@Article{GorchakovaTarSviAniRom:2009:MoRaFo,
               author = "Gorchakova, I. A. and Tarasova, T. A. and Sviridenkov, M. A. and 
                         Anikin, P. P and Romashova, E. V.",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Modeling radiative forcing by background aerosol on the basis of 
                         measurement data",
              journal = "Izvestiya Atmospheric And Oceanic Physics",
                 year = "2009",
               volume = "45",
               number = "4",
                pages = "467--477",
                month = "Aug.",
             keywords = "optical properties, absorption, clouds.",
             abstract = "The solar radiation flux incident on the land surface and aerosol 
                         radiative forcing are calculated from measurements carried out 
                         under clear skies during the summers of 2004 and 2005 at the 
                         Zvenigorod Scientific Station (ZSS) of the A.M. Obukhov Institute 
                         of Atmospheric Physics, Russian Academy of Sciences. In these 
                         calculations, the following five models of aerosol optical 
                         parameters are used: a standard model of continental aerosol, a 
                         semiempirical model based on measurement data, and three models 
                         obtained from calculations on the basis of the Mie scattering 
                         theory for the mean size distribution of aerosol particles (which 
                         is retrieved from aureole measurements). A study of the 
                         sensitivity of the flux and forcing to the choice of aerosol model 
                         has shown that the relative error related to the model choice is 
                         not large (< 5%) for the incident radiation flux and reaches 120% 
                         for aerosol forcing at the atmospheric upper boundary. The aerosol 
                         radiative forcing at the atmospheric upper boundary is also 
                         estimated and, according to our calculations, varies from -15 to 
                         -2 W/m(2). The use (in calculations) of the values of the albedo 
                         of single-scattering and the factor of scattering-indicatrix 
                         asymmetry at a wavelength of 550 nm, which were obtained for each 
                         of the observation periods, has made it possible to significantly 
                         refine the value of aerosol radiative forcing (compared to that 
                         calculated for the means of these parameters over all the 
                         periods). An even more accurate determination of aerosol radiative 
                         forcing is possible only when data on the size-distribution of 
                         aerosol particles and their chemical composition for a certain 
                         situation under analysis are available. As a result of this study, 
                         two models of the optical parameters of background aerosol have 
                         been proposed for use in radiation calculations: a semiempirical 
                         model and a mean model obtained from the calculations based on the 
                         theory of scattering. Both models use the values of the albedo of 
                         single scattering and the factor of asymmetry (at a wavelength of 
                         550 nm) retrieved from the measurements for each of the 
                         observation periods.",
                  doi = "10.1134/S0001433809040070",
                  url = "http://dx.doi.org/10.1134/S0001433809040070",
                label = "lattes: 0638551133292550 3 MartinsGuarPere:2008:ApEnE{\'o}",
             language = "en",
           targetfile = "Tarasova.pdf",
        urlaccessdate = "19 abr. 2024"
}