Anatomical exposure patterns of skin to sunlight: relative contributions of direct, diffuse and reflected ultraviolet radiation
Détails
![Ressource 1](https://serval.unil.ch/static/img/forbidden.png)
Accès restreint UNIL
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_F584D9DEE2D9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Anatomical exposure patterns of skin to sunlight: relative contributions of direct, diffuse and reflected ultraviolet radiation
Périodique
British Journal of Dermatology
ISSN
1365-2133 (Electronic)
ISSN-L
0007-0963
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
167
Numéro
2
Pages
383-390
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
Summary Background The dose-response between ultraviolet (UV) exposure patterns and skin cancer occurrence is not fully understood. Sun-protection messages often focus on acute exposure, implicitly assuming that direct UV radiation is the key contributor to the overall UV exposure. However, little is known about the relative contribution of the direct, diffuse and reflected radiation components. Objective To investigate solar UV exposure patterns at different body sites with respect to the relative contribution of the direct, diffuse and reflected radiation. Methods A three-dimensional numerical model was used to assess exposure doses for various body parts and exposure scenarios of a standing individual (static and dynamic postures). The model was fed with erythemally weighted ground irradiance data for the year 2009 in Payerne, Switzerland. A year-round daily exposure (08:00-17:00 h) without protection was assumed. Results For most anatomical sites, mean daily doses were high (typically 6·2-14·6 standard erythemal doses) and exceeded the recommended exposure values. Direct exposure was important during specific periods (e.g. midday during summer), but contributed moderately to the annual dose, ranging from 15% to 24% for vertical and horizontal body parts, respectively. Diffuse irradiation explained about 80% of the cumulative annual exposure dose. Acute diffuse exposures were also observed during cloudy summer days. Conclusions The importance of diffuse UV radiation should not be underestimated when advocating preventive measures. Messages focused on avoiding acute direct exposures may be of limited efficiency to prevent skin cancers associated with chronic exposure.
Mots-clé
Ultraviolet Rays , Sunlight , Environmental Exposure/analysis , Skin/radiation effects , Dose-Response Relationship, Radiation , Radiation Dosage , Seasons , Weather
Pubmed
Web of science
Création de la notice
24/02/2012 17:23
Dernière modification de la notice
20/08/2019 17:22