The Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, which occurred in March 2011, has released large amounts of radionuclides (such as radioiodine and radiocesium) into the atmosphere, resulting in the contamination of terrestrial and marine environments. To assess radiological and environmental effects of the FDNPP-derived radionuclides, huge amounts of radioactive monitoring activities have been conducted to environmental samples. In this paper, we review results of atmospheric radioactivity monitoring for the FDNPP accident. Learning from atmospheric radioactivity monitoring of the FDNPP accident is as follows; 1. At the initial stage of accident, large spatiotemporal variability of emitted radionuclides near the FDNPP site occurred at short (less than 1 h) time scale and small (less than 10 km) space scale due to complicated emissions of radionuclides and variable flow of Fukushima radioactive plume, 2. Chemical form of FDNPP-derived radionuclides, in which a typical example is coexistence of 137Cs-bearing submicron particles and 137Cs-bearing large hot particles in the plume, is important to have better understanding of their atmospheric behaviors as do released mechanisms and their fate in environment, 3. Atmospheric effects of the FDNPP accident continue over 8 years, in which high activity levels of the FDNPP-derived 137Cs in surface air and deposition have continued at least until the end of 2018 owing to the post-accident release and resuspension because most of the FDNPP-derived 137Cs deposited on the ground surface still remains in the soil surface as a potential source of atmospheric 137Cs.

中文翻译：

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福岛核事故的大气影响：从大气监测的角度进行回顾。

2011年3月发生的福岛第一核电站事故已将大量放射性核素（例如放射性碘和放射性铯）释放到大气中，从而污染了陆地和海洋环境。为了评估FDNPP衍生的放射性核素的放射学和环境影响，已对环境样品进行了大量的放射性监测活动。在本文中，我们回顾了FDNPP事故的大气放射性监测结果。从FDNPP事故的大气放射性监测中学习的内容如下：1.在事故初期，