articleJournal of the Atmospheric SciencesFeb 1, 2002Closed access

Tropospheric Aerosol Optical Thickness from the GOCART Model and Comparisons with Satellite and Sun Photometer Measurements

MCMian ChinPGPaul GinouxSKStefan KinneOTOmar TorresBNB. N. Holben

Goddard Space Flight Center · University of Maryland, Baltimore County · +3 more institutions

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Abstract

The Georgia Institute of Technology–Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model is used to simulate the aerosol optical thickness � for major types of tropospheric aerosols including sulfate, dust, organic carbon (OC), black carbon (BC), and sea salt. The GOCART model uses a dust emission algorithm that quantifies the dust source as a function of the degree of topographic depression, and a biomass burning emission source that includes seasonal and interannual variability based on satellite observations. Results presented here show that on global average, dust aerosol has the highest � at 500 nm (0.051), followed by sulfate (0.040), sea salt (0.027), OC (0.017), and BC (0.007).…

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Topics & keywords

Topics
Keywords
  • Aerosol
  • Total Ozone Mapping Spectrometer
  • Environmental science
  • Satellite
  • Sea salt
  • Atmospheric sciences
  • Troposphere
  • Radiometer
UN Sustainable Development Goals
  • Life below water
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