表面空气中-7和-212的宏观空间时间变化是由气象因素驱动的
Faisal Izwan Abdul Rashid1, Mohd Idzat Idris2, Irman Abdul Rahman2
1Nuclear Technology Research Centre, Faculty of Science and Technology, National University of Malaysia, Bangi, Selangor, 43600, Malaysia; Malaysian Nuclear Agency, Bangi, Kajang, Selangor, 43000, Malaysia.
Environmental research
|November 8, 2025
概括
这项研究分析了来自71个站点 (2010-2023) 的大气烯-7 (Be) 和-212 (Pb) 度. 结果显示出明显的空间和时间趋势,受降水和温度等气象因素的影响.
科学领域:
- 环境科学 环境科学
- 放射化学 放射化学是指辐射化学.
- 大气科学 大气科学
背景情况:
- 天然放射性核酸-7 (Be) 和-212 (Pb) 是大气中的组成部分.
- 对于它们的宏观空间时间变化和气象影响的理解有限.
研究的目的:
- 调查地表空气中Be和Pb的空间和时间趋势.
- 检查这些放射性核素与关键气象参数之间的相互作用.
- 分析来自71个国际监测系统 (IMS) 站的数据,涵盖2010-2023.
主要方法:
- 分析71个IMS放射性核体站的Be和Pb测量结果.
- 检查空间 (站,半球) 和时间 (年,月,季节) 趋势.
- 与气象驱动因素 (降水,温度,太阳活动) 的相关性分析和分层聚类.
主要成果:
- 全球每月平均度:3.59 mBq m-3用于Be7和46.59 mBq m-3用于Pb212.
- 在北半球观察到更高的度.
- 发现了显著的站级变化,并产生了轻微的半球和时间效应.
- Be显示了度模式和春夏最大值; Pb受当地气象学影响,具有半球特定周期.
- 降水降低了度,而温度增加了它们;太阳活动对Be.Be产生了负面影响.
结论:
- 在宏观尺度上,Be和Pb表现出不同的时空趋势.
- 气象因素显著影响放射性核化物度.
- 这项研究增强了对全球和半球大气放射性动态的理解.
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