X
Advance Search
  • Wang, X. Y., Cao, X., Ma, X., Zhang, X. X., Chen, A. Q., Dong, J. H., Ni, B. B., and Dou, X. K. (2023). Cross-satellite calibration of high-energy electron fluxes measured by FengYun-4A based on Arase observations. Earth Planet. Phys., 7(5), 565–575. DOI: 10.26464/epp2023076
    Citation: Wang, X. Y., Cao, X., Ma, X., Zhang, X. X., Chen, A. Q., Dong, J. H., Ni, B. B., and Dou, X. K. (2023). Cross-satellite calibration of high-energy electron fluxes measured by FengYun-4A based on Arase observations. Earth Planet. Phys., 7(5), 565–575. DOI: 10.26464/epp2023076
Open Access    

Cross-satellite calibration of high-energy electron fluxes measured by FengYun-4A based on Arase observations

  • We use the High-energy Electron Experiments (HEP) instrument onboard Arase (ERG) to conduct an energy-dependent cross-satellite calibration of electron fluxes measured by the High Energy Particle Detector (HEPD) onboard FengYun-4A (FY-4A) spanning from April 1, 2017, to September 30, 2019. By tracing the two-dimensional magnetic positions (L, magnetic local time MLT) of FY-4A at each time, we compare the datasets of the conjugate electron fluxes over the range of 245–894 keV in 6 energy channels for the satellite pair within different sets of L × MLT. The variations in the electron fluxes observed by FY-4A generally agree with the Arase measurements, and the percentages of the ratios of electron flux conjunctions within a factor of 2 are larger than 50%. Compared with Arase, FY-4A systematically overestimates electron fluxes at all 6 energy channels, with the corresponding calibration factors ranging from 0.67 to 0.81. After the cross-satellite calibration, the electron flux conjunctions between FY-4A and Arase show better agreement, with much smaller normalized root mean square errors. Our results provide a valuable reference for the application of FY-4A high-energy electron datasets to in-depth investigations of the Earth’s radiation belt electron dynamics.
  • loading

Catalog

    Turn off MathJax
    Article Contents

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return