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首页> 外文期刊>Journal of Environmental Radioactivity >Time resolution requirements for civilian radioxenon emission data for the CTBT verification regime
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Time resolution requirements for civilian radioxenon emission data for the CTBT verification regime

机译：《全面禁试条约》核查制度的民用放射性氙辐射数据的时间分辨率要求

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摘要

The capability of the noble gas component of the International Monitoring System as a verification tool for the Comprehensive Nuclear-Test-Ban Treaty is deteriorated by a background of radioxenon emitted by civilian sources. One of the possible approaches to deal with this issue, is to simulate the daily radioxenon concentrations from these civilian sources at noble gas stations by using atmospheric transport models. In order to accurately quantify the contribution from these civilian sources, knowledge on the releases is required. However, such data are often not available and furthermore it is not clear what temporal resolution such data should have. In this paper, we assess which temporal resolution is required to best model the Xe-133 contribution from civilian sources at noble gas stations in an operational context. We consider different sampling times of the noble gas stations and discriminate between nearby and distant sources. We find that for atmospheric transport and dispersion problems on a scale of 1000 km or more, emission data with subdaily temporal resolution is generally not necessary. However, when the source-receptor distance decreases, time-resolved emission data become more important. The required temporal resolution of emission data thus depends on the transport scale of the problem. In the context of the Comprehensive Nuclear-Test-Ban Treaty, where forty noble gas stations will monitor the whole globe, daily emission data are generally sufficient, but for certain meteorological conditions, better temporally resolved emission data are required.
机译：国际监测系统的稀有气体成分作为《全面禁止核试验条约》的核查工具的能力因民用源发出的放射性氙的背景而恶化。解决此问题的一种可能方法是，通过使用大气传输模型来模拟来自稀有加油站这些平民源的每日放射性氙浓度。为了准确地量化这些平民来源的贡献，需要有关释放的知识。但是，此类数据通常不可用，此外，尚不清楚此类数据应具有什么时间分辨率。在本文中，我们评估需要哪种时间分辨率来最好地模拟在操作环境中稀有加油站民用来源对Xe-133的贡献。我们考虑稀有气体站的不同采样时间，并区分附近和远处的气源。我们发现，对于规模在1000 km或更长的大气传输和扩散问题，通常不需要具有次时间分辨率的排放数据。然而，当源-受体距离减小时，时间分辨的发射数据变得更加重要。因此，排放数据所需的时间分辨率取决于问题的传输规模。在《全面禁止核试验条约》的范围内，有40个稀有加油站将对整个地球进行监测，每日排放数据通常是足够的，但是对于某些气象条件，需要更好的时间分辨排放数据。

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