地磁Ap指数数据(1932~2016)

本数据是美国地球物理数据中心（NGDC）提供的地磁三小时Ap指数数据，Ap指数与Kp类似，且它们存在对应转化关系，但它改变了Kp指数与磁扰幅度非线性的关系的。地磁ak指数，也叫“等效的三小时幅度”，是单台站磁场扰动减去太阳日变化Sq和太阴日变化L后的纯磁扰曲线最高值和最低值来确定的磁扰幅度，单位nT。

This dataset contains 3-hourly geomagnetic Ap index data provided by the National Geophysical Data Center (NGDC). The Ap index is similar to the Kp index, and a corresponding conversion relationship exists between them; however, it modifies the nonlinear relationship between the Kp index and geomagnetic disturbance amplitude. The geomagnetic ak index, also known as the "equivalent 3-hour amplitude", is the geomagnetic disturbance amplitude determined by taking the maximum and minimum values of the pure magnetic disturbance curve, which is obtained by subtracting the solar daily variation Sq and lunar daily variation L from the magnetic field disturbances at a single station, with the unit of nanotesla (nT).

搜集汇总

背景与挑战

背景概述

该数据集包含1932年至2016年的全球地磁Ap指数数据，Ap指数是衡量地磁活动的重要指标，常用于太阳爆发活动对地球磁场扰动的分析研究。数据来源于美国地球物理数据中心（NGDC），由邹自明贡献，数据质量可靠。