Possibilities to estimate the personal UV radiation exposure from ambient UV radiation measurements

Schmalwieser, Alois W.

doi:10.1039/d0pp00182a

Cited by 17 publications

(15 citation statements)

References 69 publications

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“…The value of GCF was~0.45 for different parts of the body considered (face and hands) for SZAs corresponding to the selected hypothetical period of exposure. This value stays in agreement with Schmalwieser [36], who showed that parts of the body, which are not horizontally oriented to the sun, receive 20-50% of ambient exposure. Ambient vitamin D 3 dose was estimated from the measured UVI (SM6.5) multiplied by the empirical erythema-vitamin D 3 conversion factor, which was taken from tabular values provided by Czerwińska and Krzyścin [37] and depends on SZA and TCO 3 .…”

Section: Model Estimates Of the Vitamin D 3 Intakesupporting

confidence: 91%

Estimations of the Erythemal UV Doses and the Amount of the Sun-Synthesized Vitamin D by Adults during the Cruise to Spitsbergen–Polar Measurement Campaign (2–21 July 2017)

Czerwińska

Czuchraj²

2021

Atmosphere

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UV index (UVI) measurements were carried out by the hand-held instrument Solarmeter 6.5 onboard of MS Horyzont II during the cruise from Poland (Gdynia) to Spitsbergen (and back) in the period from 2 to 21 July 2017. A method is proposed to estimate the erythemal doses and sun-synthesized amount of vitamin D from a limited number of daily UVI observations. This study shows that the erythema could appear in a person with Caucasian type of skin characterized by Minimum Erythema Dose (MED) ~250 J m−2 after ~1 h exposure near the polar circle and up to few hours in the Svalbard. During this time, it was possible to get the dose of vitamin D3 equivalent to ~1000 IU of oral intake. The protection against UV overexposure should be applied even if UVI values during the cruise in the Arctic were always below the World Meteorological Organization (WMO) warning threshold of 3. To provide adequate amount of vitamin D, the exposure should be continued until getting 1 MED, after which the vitamin supplementation (or a diet rich in vitamin D) is necessary.

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Section: Model Estimates Of the Vitamin D 3 Intakesupporting

confidence: 91%

Estimations of the Erythemal UV Doses and the Amount of the Sun-Synthesized Vitamin D by Adults during the Cruise to Spitsbergen–Polar Measurement Campaign (2–21 July 2017)

Czerwińska

Czuchraj²

2021

Atmosphere

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“…UVR dose (J/m 2 = W/m 2 × time (s)) received by viable skin is an important factor, and this depends on many biological (e.g., amount of melanin), behavioral (e.g., clothing and sunscreen cover) and environmental factors (e.g., latitude), all of which influence the exposure ratio to ambient (ERTA). This is also dependent on angle of the sun on the body site in question (e.g., horizonal vs. vertical surface) [ 1 ]. Different photobiological endpoints in the skin and eye have different UVR dose thresholds, spectral dependencies and exposure patterns in the case of chronic outcomes.…”

Section: Introductionmentioning

confidence: 99%

Insufficient Sun Exposure Has Become a Real Public Health Problem

Alfredsson

Armstrong

Butterfield

et al. 2020

IJERPH

108

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This article aims to alert the medical community and public health authorities to accumulating evidence on health benefits from sun exposure, which suggests that insufficient sun exposure is a significant public health problem. Studies in the past decade indicate that insufficient sun exposure may be responsible for 340,000 deaths in the United States and 480,000 deaths in Europe per year, and an increased incidence of breast cancer, colorectal cancer, hypertension, cardiovascular disease, metabolic syndrome, multiple sclerosis, Alzheimer’s disease, autism, asthma, type 1 diabetes and myopia. Vitamin D has long been considered the principal mediator of beneficial effects of sun exposure. However, oral vitamin D supplementation has not been convincingly shown to prevent the above conditions; thus, serum 25(OH)D as an indicator of vitamin D status may be a proxy for and not a mediator of beneficial effects of sun exposure. New candidate mechanisms include the release of nitric oxide from the skin and direct effects of ultraviolet radiation (UVR) on peripheral blood cells. Collectively, this evidence indicates it would be wise for people living outside the tropics to ensure they expose their skin sufficiently to the sun. To minimize the harms of excessive sun exposure, great care must be taken to avoid sunburn, and sun exposure during high ambient UVR seasons should be obtained incrementally at not more than 5–30 min a day (depending on skin type and UV index), in season-appropriate clothing and with eyes closed or protected by sunglasses that filter UVR.

