AMPERE GRD & IRD Data (2020-Mar)

2020-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.2020年3月AMPERE GRD与IRD数据集。AMPERE IRD文件包含全球坐标系下的半球delta-B观测数据，此类全球坐标系涵盖地理坐标系与高度修正地磁坐标系（AACGM）。数据以2分钟采样分辨率被划分为10分钟时长的“数据块”，以供拟合算法使用。在前期处理流程中被标记为“无效”的观测数据，在存入IRD数据集前已被剔除。AMPERE GRD文件包含2分钟采样分辨率下的半球delta-B数据与毕尔克兰德电流（Birkeland current）拟合结果。