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TIME-IGGCAS(Theoretical Ionospheric Model of the Earth in Institute of Geology and Geophysics,Chinese Academy of Sciences)模式是我们在前人工作的基础上完善的一个中低纬理论电离层模式.本文把该模式的结果与其他一些有代表性的经验模式和多种观测数据作了详细的对比.比较结果表明:TIME-IGGCAS模式模拟的电子浓度、电子离子温度在数量级上均与经验模型和观测符合得较好,在地方时变化、纬度变化、季节变化这些变化形态上也符合得较好,并且模式能很好地模拟出赤道异常、冬季异常和半年异常这些电离层异常,这为我们进一步开发电离层数据同化模式奠定了良好的基础.无论是与经验模式还是与观测相比,TIME-IGGCAS模式均低估了电子温度而高估了离子温度,模式在日出日落时段和在低高度模拟的偏差较大,这些结果为我们以后进一步完善模式、改善模式的模拟能力提供了参考。
The model of TIME-IGGCAS (Theoretical Ionospheric Model of the Earth in Institute of Geology and Geophysics, Chinese Academy of Sciences) is a perfect low-latitude ionospheric model based on the work of predecessors. In this paper, Some other representative empirical models and various observational data are compared in detail.Comparison results show that the simulated electron concentration and electron temperature in the TIME-IGGCAS model are in good agreement with the empirical models and observations in The changes in time, latitude and season also coincide well with each other, and the model can well simulate the ionospheric anomalies such as the equatorial anomaly, the winter anomaly and the six-year anomaly, which further develop the ionospheric data assimilation model Laid a good foundation.Either the TIME-IGGCAS model underestimates the electron temperature and overestimates the ion temperature, both in the sunset mode and in the low altitude model, both in empirical and in observation The results provide reference for further improving the model and improving the model’s simulation capability in the future.