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The signal of aerosol-induced changes in sunshine duration records: A review of the evidence
Sánchez Romero, Alejandro; Sánchez Lorenzo, Arturo; Calbó Angrill, Josep; González Gutiérrez, Josep Abel; Azorin-Molina, Cesar
Aerosols play a significant yet complex and central role in the Earth's radiation budget, and knowledge of long-term changes in the atmospheric turbidity induced by aerosols is therefore fundamental for a better understanding of climate change. However, there is little available information on changes in aerosol concentration in the atmosphere, especially prior to the 1980s. The present paper reviews publications reporting the suitability of sunshine duration records with regard to detecting changes in atmospheric aerosols. Some of the studies reviewed propose methods for estimating aerosol-related magnitudes, such as turbidity, from sunshine deficit at approximately sunrise and sunset, when the impact of aerosols on the solar beam is more easily observed. In addition, there is abundant evidence that one cause of the decadal changes observed in sunshine duration records involves variations in atmospheric aerosol loading. Possible directions for future research are also suggested: in particular, detailed studies of the burn (not only its length but also its width) registered by means of Campbell-Stokes sunshine recorders may provide a way of creating time series of atmospheric aerosol loading metrics dating back to over 120years from the present
This research was supported by the Spanish Ministry of Science and Innovation project NUCLIERSOL (CGL2010-18546). The first author received a grant from the FPU program (FPU AP2010-0917) of the Spanish Ministry of Education. The second author was supported by a postdoctoral fellowship from the "Secretaria per a Universitats i Recerca del Departament d'Economia i Coneixement, de la Generalitat de Catalunya i del programa Cofund de les Accions Marie Curie del 7e Programa marc d'R + D de la Unio Europea" (2011 BP-B 00078). The fifth author was given a grant by the " Juan de la Cierva" program (JCI-2011-10263) of the Spanish Ministry of Science and Innovation
Aerosols
Canvis climàtics
Climatic changes
Radiació solar
Solar radiation
Tots els drets reservats
Artículo
info:eu-repo/semantics/publishedVersion
American Geophysical Union (AGU)
         

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