auroral electrojet index

例句：

1. 1. The auroral electrojet index is used tomeasure the strength of the geomagnetic field.
   极光电子流指数用于测量地磁场的强度。
2. 2. The auroral electrojet index has been increasing recently, indicatingan increase in solar activity.
   极光电子流指数最近一直在增加，表明太阳活动有所增加。
3. 3. Theauroral electrojetindex is closely related to thesun's magnetic field, whichcan affect weather patterns around the globe.
   极光电子流指数与太阳的磁场密切相关，这可以影响全球的天气模式。