- Conference date: 3–8 August 2008
- Location: Foz do Iguaçu (Brazil)
The objective of this study is to investigate, by observational means, the magnitude and sign of relationship between cloud properties and aerosol loading. Ground‐based measurements at the Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) Southern Great Plains (SGP) site form the basis of this study. The relationship is investigated using an 8‐year dataset (from 2000 to 2007) of fair‐weather cumuli (FWC) and mostly non‐absorbing aerosols. The surface data are accompanied by a 6‐year cloud product (2002–2007) from available collocated and coincident Terra/Aqua satellite observations. Thermodynamical, meteorological and radiative parameters also are included in our statistical analysis. The overall assessment indicates that the strong variability of FWC properties over this region may not necessarily be associated with aerosol loading. Also, we demonstrate that the sizes of many cumulus clouds are smaller or comparable to 1‐km resolution of the satellite cloud product. Therefore, the uncertainties for satellite retrievals may be substantial and satellite‐derived statistics of cumulus clouds should be used with caution.
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