Comprehensive evaluation of the vector magnetic field data from Macao Science Satellite-1A  

作　　者：XinYi Rang Chao Xiong YuYang Huang ChunYu Xu FengJue Wang BoHao Qian Fan Yin SiShan Song Keke Zhang and PengFei Liu 

机构地区：[1]School of Earth and Space Science and Technology,Wuhan University,Wuhan 430072,China [2]Macao Institute of Space Technology and Application,Macao University of Science and Technology,Macao 999078,China

出　　处：《Earth and Planetary Physics》2025年第3期521-531,共11页地球与行星物理(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.42474200 and 42174186);Chao Xiong is supported by the Dragon 6 cooperation 2024-2028(Project No.95437).

摘　　要：In this study,we present a comprehensive evaluation of the magnetic field measurements from the Vector Field Magnetometer(VFM)aboard the recently launched Macao Science Satellite-1(MSS-1).One-year data from November 2,2023,to November 1,2024,are considered.The MSS-1 flies with a low inclination(41°)and is designed to provide high-resolution magnetic field measurements,especially for monitoring the evolution of the South Atlantic Anomaly.Earlier studies confirmed the possibility of using MSS-1A data to model the Earth’s main magnetic field(e.g.,Jiang Y et al.,2024).Therefore,in this study we focus on the magnetic signatures related to the external field,which are primarily associated with magnetospheric and ionospheric currents.The global distributions of the magnetic residuals from MSS-1A show a pattern consistent with that derived from the European Space Agency’s Swarm A satellite.A statistical survey of the conjugated observations(withΔt<5 min andΔR<150 km)between the two satellites showed that the difference between their magnetic residuals is within±3 nanoteslas.By separating the magnetic residuals at the noon and midnight hours,we see that the MSS-1A data can effectively capture features of the magnetospheric and ionospheric currents,such as the magnetospheric ring current and ionospheric equatorial electrojet.Moreover,the magnetic residuals from MSS-1A show a diamagnetic effect caused by post-sunset equatorial plasma bubbles,which also suggests that the MSS-1A data have the potential to reveal the ionospheric structures.The comprehensive evaluations performed within this study demonstrate that the MSS-1A provides high-quality magnetic field data reaching the level of the Swarm satellite,which enables a deeper understanding of the modeling of Earth’s magnetic field as well as monitoring of the magnetic environment.

关 键 词：MSS satellite magnetic field residuals ring current equatorial electrojet diamagnetic effect 

分 类 号：P353[天文地球—空间物理学]