Modeling atmospheric deposition using a stochastic transport model Metadata

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Title

  • Main Title Modeling atmospheric deposition using a stochastic transport model

Creator

  • Author: Buckley, R. L.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Savannah River Site (S.C.)
    Place of Publication: South Carolina
    Additional Info: Savannah River Site (United States)

Date

  • Creation: 1999-12-17

Language

  • English

Description

  • Content Description: An advanced stochastic transport model has been modified to include the removal mechanisms of dry and wet deposition. Time-dependent wind and turbulence fields are generated with a prognostic mesoscale numerical model and are used to advect and disperse individually released particles that are each assigned a mass. These particles are subjected to mass reduction in two ways depending on their physical location. Particles near the surface experience a decrease in mass using the concept of a dry deposition velocity, while the mass of particles located within areas of precipitation are depleted using a scavenging coefficient. Two levels of complexity are incorporated into the particle model. The simple case assumes constant values of dry deposition velocity and scavenging coefficient, while the more complex case varies the values according to meteorology, surface conditions, release material, and precipitation intensity. Instantaneous and cumulative dry and wet deposition are determined from the mass loss due to these physical mechanisms. A useful means of validating the model results is with data available from a recent accidental release of Cesium-137 from a steel-processing furnace in Algeciras, Spain in May, 1998. This paper describes the deposition modeling technique, as well as a comparison of simulated concentration and deposition with measurements taken for the Algeciras release.
  • Physical Description: Medium: P; Size: vp.

Subject

  • Keyword: Metal Industry
  • Keyword: Radionuclide Migration
  • Keyword: Radiation Accidents
  • Keyword: Deposition
  • Keyword: Mathematical Models
  • Keyword: Washout
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Cesium 137
  • Keyword: Spain

Source

  • Other Information: PBD: 17 Dec 1999

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: WSRC-TR--99-00409
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/750120
  • Office of Scientific & Technical Information Report Number: 750120
  • Archival Resource Key: ark:/67531/metadc711808

Note

  • Display Note: INIS; OSTI as DE00750120