Wind Linearly Interpolated 60 s Resolution Tri-axial Fluxgate Magnetometer in GSM Coordinates

Wind linearly interpolated to have the measurements on the minute at 60 s resolution tri-axial fluxgate magnetometer data in GSM coordinates. This data set consists of processed solar wind data that has been linearly interpolated to 1 min resolution at the position of the spacecraft using the interp1.m function in MATLAB. This data set was originally constructed by Dr. J.M. Weygand for Prof. R.L. McPherron, who was the principle investigator of two National Science Foundation studies: GEM Grant ATM 02-1798 and a Space Weather Grant ATM 02-08501. These data were primarily used in superposed epoch studies and cross correlation studies on solar wind. There are now two version of this data set. An off set has been found in the Wind MFI Bz component that is present after November 2004. Version 2 has this offset removed. Prof. R.L. McPherron determined the correction to be Bz = Bz - (-0.000000130406219.*odoy.*odoy + 0.000576303146.*odoy + 0.679940509 + 0.3215*cos(2*pi*(doy-171)/366)) where doy is the day of the year in units of days and odoy is the days sinces Jan 1, 1999 00:00:00 UT in units of days.

本数据集为Wind卫星的三轴磁通门磁强计数据，经线性插值至60秒分辨率（即每分钟输出一次测量值），坐标系采用GSM（Geocentric Solar Magnetospheric，地心太阳磁层）坐标。本数据集包含经预处理的太阳风数据，该数据已通过MATLAB中的interp1.m函数，在航天器所在位置被线性插值至1分钟分辨率。该数据集最初由J.M.韦根德博士为R.L.麦克弗伦教授编制，后者是两项美国国家科学基金会研究项目的首席研究员：项目编号为ATM 02-1798的GEM项目，以及项目编号为ATM 02-08501的空间天气项目。这些数据最初主要应用于太阳风领域的叠加epoch分析与互相关分析研究。目前该数据集共有两个版本。2004年11月之后的Wind卫星MFI（Magnetic Field Instrument，磁场仪器）Bz分量存在系统偏移，版本2已移除该偏移。R.L.麦克弗伦教授确定的校正公式为：Bz = Bz - (-0.000000130406219·odoy·odoy + 0.000576303146·odoy + 0.679940509 + 0.3215·cos(2π·(doy-171)/366))，其中doy为以天为单位的年中日，odoy为以天为单位的自1999年1月1日00:00:00 UT起的累计天数。