2014-2016年北半球日侧极盖区的场向Poynting通量数据集

A dataset of field-aligned Poynting flux in the dayside polar cap of the northern hemisphere during 2014-2016

电磁能在极区高层大气中的传输以及时空分布是当前的热点问题,也是研究极区高层大气环境和空间天气预报模式的重要课题。通常采用低高度极轨卫星的观测数据来估算电磁能的幅度和方向。不断积累电磁能数据,将有利于支撑我国极区电磁能的传输和变化特性研究。本文以北半球2014–2016年DMSP F17卫星的等离子体速度和磁场探测数据为基础,估算出日侧极盖区场向Poynting通量、水平对流电场和磁场扰动的分布数据。本数据所用的初始DMSP F17卫星数据质量高,估算过程严谨合理,数据记录完整,可为极区电离层/热层的能量传输和耗散研究提供重要的数据支持。

The transport of electromagnetic energy in the polar upper atmosphere and its spatial and temporal distribution are current hot issues and important topics for studying the polar upper atmospheric environment and space weather forecasting models.Researchers usually adopted the observations from low-altitude polar-orbiting satellites to estimate the magnitude and direction of electromagnetic energy.The continuous accumulation of electromagnetic energy data will be beneficial to the study on the transmission and variation characteristics of electromagnetic energy in the polar ionosphere in China.In this paper,we estimated the distribution of field-aligned Poynting flux,horizontal convection electric field and magnetic field perturbation in the dayside polar cap based on the plasma velocity and magnetic field data of DMSP F17 satellite in the northern hemisphere during 2014-2016.The initial DMSP F17 satellite data included in this dataset are of high quality.The estimation process is rigorous and reasonable,and the data records are complete.The dataset can provide important data support for the study on energy transport and dissipation in the ionosphere/thermosphere in the polar region.