Development and verification of long-range atmospheric transport model of radon-222 and lead-210 including scavenging process

Journal Article · Thu Aug 07 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2991257· OSTI ID:21152484

Hirao, Shigekazu; Nono, Yuki; Yamazawa, Hiromi; Moriizumi, Jun; Iida, Takao ^[1]; Yoshioka, Katsuhiro ^[2]

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1. Graduate School of Engineering, Nagoya University, Nagoya 464-8603 (Japan)
2. Shimane Prefectural Institute of Environmental Science, 582-1, Nishihamasada, Matsue, Shimane 690-0122 (Japan)

A three-dimensional Eulerian atmospheric long-range transport model of radon-222 ({sup 222}Rn) and lead-210 ({sup 210}Pb) coupled with meteorological model MM5 was developed. The model calculates advection, diffusion, radiation decay and deposition processes in a horizontal scale of several thousand kilometers. This model was applied to East Asia. Performance of the model was evaluated with measured hourly surface air {sup 222}Rn concentration and monthly {sup 210}Pb deposition. The model verification was done with respect to the following points: 1) the sensitivity of vertical distribution of turbulent diffusivity and 2) the accuracy of spatial distribution of precipitation. In this report, improvement of the model performance is also discussed.

• OSTI ID: 21152484
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1034; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ADVECTION
ASIA
DEPOSITION
LEAD 210
LONG-RANGE TRANSPORT
MATHEMATICAL MODELS
METEOROLOGY
PRECIPITATION
RADIONUCLIDE MIGRATION
RADON
RADON 222
SENSITIVITY
SPATIAL DISTRIBUTION
SURFACE AIR
THREE-DIMENSIONAL CALCULATIONS
WASHOUT