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“…The surveys are used to determine average exposure times of selected population groups. Sometimes this information is used to infer the average UV exposure [17,18], but more commonly, the annual UV doses or annual averaged daily UV doses (indicative of chronic UV exposure) have been estimated by integrating ambient UV data over average exposure times [19]. (Sometimes daily doses are computed assuming complete exposure, representing the maximum possible dose [20].)…”

Section: Introductionmentioning

confidence: 99%

“…We build upon the work of survey-based approaches and the smartphone app developed by Morelli et al to ensure that our approach is suitable for use in a smartphone app, while also overcoming many of the limitations of previous works and still circumventing the shortcomings of per-sonal dosimeters. Unlike survey-based approaches, our technique is suitable for analysing both chronic and acute UV exposure and, by utilising ER modelling, our approach can be applied far more generally than that of Morelli et al Recent papers have discussed the core principles of estimating personal doses from ambient UV data and ERs and the promise this approach holds for the future of public health and epidemiology research related to UV exposure [19,34], but this is the first publication to calculate and validate doses using such an approach. Satellite-based personal UV dose estimation can serve as an accessible, low-cost method for accurately estimating UV exposure on a population level, thereby aiding epidemiology research into health outcomes related to UV exposure and public health efforts targeting overexposed or at-risk populations.…”

Section: Introductionmentioning

confidence: 99%

Satellite-Based Personal UV Dose Estimation

et al. 2021

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Epidemiology and public health research relating to solar ultraviolet (UV) exposure usually relies on dosimetry to measure UV doses received by individuals. However, measurement errors affect each dosimetry measurement by unknown amounts, complicating the analysis of such measurements and their relationship to the underlying population exposure and the associated health outcomes. This paper presents a new approach to estimate UV doses without the use of dosimeters. By combining new satellite-derived UV data to account for environmental factors and simulation-based exposure ratio (ER) modelling to account for individual factors, we are able to estimate doses for specific exposure periods. This is a significant step forward for alternative dosimetry techniques which have previously been limited to annual dose estimation. We compare our dose estimates with dosimeter measurements from skiers and builders in Switzerland. The dosimetry measurements are expected to be slightly below the true doses due to a variety of dosimeter-related measurement errors, mostly explaining why our estimates are greater than or equal to the corresponding dosimetry measurements. Our approach holds much promise as a low-cost way to either complement or substitute traditional dosimetry. It can be applied in a research context, but is also fundamentally well-suited to be used as the basis for a dose-estimating mobile app that does not require an external device.

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Possibilities to estimate the personal UV radiation exposure from ambient UV radiation measurements

Abstract: People are exposed to solar ultraviolet radiation (UVR) throughout their entire lives. Exposure to UVR is vital but also holds serious risks. The quantification of human UVR exposure is a...

Cited by 17 publications

References 69 publications

Estimations of the Erythemal UV Doses and the Amount of the Sun-Synthesized Vitamin D by Adults during the Cruise to Spitsbergen–Polar Measurement Campaign (2–21 July 2017)

Estimations of the Erythemal UV Doses and the Amount of the Sun-Synthesized Vitamin D by Adults during the Cruise to Spitsbergen–Polar Measurement Campaign (2–21 July 2017)

Insufficient Sun Exposure Has Become a Real Public Health Problem

Satellite-Based Personal UV Dose Estimation

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