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Title: Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates

The aerosol Single Scattering Albedo (SSA) over the global oceans is evaluated based on polarimetric measurements by the PARASOL satellite. The retrieved values for SSA and Aerosol Optical Depth (AOD) agree well with the ground-based measurements of the AErosol RObotic NETwork (AERONET). The global coverage provided by the PARASOL observations represents a unique opportunity to evaluate SSA and AOD simulated by atmospheric transport model runs, as performed in the AeroCom framework. The SSA estimate provided by the AeroCom models is generally higher than the SSA retrieved from both PARASOL and AERONET. On the other hand, the mean simulated AOD is about right or slightly underestimated compared with observations. An overestimate of the SSA by the models would suggest that these simulate an overly strong aerosol radiative cooling at top-of-atmosphere (TOA) and underestimate it at surface. This implies that aerosols have a potential stronger impact within the atmosphere than currently simulated.
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [4] ;  [7] ;  [8]
  1. SRON Netherlands Institute for Space Research, Utrecht Netherlands
  2. Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, Catonsville Maryland USA
  3. Department of Physical and Chemical Sciences, University of L'Aquila, L'Aquila Italy; CETEMPS, University of L'Aquila, L'Aquila Italy
  4. Center for International Climate and Environmental Research - Oslo, Oslo Norway
  5. KNMI Royal Netherlands Meteorological Institute, De Bilt Netherlands
  6. Norwegian Meteorological Institute, Oslo Norway
  7. Research Institute for Applied Mechanics, Kyushu University, Fukuoka Japan
  8. Pacific Northwest National Laboratory, Richland, Washington USA; Max Planck Institute for Meteorology, Hamburg Germany
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 2169-897X; KP1703020
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Geophysical Research: Atmospheres; Journal Volume: 120; Journal Issue: 18
American Geophysical Union
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
Country of Publication:
United States