DASI Track 2: Low-latitude Ionospheric Sensor Network (LISN) Investigations of Traveling Ionospheric Disturbances and Plasma Irregularities

该项目得到地球空间设施小型仪器分布式阵列的支助，目的是提供低纬度电离层传感器网络的运行和维护。这个分布式阵列分布在南美洲，测量电离层的动态。这与地球空间设施在南美洲的其他投资，如希卡马卡射电天文台，具有协同作用。它提供了重要的地理覆盖范围。2015年《国家空间气象行动计划》中的若干基准建议要求对电离层进行检查。在监测地球表面的日常天气时，监测电离层是很重要的，因为无线电通信可能受到电离层活动的严重影响。该项目将在三年内运行LISN分布式观测站，以及将要进行的电离层移动扰动和低纬和中纬电离层等离子体不规则性的形成和演变的测绘。LISN包含用于确定总电子含量的全球定位系统和全球导航卫星系统接收器以及用于测量TID的电离层探测仪。这些同时进行的测量可以提供洞察如何在低纬度种子等离子体现象，如赤道等离子体气泡，在中纬度的多尺度TID。等离子体动力学的复杂性需要对自然系统的多个视角。该奖项还支持服务器和数据产品的升级，以供公众传播。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This project supported by the Geospace Facility's Distributed Arrays of Small Instruments (DASI) is to provide the operations and maintenance of the Low-Latitude Ionospheric Sensor Network (LISN). This distributed array is spread across South American and measures dynamics of the ionosphere. This is synergistic with other Geospace Facility's investments in South America such as Jicamarca Radio Observatory. It provides important geographic coverage. Examination of the ionosphere is called out in several of the benchmark recommendations in the 2015 National Space Weather Action Plan. Monitoring of the ionosphere as daily weather is monitored on the surface of Earth is important because radio communications can be significantly impacted by ionospheric activity.This project to operate LISN distributed observatory for the three years will allow detailed observations and investigations of the origin, dynamics, coupling, and mapping of traveling ionospheric disturbances (TIDs) and the formation and evolution of plasma irregularities in the low- and mid-latitude ionospheres to be carried out. LISN contains Global Positioning System and Global Navigation Satellite System receivers for determining total electron content and ionosondes for measuring TIDs. These simultaneous measurements may provide insight into how multi-scale TIDs at low latitudes seed plasma phenomena, such as equatorial plasma bubbles, at mid latitudes. The complexity of the plasma dynamics requires multiple perspectives on the natural system. This award also supports an upgrade to the servers and data products for public dissemination.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.