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Chinese Journal of Space Science ›› 2017, Vol. 37 ›› Issue (4): 395-402.doi: 10.11728/cjss2017.04.395

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Systemic Quantitative Evaluation of the Radiation Belt AP9 Model in SAA Region

MA Jie1, FANG Hanxian1, WANG Shijin2, WANG Qixi3, WENG Libin1, JING Wenqi1, GUO Zhe1   

  1. 1. Institute of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101;
    2. TiAmoTech Co., Ltd., Beijing 100080;
    3. Unit 31010 of PLA, Beijing 100081
  • Received:2016-05-31 Revised:2016-11-09 Online:2017-07-15 Published:2017-07-20

Abstract:

The evaluation of the radiation belt AP9 model is not systematic enough. The high, medium and low solar activity level is classified in view of the F10.7 index. The corresponding data of the proton flux between 140 and 500MeV observed by NOAA-15 are chosen as the reference data. The objective region is the South Atlantic Anomaly (SAA) region. The evaluation criteria conclude the goodness of boundary fitness and the magnitude difference between model and observation. By contrasting with the current applied AP8 model and reference data under high, medium and low solar activity level, the new radiation belts proton model AP9 is systematically and quantitatively evaluated. The results show that both the AP8 and AP9 model can reconstruct the SAA region. However, the outline of SAA region reconstructed by AP8 is more consistent with the observation than that of AP9. On the whole, the AP8 and AP9 results are higher than the observations, and AP8 results are closer to the observations than AP9 results. The lower the solar activity level is, the smaller the difference between AP9 model results and observations is.

Key words: AP9 Radiation Belt Model, Evaluation, South Atlantic Anomaly

CLC Number: