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

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.
Authors:
; ; ; ;  [1] ;  [2]
  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)
Publication Date:
OSTI Identifier:
21152484
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1034; Journal Issue: 1; Conference: NRE-VIII: 8. International symposium on the natural radiation environment, Buzios, RJ (Brazil), 7-12 Oct 2007; Other Information: DOI: 10.1063/1.2991257; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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