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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32734

Title: Adaptation of an empirical model for erythemal ultraviolet irradiance
Authors: Foyo-Moreno, I.
Alados-Arboledas, Inmaculada
Alados-Arboledas, Lucas
Issue Date: 2007
Abstract: In this work we adapt an empirical model to estimate ultraviolet erythemal irradiance (UVER) using experimental measurements carried out at seven stations in Spain during four years (2000–2003). The measurements were taken in the framework of the Spanish UVB radiometric network operated and maintained by the Spanish Meteorological Institute. The UVER observations are recorded as half hour average values. The model is valid for all-sky conditions, estimating UVER from the ozone columnar content and parameters usually registered in radiometric networks, such as global broadband hemispherical transmittance and optical air mass. One data set was used to develop the model and another independent set was used to validate it. The model provides satisfactory results, with low mean bias error (MBE) for all stations. In fact, MBEs are less than 4% and root mean square errors (RMSE) are below 18% (except for one location). The model has also been evaluated to estimate the UV index. The percentage of cases with differences of 0 UVI units is in the range of 61.1% to 72.0%, while the percentage of cases with differences of ±1 UVI unit covers the range of 95.6% to 99.2%. This result confirms the applicability of the model to estimate UVER irradiance and the UV index at those locations in the Iberian Peninsula where there are no UV radiation measurements.
Sponsorship: This work was supported by CICYT from the Spanish Ministry of Science and Technology through projects CIRRUS REN2003-03175 and PANDORA-CALIPSO CGL2004- 05984-C07-03, REN 2003- 03175 and Andalusian Regional Government project P06-RNM-01503. The “Instituto Nacional de Meteorología” kindly provided the radiometric and meteorological information for the stations used in this study.
Publisher: Copernicus Publications; European Geosciences Union (EGU)
Keywords: Atmospheric composition and structure (transmission and scattering of radiation)
Meteorology and atmospheric dynamics (radiative process)
URI: http://hdl.handle.net/10481/32734
ISSN: 0992-7689
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Foyo-Moreno, I.; Alados-Arboledas, I.; Alados-Arboledas, L. Adaptation of an empirical model for erythemal ultraviolet irradiance. Annales Geophysicae, 25(7): 1499-1508 (2007). [http://hdl.handle.net/10481/32734]
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