地球与行星物理论评（中英文）2026，Vol.57Issue(3)：292-309,18.DOI:10.19975/j.dqyxx.2025-022
地球辐射带电子数据同化建模研究进展
Research advances in the data assimilative modeling of the Earth's radiation belt electrons
摘要
Abstract
The Earth's radiation belts are regions where high-energy charged particles congregate in near-Earth space.Given that high-energy particles in the radiation belts pose a severe threat to the safety of spacecraft in orbit and astronauts,it is of vital importance to gain a thorough understanding of the spatiotemporal dynamic evolution of radiation belt particles.Data assimilation method can effectively integrate satellite observations with numerical simulation results,thereby enabling the reconstruction of the spatiotemporal evolution process of radiation belt electrons.This paper systematically summarizes the research achievements in data assimilation modeling of the Earth's radiation belt electrons in recent years.First,we provide a detailed introduction to the three-dimensional data assimilative model of outer radiation belt electrons(TDAMORE),which is based on the Kalman filter method.Building on TDAMORE,further research on data assimilation modeling of radiation belt electrons is carried out using observational data from satellites of different orbital types,such as Van Allen Probes,Arase,and FY-4A.This as-similation model fully leverages the respective strengths of satellite observations and numerical models,success-fully reconstructing the short-term and long-term dynamic evolution processes of electrons with different energies and pitch angles in the outer radiation belt region(L=3-7),as well as their response characteristics to geomagnetic activity.Based on the assimilation results,further research on predicting the flux of radiation belt electrons during geomagnetic storms is conducted,and the predictive performance of the model is evaluated.Finally,this paper dis-cusses and looks ahead to the future development directions and potential application scenarios of radiation belt as-similation models.关键词
地球辐射带/数据同化/卡尔曼滤波/电子通量预测Key words
Earth's radiation belts/data assimilation/Kalman filter/electron flux prediction分类
天文与地球科学引用本文复制引用
曹兴,倪彬彬,雷源,罗陶荣,王晓宇..地球辐射带电子数据同化建模研究进展[J].地球与行星物理论评（中英文）,2026,57(3):292-309,18.基金项目
国家自然科学基金资助项目(42025404,42188101,42374193) （42025404,42188101,42374193）
国家重点研发计划(2022YFF0503700,2022YFF0503900)Supported by the National Natural Science Foundation of China(Grant Nos.42025404,42188101,42374193)and the National Key R&D Program of China(Grant Nos.2022YFF0503700,2022YFF0503900) （2022YFF0503700,2022YFF0503900）
