Validation and stability assessment of the monthly mean CM SAF surface solar radiation dataset over Europe against a homogenized surface dataset (1983-2005)
dc.contributor.author
dc.date.accessioned
2016-01-25T07:57:53Z
dc.date.available
2016-01-25T07:57:53Z
dc.date.issued
2013
dc.identifier.issn
0034-4257
dc.identifier.uri
dc.description.abstract
This work presents a validation of the downwelling surface shortwave radiation, or surface solar radiation (SSR), derived from the Satellite Application Facility on Climate Monitoring (CM SAF) over Europe for a 23-year period of records on a monthly basis. This SSR product has been recently derived based on the visible channel of the Meteosat First Generation satellites, providing a dataset with a high spatial resolution (0.03°×0.03°) covering the 1983-2005 period. The CM SAF SSR product is compared against a homogeneous dataset of surface observations from the Global Energy Balance Archive (GEBA) over Europe, which has been homogenized by means of the Standard Normal Homogeneity Test (SNHT). The results show a good agreement between both datasets (r2=0.86, p<0.01), with a slight overestimation (bias of +5.20Wm-2) of the CM SAF records as compared to the surface observations on a monthly mean basis. Equally, there is a monthly mean absolute bias difference (MABD) of 8.19Wm-2 that is below the accuracy threshold defined by the CM SAF. There is a clear maximum and minimum MABD during summer and winter, respectively, with an opposite cycle if the relative MABD values are considered. Moreover, the temporal stability of the CM SAF SSR is checked against the GEBA stations for the mean time series over Europe, as well as for each individual series. The results point to possible inhomogeneities in the CM SAF records around 1987 and 1994, possibly due to changes in the satellite instruments, although other factors such as the lack of aerosol retrievals in the CM SAF SSR are also discussed. Consequently, the study of the means and trends in the SSR derived from CM SAF is only recommended for the records after 1994
dc.description.sponsorship
This work is partly funded by the Deutscher Wetterdienst (DWD). ASL was also supported by a postdoctoral fellowship from the "Comissionat per a Universitats i Recerca del Departament d'Innovacio, Universitats i Empresa de la Generalitat de Catalunya" (2009 BP-A 00035, 2011 BP-B 00078) and the project NUCLIERSOL (CGL2010-18546) funded by the Spanish Government. MW acknowledges funding from the Swiss National Science Foundation Grant No 135395
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.rse.2013.03.012
dc.relation.ispartof
© Remote Sensing of Environment, 2013, vol. 134, p. 355-366
dc.relation.ispartofseries
Articles publicats (D-F)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Validation and stability assessment of the monthly mean CM SAF surface solar radiation dataset over Europe against a homogenized surface dataset (1983-2005)
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.contributor.funder