Climate factors from different regions were employed to assess the impact on Biosphere Dose Conversion Factors (BDCF) in the biosphere assessment of radioactive waste disposal. Climate characteristics of tropical and subtropical regions were considered alongside diverse climatic regions, observing the influence of different radionuclides. Data on annual rainfall, monthly rainfall distribution, temperature, and sunlight were collected for various regions. The relationship between rainfall and the processes of flooding, as well as erosion, was also established. Furthermore, the Water Budget Model (WBM) was used to calculate the required surface water flow parameters for the biosphere model. The results indicated limited effects from flooding and erosion, which could be evaluated using simplified methods. Under conditions of high evapotranspiration, low rainfall, or uneven rainfall distribution, specific radionuclides exhibited higher BDCF values. For regions currently and prospectively aligning with these climate characteristics, a comprehensive investigation into climate factors and their correlation with surface and near-surface hydrology is recommended to mitigate uncertainty.
Keywords: Annual rainfall; Biosphere assessment; Erosion; Flooding; Groundwater released; Rainfall distribution; Sunshine; Temperature.
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