AMPERE GRD & IRD Data (2024-Mar)

2024-Mar AMPERE GRD and IRD data. AMPERE IRD files contain hemispheric delta-B observations in global coordinates (geographic and AACGM). Data are blocked into 10-minute 'chunks' at 2-minute resolution for use in the fitting algorithm. Measurements flagged 'bad' in the earlier processing are removed prior to entry in IRD. AMPERE GRD files contain hemispheric delta-B and Birkeland current fits at 2-minute resolution.2024年3月的AMPERE GRD与IRD数据集。 AMPERE IRD文件包含全球坐标系（地理坐标系与AACGM坐标系）下的半球delta-B观测数据。数据以2分钟的时间分辨率被分割为10分钟时长的数据块，以供拟合算法使用。早期处理阶段被标记为‘无效’的观测数据，在录入IRD数据集前已被剔除。 AMPERE GRD文件包含2分钟时间分辨率下的半球delta-B与伯克兰电流（Birkeland current）拟合结果。