Solar ultraviolet irradiance characterization under all sky conditions in Burgos, Spain

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Date
2022Author
Version
Acceso abierto / Sarbide irekia
Type
Artículo / Artikulua
Version
Versión publicada / Argitaratu den bertsioa
Impact
|
10.3390/app122010407
Abstract
Solar Ultraviolet Radiation (UVR), which is identified as a major environmental health hazard, is responsible for a variety of photochemical reactions with direct effects on urban and aquatic ecosystems, human health, plant growth, and the deterioration of industrial systems. Ground measurements of total solar UVR are scarce, with low spatial and temporal coverage around the world, which is mainl ...
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Solar Ultraviolet Radiation (UVR), which is identified as a major environmental health hazard, is responsible for a variety of photochemical reactions with direct effects on urban and aquatic ecosystems, human health, plant growth, and the deterioration of industrial systems. Ground measurements of total solar UVR are scarce, with low spatial and temporal coverage around the world, which is mainly due to measurement equipment maintenance costs and the complexities of equipment calibration routines; however, models designed to estimate ultraviolet rays from global radiation measurements are frequently used alternatives. In an experimental campaign in Burgos, Spain, between September 2020 and June 2022, average values of the ratio between horizontal global ultraviolet irradiance (GHUV) and global horizontal irradiance (GHI) were determined, based on measurements at ten-minute intervals. Sky cloudiness was the most influential factor in the ratio, more so than any daily, monthly, or seasonal pattern. Both the CIE standard sky classification and the clearness index were used to characterize the cloudiness conditions of homogeneous skies. Overcast sky types presented the highest values of the ratio, whereas the clear sky categories presented the lowest and most dispersed values, regardless of the criteria used for sky classification. The main conclusion, for practical purposes, was that the ratio between GHUV and GHI can be used to model GHUV. [--]
Subject
UV,
Global irradiance,
Sky conditions,
CIE standard sky classification,
KT,
Statistical analysis
Publisher
MDPI
Published in
Applied Sicences 2022, 12, 10407
Departament
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC /
Universidad Pública de Navarra. Departamento de Ingeniería /
Nafarroako Unibertsitate Publikoa. Nafarroako Unibertsitate Publikoa. Ingeniaritza Saila Saila
Publisher version
Sponsorship
This research was funded by the Spanish Ministry of Science and Innovation, grant numbers
RTI2018-098900-B-I00 and TED2021-131563B-I00, and Junta de Castilla y León, grant numbers
INVESTUN/19/BU/0004 and INVESTUN/22/BU/0001. Ignacio Garcia thanks the Spanish Ministry of Universities and the European
Union-Next Generation EU for their financial support (program for the requalification of the Spanish
university system 2021-2023, Resolution 14 February 2021).