A novel approach for the characterisation of transport and optical properties of aerosol particles near sources - Part II: Microphysics-chemistry-transport model development and application

Álvaro M. Valdebenito B, Sandip Pal, Andreas Behrendt, Volker Wulfmeyer, Gerhard Lammel

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

A new high-resolution microphysics-chemistry-transport model (LES-AOP) was developed and applied for the investigation of aerosol transformation and transport in the vicinity of a livestock facility in northern Germany (PLUS1 field campaign). The model is an extension of a Large-Eddy Simulation (LES) model. The PLUS1 field campaign included the first deployment of the new eye-safe scanning aerosol lidar system of the University of Hohenheim. In a combined approach, model and lidar results were used to characterise a faint aerosol source. The farm plume structure was investigated and the absolute value of its particle backscatter coefficient was determined. Aerosol optical properties were predicted on spatial and temporal resolutions below 100 m and 1 min, upon initialisation by measured meteorological and size-resolved particulate matter mass concentration and composition data. Faint aerosol plumes corresponding to a particle backscatter coefficient down to 10-6 sr-1 m-1 were measured and realistically simulated. Budget-related quantities such as the emission flux and change of the particulate matter mass, were estimated from model results and ground measurements.

Original languageEnglish
Pages (from-to)2981-2990
Number of pages10
JournalAtmospheric Environment
Volume45
Issue number17
DOIs
StatePublished - Jun 1 2011

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Keywords

  • Aerosol optical properties
  • Aerosol physical modelling
  • Agricultural aerosol source
  • Large-eddy simulation
  • Lidar signal

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