AMPERE GRD & IRD Data (2020-Oct)

2020-Oct 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10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。数据按2分钟分辨率被切分为10分钟时长的分块，以供拟合算法使用。在前期处理中被标记为‘无效’的观测数据，在录入IRD文件前已被移除。 AMPERE GRD 文件包含分辨率为2分钟的半球delta-B与伯克兰电流（Birkeland current）拟合结果。