Measurements of the Aerosol Light-Scattering Coefficient at Ambient and 85% Relative Humidity on the ONR Pelican During ACE-2

Abstract

The ultimate goal of this study, as originally conceived, is the determination of aerosol hygroscopicity and its impact on physical (e.g., size) and optical (e.g., scattering coefficient) properties of marine aerosols on large spatial scales. In the course of our analysis, it has further become clear that relating aerosol hygroscopicity to chemical composition, particularly organic composition, is an integral component of this research. Additionally, associated with the renewal of funding in 2002, goals concerning the interaction of marine aerosols with marine boundary layer (MBL) clouds have been added. These new goals include: 1) assessment of the relative impacts of purely meteorological and aerosol factors on cloud albedo, 2) determination of the impact of very large CCN on cloud albedo, 3) assessment of the impact of cloud processing on aerosol light scattering, and 4) explore, observationally, the impact of organics on CCN activation in MBL clouds.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2003
Accession Number
ADA629995

Entities

People

  • David S. Covert
  • Dean A. Hegg

Organizations

  • University of Washington

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Atmospheric Sciences
  • Boundary Layer
  • Chemical Analysis
  • Chemical Composition
  • Chemistry
  • Coefficients
  • Data Sets
  • Humidity
  • Hygroscopicity
  • Light Scattering
  • Measurement
  • Mie Scattering
  • Scattering
  • Sea Surface Temperature
  • Surface Temperature
  • Water Vapor

Fields of Study

  • Environmental science

Readers

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