A new statistical approach to improve the satellite-based estimation of the radiative forcing by aerosol–cloud interactions

Bibliographic Details
Authors and Corporations: Patel, Piyushkumar N., Quaas, Johannes, Kumar, Raj
Title: A new statistical approach to improve the satellite-based estimation of the radiative forcing by aerosol–cloud interactions
In: Atmospheric Chemistry and Physics, 17, 2017, 5, p. 3687-3698
published:
Copernicus GmbH
Physical Description:3687-3698
ISSN/ISBN: 1680-7324
Summary:<jats:p>Abstract. In a previous study of Quaas et al. (2008) the radiative forcing by anthropogenic aerosol due to aerosol–cloud interactions, RFaci, was obtained by a statistical analysis of satellite retrievals using a multilinear regression. Here we employ a new statistical approach to obtain the fitting parameters, determined using a nonlinear least square statistical approach for the relationship between planetary albedo and cloud properties and, further, for the relationship between cloud properties and aerosol optical depth. In order to verify the performance, the results from both statistical approaches (previous and present) were compared to the results from radiative transfer simulations over three regions for different seasons. We find that the results of the new statistical approach agree well with the simulated results both over land and ocean. The new statistical approach increases the correlation by 21–23 % and reduces the error compared to the previous approach. </jats:p>
Type of Resource:E-Article
Source:Copernicus GmbH (CrossRef)
Language: English