Long-range atmospheric transport of radon in East Asia and deposition of its progenies in Japan
Long-range atmospheric transport of radon in East Asia and deposition of its progenies in Japan
复制标题
东亚氡的远距离大气传输及其子体在日本的沉积
DOI：
10.1093/rpd/ncac010
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发表时间：
2022
影响因子：
1
通讯作者：
Takafumi Kawano
中科院分区：
文献类型：
--
作者：
Hiromi Yamazawa;Yu Cai;Tatsuya Matsumoto;Jun Moriizumi;Hidenao Hasegawa;Takafumi Kawano
应用222rn及其子代的三维远程大气输送模式模拟了日本及其邻近海域的210pb沉降。模式模拟的冬季月降水量和210pb沉降值与观测值比较有利，但在青森地区异常低估。该模式成功地模拟了冬季日本海沿岸每月大的沉积量，接近200 Bq m−2，相比之下，其他地区的沉积量大约小10倍。研究还指出，重沉积区沿海岸线呈窄带状结构，宽度为数十公里，210pb沉积量与重沉积区背风山高呈正相关。
A three-dimensional long-range atmospheric transport model for222Rn and its progenies was applied to simulate210Pb deposition in Japan and its adjacent waters. Monthly precipitation and210Pb deposition simulated by the model for winter months were favorably compared with observational data although they were exceptionally underestimated in Aomori. The large monthly deposition along the Japan Sea coast lines during winter was successfully simulated by the model to be nearly 200 Bq m−2, which was contrasted by about 10-fold smaller deposition in other regions. It was also pointed out that the heavy deposition areas formed a narrow band structure along the coastline with width of several tens of kilometers and210Pb deposition amount positively correlated with the height of mountains located leeward of the heavy deposition areas.