Studies of the Dynamics of the Equatorial Ionosphere Using a Latitudinal Network of Global Positioning System (GPS) Receivers

获奖者将继续在南美洲西海岸附近运营一个由五个全球定位系统(GPS)接收器组成的网络。这些数据被用来研究赤道电离层的动力学，并开发预测电离层闪烁开始的技术。赤道电离层是地球上闪烁最多的地方。闪烁的发生主要与电离层F区低密度等离子体气泡的上升有关。这种现象被称为赤道扩展F，到目前为止，还不可能预测赤道扩展F的逐日变化。这个项目包括对电离层中总电子含量的常规观测，研究中性风对不规则形成的影响，设计预测扩展F的方法，以及将总电子含量测量结果反演到电离剖面。这些数据将通过万维网传播给其他科学家，用于正在进行的研究工作。将升级GPS接收器并安装软件，以提供近乎实时的总电子含量和闪烁地图。第六个接收器将部署在哥伦比亚北部边界附近。这项研究将提高预报能力，帮助保护导航和通信系统免受闪烁的不利影响。

The awardee will continue operating a network of five Global Positioning System (GPS) receivers near the west coast of South America. The data are used to study the dynamics of the equatorial ionosphere, and to develop techniques to forecast the onset of ionospheric scintillations. The equatorial ionosphere is the location on Earth where the most scintillations occur. The occurrence of scintillations is mainly associated with the uprising of low-density plasma bubbles in the F region of the ionosphere. This phenomenon is called equatorial spread F. Thus far, it has not been possible to forecast the day-to-day variability of equatorial spread F. This project includes the routine observation of total electron content in the ionosphere, the study of the influence of neutral winds on irregularity formation, the design of a methodology for forecasting spread F, and in inversion of total electron content measurements to ionization profiles. The data will be disseminated via the World Wide Web to other scientists for use in ongoing research efforts. The GPS receivers will be upgraded and software implemented to provide near real-time maps of total electron content and scintillations. A sixth receiver will be deployed near the northern boundary of Columbia. This study will lead to improved forecasting capabilities that will help protect navigation and communication systems from the adverse effects of scintillation.