UV Index experimental values on vertical surfaces

Utrillas, M. P.; Martínez‐Lozano, J. A.; Esteve, Anna R.; Serrano, D.; Marı́n, Marı́a José

doi:10.1002/joc.2423

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…To calculate the erythema effective irradiance on inclined surfaces, the isotropic model and anisotropic models of Schauberger, Gueymard, Muneer and Perez were chosen based on Yang's review of 26 models and validations of the models for inclined surfaces in Valencia, Spain, (39.5°N, 0.418°W) that showed good agreement with experimental data. Detailed description of these models could be found elsewhere.…”

Section: Methodsmentioning

confidence: 99%

Method for Measurements of Terrestrial Ultraviolet Radiation on Inclined Surfaces in Personal Dosimetry Field Studies

Corradi

Baczynska

Morelii

et al. 2019

Photochem & Photobiology

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Understanding personal ultraviolet radiation (UVR) exposure is essential for the evaluation of the health risks and benefits; however, personal dosimetry could be challenging in large‐scale or/and long‐term population studies. Alternatively, personal exposure could be simulated using three‐dimensional models and lifestyle surveys together with data on a body position with respect to the sun. These models require a real‐time input on local environmental UVR. The main challenge in using this method is retrieval of the diffuse irradiance as it requires an often‐expensive tracking of solar position. In this study, a hypothesis that UVR measured on a vertical plane in the north direction can be used in the UK as a proxy for diffuse radiation was tested against direct measurements and compared with models based on solar tracker data in Chilton, UK, (51.57°N) in June–July 2018. The statistical analysis over 17 days under all weather conditions showed that for 45° and 90° tilted surfaces the proposed method performed as well as the best of the models based on solar tracker data. A proposed system could offer a portable and low‐cost alternative to measurements of diffuse radiation by solar tracking radiometers for spatial distribution of terrestrial erythema effective UVR in population field studies.

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Section: Methodsmentioning

confidence: 99%

Method for Measurements of Terrestrial Ultraviolet Radiation on Inclined Surfaces in Personal Dosimetry Field Studies

Corradi

Baczynska

Morelii

et al. 2019

Photochem & Photobiology

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“…Minimum SZAs at that place may have reached about 45.5°. Measurements of erythemal irradiance incident on vertical planes at four azimuth directions performed at the southern European site Valencia (Spain) at a latitude of 39.5°N, where minimum noontime SZA at summer solstice reaches 16°( 39.5-23.5), showed values around 0.4 at high Sun in summer [Utrillas et al, 2012].…”

Section: Erythemal Exposure On Body Surfacesmentioning

confidence: 99%

Validation of modeled daily erythemal exposure along tropical and subtropical shipping routes by ship‐based and satellite‐based measurements

et al. 2015

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The Personal ERythemal EXposure (PEREX) model for seafarers working on decks of vessels has been developed to be used for retrospective estimates of personal occupational erythemal exposure in dependence of work profile, time period, and sea route. Extremely high UV index values up to 22 and daily erythemal exposure up to 89 standard erythemal dose have been derived from ship-based measurements in tropical oceans. Worldwide climatological maps of daily solar erythemal exposure derived from 10 year (2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013) hourly grid point radiative transfer model calculations for both cloudless sky and cloudy sky serve as the database of PEREX. The PEREX database is compared with ship-based measurements taken along four routes of merchant vessels, continuous UV radiation measurements taken on the research vessel Meteor on its mainly tropical and subtropical routes for 2 years, daily cloudless-sky erythemal exposure derived from 10 min LibRadtran radiative transfer model calculations, and 2 years of satellite-based erythemal exposure data of the Ozone Monitoring Instrument on the Aura satellite along the ship routes. Systematic differences between PEREX model data, ship-based data, and satellite-based daily erythemal exposure for all-sky conditions are only 1 to 3%, while short-term variations of cloudiness result in standard deviations of differences around 30%. Measured ratios between cloudless-sky erythemal radiation at vertical to horizontal incidence decrease with decreasing solar zenith angle, while clouds flatten their diurnal course.

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