CEDAR: Low-Latitude Electrodynamics

七个便携式磁力计，用于低纬度电离层电动力学的雪松研究，正在用链式或集群传感器进行实验。研究人员希望获得赤道电喷流、Sq电流系统、阿普尔顿电离异常和赤道扩散f等大的日常变化的知识。以前在低纬度电动力学研究中受到阻碍，研究人员正在通过结合地面传感器（包括电离层探空仪、后向散射雷达和磁强计链）来填补低纬度数据的空白。磁力计估计架空电流作为磁倾角纬度的函数。然后，将这些估计值转换为漂移速度的估计值，将漂移速度的纬度变化转换为倾角赤道上空电场随高度的变化，磁力计测量提供沿磁子午线的时间连续数据，并在两个半球进行空间覆盖。除了这些研究之外，磁力计还将在其他雪松和空间天气项目下部署。

Seven portable magnetometers, used for CEDAR investigations of electrodynamics in the low-latitude ionosphere, are performing experiments with chained or clustered sensors. Investigators hope to gain knowledge of large day-to-day variability found in equatorial electrojet, Sq current system, Appleton ionization anomaly, and equatorial spread F. Previously hampered in investigations of low-latitude electrodynamics, researchers are filling the lower-altitude data gap by combining ground-based sensors, including an ionosonde, a backscatter radar, and a chain of magnetometers. The magnetometers estimate the overhead current as a function of magnetic dip latitude. Then, these estimates convert to those of drift velocity, latitudinal variation in drift velocity converts into electric-field variation with altitude over the dip equator, and the magnetometer measurements provide time-continuous data along a magnetic meridian with spatial coverage in both hemispheres. Beyond these studies, the magnetometers will also be deployed under other CEDAR and Space Weather projects.