Addition of Vertical Velocity to a One-Dimensional Aerosol and Trace Gas Model

Abstract

This report describes the method used to include large-scale vertical motions, such as subsidence and lifting in the 1-D (dimensional) NRL aerosol model (MARBLES), in which all aerosol sources, sinks, and transformation processes take place within the horizontal layers defined as cells. The large-scale convergences and divergences'in the wind field responsible for the vertical motion must be generated externally, such as by the Navy's 3-D mesoscale model COAMPS (Coupled Ocean Atmosphere Meteorological Prediction System). The aerosol model is run along an air-mass trajectory generated from the output of COAMPS that includes vertical profiles of meteorological data required by the aerosol model. The 1-D aerosol model can be visualized as a Lagrangian column moving with a mean horizontal wind speed. Tests are used to illustrate the performance of the model, and the conditions under which the 1-D (horizontally homogeneous) solution is valid are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 12, 2005
Accession Number
ADA430126

Entities

People

  • Glendon M. Frick
  • Peter F. Caffrey
  • William A. Hoppel

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Air Masses
  • Atmospheres
  • Atmospheric Motion
  • Boundaries
  • Boundary Layer
  • Convergence
  • Equations
  • Fluid Flow
  • Fluids
  • Gases
  • Layers
  • Meteorology
  • Three Dimensional
  • Trace Gases
  • Turbulence
  • Turbulent Diffusion
  • Turbulent Mixing

Fields of Study

  • Environmental science

Readers

  • Aerosol Science/Aerosol Physics
  • Computational Modeling and Simulation
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers