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Titolo:
Parameterisation of radionuclide deposition in atmospheric long-range transport modelling
Autore:
Baklanov, A; Sorensen, JH;
Indirizzi:
Danish Inst Fundamental Metrol, Meteorol Res Div, DK-2100 Copenhagen, Denmark Danish Inst Fundamental Metrol Copenhagen Denmark DK-2100 hagen, Denmark
Titolo Testata:
PHYSICS AND CHEMISTRY OF THE EARTH PART B-HYDROLOGY OCEANS AND ATMOSPHERE
fascicolo: 10, volume: 26, anno: 2001,
pagine: 787 - 799
SICI:
1464-1909(2001)26:10<787:PORDIA>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
DRY DEPOSITION; DISPERSION MODEL; REGIONAL-SCALE; PARTICLES; ACCIDENTS; SULFUR; GASES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Baklanov, A Danish Inst Fundamental Metrol, Meteorol Res Div, Lyngbyvej 100, DK-2100 Copenhagen, Denmark Danish Inst Fundamental Metrol Lyngbyvej 100Copenhagen Denmark DK-2100
Citazione:
A. Baklanov e J.H. Sorensen, "Parameterisation of radionuclide deposition in atmospheric long-range transport modelling", PHYS CH P B, 26(10), 2001, pp. 787-799

Abstract

Radionuclides are released into the atmosphere in the form of gases or aerosols. The aerosols have different particle sizes (0.01-60 mum). This paperanalyses parameterisations of the removal processes by dry and wet deposition of radionuclides to the ground, and recommends some parameterisations and their realisation for the DERMA model as an example. It is shown that the washout coefficient strongly depends on the particle size. This dependence, however, is not included in most atmospheric dispersion models. Therefore, a revised formulation of the wet deposition parameterisation for particles of different size is suggested. The effect of gravitational settling is included in the dry deposition parameterisation by a combination of Stokes'law with the Cunningham correction for small particles and an iterative procedure solving the differential equation for the terminal settling velocity for large particles. Comparisons of simulation results for the Algeciras accident, Spain, with measurement data from the European monitoring networkare presented and discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 12:46:13