SHARP Near-Real-Time Data

SHARP Near Real Time data in CCD coordinates.

SHARP stands for Space-weather HMI Active Region Patch. A SHARP is a DRMS series that contains (1) various space-weather quantities calculated from the photospheric vector magnetogram data and stored as FITS header keywords, and (2) 31 data segments (described in detail below), including each component of the vector magnetic field, the line-of-sight magnetic field, continuum intensity, doppler velocity, error maps and bitmaps. The data segments are not full-disk; rather, they are partial-disk, automatically-identified active region patches. SHARPs are calculated every 12 minutes. Often, there is more than one active region on the solar disk at any given time. Thus, SHARPs are indexed by two prime keys: time, T_REC, and HMI Active Region Patch Number, HARPNUM.

Note that HARPNUMs in the nrt and defnitive data series will be different.

SHARP（空间天气预报HMI活动区域块）数据集近实时数据在CCD坐标中的描述。SHARP代表空间天气预报HMI活动区域块，该数据集包含以下内容：(1) 从光球矢量磁图数据计算得出的各种空间天气量，并以FITS头关键字的形式存储，以及(2) 31个数据段（以下将详细描述），包括矢量磁场的各个分量、视向磁场、连续强度、多普勒速度、误差图和位图。这些数据段并非全盘数据，而是部分盘数据的自动识别活动区域块。SHARPs每12分钟计算一次。通常，在任意给定时间内，太阳盘上存在多个活动区域。因此，SHARPs通过两个关键索引进行标识：时间，T_REC，以及HMI活动区域块编号，HARPNUM。
请注意，在近实时和确定数据系列中的HARPNUMs将有所不同。

搜集汇总

背景与挑战

背景概述

SHARP Near-Real-Time Data是一个太阳动力学观测站(SDO)提供的近实时空间天气数据集，主要包含太阳活动区域的磁图和物理参数测量，时间覆盖从2012年至2026年。数据集提供了丰富的太阳物理参数和元数据，适用于太阳活动研究和空间天气预报。