CEDAR: Mapping Conjugate and Non-Conjugate Convection Response Dating Equinox Intervals

PI建议使用电离层同化映射 电动力学（AMIE）程序推导电离层电导， 电场、电流和焦耳加热图 春分期：1990年3月20日至21日，1991年3月23日至28日和28日至29日 1992年3月 第一期是能量学与动力学耦合 大气区域（CEDAR）风暴研究间隔，我们 已开始初步数据收集。 第二个时期是 相当大的地球物理兴趣，因为它遵循一个 第22太阳活动周最大的耀斑事件 三防 气象卫星计划（DMSP）观测到的卫星 粒子和场的变化。 为此 PI还将获得选定的法布里-珀罗光学 数据和地球同步磁层等离子体分析仪数据， 我们打算与高纬度电动力学模式相关联。 1992年3月28日至29日期间也有相当多的数据 这是一项地球空间环境建模（GEM）观测 运动中 因为三月份有四个DMSP航天器在运行， 1992年，该区间有潜力生产最多的 为大规模研究而收集的综合数据集 从太阳风到磁层的电动联系， 电离层并最终到达中性大气层。 与以前的研究一样，数据将从DMSP获得 粒子和场测量，NOAA粒子测量， 非相干散射雷达、相干高频雷达和 两个半球的地面地磁观测站。 这些数据 会被同化产生电势场 水平和场向电流分布 以及焦耳加热和电导分布。 本研究的主要目的是：（1）提供 二分点大尺度共轭偏差的解释 对流模式的太阳风参数，（2） 记录高纬度地区的时空尺度 与国际货币基金组织的重大变化有关的变化， 将这些变化与 磁层;（3）支持新的和正在进行的协调风暴 研究（CEDAR和GEM），提供一种解释当地 在全球范围内观察。

The PIs propose to use the Assimilative Mapping of Ionospheric Electrodynamics (AMIE) procedure to derive ionospheric conductance, electric filed, current and Joule heating maps for three disturbed equinox periods: 20-21 March 1990, 23-28 March 1991 and 28-29 March 1992. The first period is a Coupling Energetics and Dynamics of Atmospheric Regions (CEDAR) storm study interval for which we have begun initial data collection. The second period is one of considerable geophysical interest because it follows one of the largest flare events of solar cycle 22. Three Defense Meteorological Satellite Program (DMSP) satellites observed particle and field variations during this interval. For this interval the PIs will also acquire selected Fabry-Perot optical data and geosynchronous magnetospheric plasma analyzer data which we intend to correlate with high latitude-electrodynamic patterns. Considerable data also exist for the 28-29 March 1992 interval which was a Geospace Environmental Modelling (GEM) observational campaign. Because four DMSP spacecraft were operating during March 1992, the interval has the potential of producing the most comprehensive data set ever assembled for the study of large scale electrodynamic linkages from the solar wind to the magnetosphere, the ionosphere and ultimately to the neutral atmosphere. As in previous studies data will be acquired from DMSP particle and field measurements, NOAA particle measurements, Incoherent Scatter Radars, Coherent High Frequency Radars, and ground magnetic observatories from both hemispheres. These data will be assimilated to produce electric potential field distributions, horizontal and field-aligned current distributions and Joule heating and conductance distributions. The primary objectives for this study are: (1) providing explanation of deviations from large scale conjugacy in equinoctial convection patterns in terms of solar wind parameters, (2) documenting the temporal and spatial scale of high-latitude variations associated with significant changes of the IMF and correlating these variations with observations in the magnetosphere; (3) supporting new and ongoing coordinated storm studies (CEDAR and GEM) by providing a means for interpreting local observations in a global context.