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Estimation of $$^{222}$$Rn concentration in the lower troposphere during precipitation using wet scavenging model for its decay products

Takeyasu, Masanori ; Takeishi, Minoru 

The atmospheric $$^{222}$$Rn concentration in rain clouds was estimated by using the wet scavenging model of its decay products with the observed data of the environmental radiation. The origin of the $$^{222}$$Rn was also discussed, when a large increase of the radiation was observed. The estimation was done for a rainfall event on Dec. 26-27, 2003, when a large increase of the radiation was observed in Tokai-mura in Ibaraki, Japan. From a backward trajectory analysis, the origin of $$^{222}$$Rn atoms for that event was back-tracked to the northeastern part of China, and it was expected that the large amount of $$^{222}$$Rn exhalated in the northeastern part of China was transported to Tokai-mura by the Eurasian continental air mass.

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English

Journal

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Asian Journal of Atmospheric Environment

Volume

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4

Number

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1

Pages

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p.20 - 25

Publication Year/Month

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2010/06

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Paper URL

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https://doi.org/10.5572/ajae.2010.4.1.020

DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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