Enhancement of UV Radiation by Cloud Effect in NE of Brazil
Joint Authors
Tiba, Chigueru
Silva Leal, Sérgio da
Source
International Journal of Photoenergy
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-24
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
This paper reports a detailed analysis of ground-based measurements of cloud-enhanced global solar and UV radiation in NE Brazil in the city of Recife.
It was found that (a) the phenomenon of UV enhancement, above clear sky model, is not uncommon and that it occurs on at least eight months; (b) the cumulative duration can reach 13 minutes; (c) there is a clear seasonal effect, and the probability of occurrence on a monthly basis shows two peaks, one in March and another in October; and (d) the most extreme UV radiation was 70.4 W/m2, approximately 6 W/m2 higher than the clear sky UV radiation.
The extreme values should be taken into account in the study of effects related to the UV index and biological effects.
Two statistical models also were elaborated, to estimate the UV solar radiation, in which the first is for all sky conditions and the second exclusively for situations where the global solar radiation is equal to or higher than 1367 W/m2, resulting from the enhancement effect caused by a particular configuration of the clouds.
The statistical indicatives for both models presented, respectively, MBE% of 3.09 and 0.48% and RMSE% of 15.80 and 3.90%.
American Psychological Association (APA)
Tiba, Chigueru& Silva Leal, Sérgio da. 2017. Enhancement of UV Radiation by Cloud Effect in NE of Brazil. International Journal of Photoenergy،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1168461
Modern Language Association (MLA)
Tiba, Chigueru& Silva Leal, Sérgio da. Enhancement of UV Radiation by Cloud Effect in NE of Brazil. International Journal of Photoenergy No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1168461
American Medical Association (AMA)
Tiba, Chigueru& Silva Leal, Sérgio da. Enhancement of UV Radiation by Cloud Effect in NE of Brazil. International Journal of Photoenergy. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1168461
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168461