AMPERE GRD & IRD Data (2019-Jul)

2019-Jul 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.2019年7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ΔB观测数据。为适配拟合算法的使用需求，数据被按2分钟时间分辨率分割为10分钟时长的数据块；前期处理中被标记为"无效"的观测数据，在存入IRD文件前已被剔除。AMPERE GRD文件包含2分钟时间分辨率下的半球ΔB与毕尔克兰德电流（Birkeland current）拟合结果。