学术论文

      辐射带AP9模式在南大西洋异常区的系统性量化评估

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

      摘要:
      针对目前辐射带AP9模式量化评估不够系统的问题,基于F10.7指数确定高、中、低太阳活动水平,以三种太阳活动水平条件下NOAA-15观测的140~500 MeV的全向质子通量为参考数据,以南大西洋异常区为对比区域,定义边界吻合度和大小量级差为评估指标,将辐射带AP9模式分别与AP8模式和参考数据进行对比,对AP9模式进行系统性量化评估.结果表明,AP8和AP9模式均能重构出南大西洋异常区,但AP8模式重构的南大西洋异常区轮廓与观测结果更为吻合.平均而言,AP8和AP9模拟结果均比观测值高,AP8比AP9更接近观测值.太阳活动水平越低,AP9与观测之间的差距越小.
      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 500 MeV 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.
      作者: 马杰 [1] 方涵先 [1] 王世金 [2] 王栖溪 [3] 翁利斌 [1] 敬文琪 [1] 郭哲 [1]
      Author: MA Jie [1] FANG Hanxian [1] WANG Shijin [2] WANG Qixi [3] WENG Libin [1] JING Wenqi [1] GUO Zhe [1]
      作者单位: 解放军理工大学气象海洋学院 南京211101 北京天工科仪辐射技术有限公司 北京100080 解放军31010部队 北京100081
      刊 名: 空间科学学报 ISTICPKU
      年,卷(期): 2017, 37(4)
      分类号: P352
      在线出版日期: 2017年8月30日
      基金项目: 国家自然科学基金项目资助