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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 15, issue 1 | Copyright
Atmos. Chem. Phys., 15, 375-391, 2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 13 Jan 2015

Research article | 13 Jan 2015

Erythemal ultraviolet irradiation trends in the Iberian Peninsula from 1950 to 2011

R. Román, J. Bilbao, and A. de Miguel R. Román et al.
  • University of Valladolid, Laboratorio de Atmósfera y Energía, Department of Applied Physics, Valladolid, Spain

Abstract. Erythemal ultraviolet (UVER) irradiation was reconstructed at nine Spanish locations, with series starting around 1950 in five of these places. Each series was checked by applying homogeneity tests in order to discard non-homogeneous series. Available series were used to create an averaged Iberian Peninsula UVER series. Results indicate that annual UVER irradiation in the Iberian Peninsula increased by 155 Jm−2 (6.5%) between 1950 and 2011 due to the decrease observed in atmospheric ozone rather than changes in aerosol and clouds. By contrast, annual UVER irradiation increased by 135 Jm−2 (5.6%) between 1985 and 2011, mainly due to changes in aerosol and clouds.

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Short summary
This paper develops two models for the reconstruction of ultraviolet erythemal radiation (UVER). The models are based on shortwave radiation (SW) and sunshine duration measurements. Both models are used to reconstruct UVER irradiation at nine Spanish places from 1950 to 2011. The trends of UVER are calculated at different periods. UVER presented a brightening phenomenon, but not dimming, due to the ozone depletion until the mid-1990s.
This paper develops two models for the reconstruction of ultraviolet erythemal radiation (UVER)....