱动因素通过磁层和高纬度电离层传播。由此产生的量化结果将用于建立垂直和纬向风及其对气候/天气变化的反应的经验性高度依赖模型。