Ann R. Webb
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View article: Vitamin D and SARS-CoV-2 virus/COVID-19 disease
Vitamin D and SARS-CoV-2 virus/COVID-19 disease Open
The spread of novel SARS-CoV-2 virus, and the disease COVID-19 that is caused by SARS-CoV-2, continues apace. Saving lives and slowing the worldwide pandemic remain of utmost importance to everyone: the public, healthcare professionals, sc…
View article: The Influence of Solar-Simulated UV Radiation on Circulating 25(OH)D3, 24,25(OH)2D3 and Their Ratio in Younger and Older Adults
The Influence of Solar-Simulated UV Radiation on Circulating 25(OH)D3, 24,25(OH)2D3 and Their Ratio in Younger and Older Adults Open
Background: In addition to the well-known vitamin D metabolites 25(OH)D and 1,25(OH)2D, the catabolite 24,25(OH)2D may also reflect vitamin D status and influence biological and skeletal processes. However, the effects of UVR-induced synth…
View article: Estimated health and economic effects associated with over- and under-exposure to solar ultraviolet radiation in Australia and New Zealand using the SUNEX simulation model
Estimated health and economic effects associated with over- and under-exposure to solar ultraviolet radiation in Australia and New Zealand using the SUNEX simulation model Open
Multiple health problems are associated with either over- or under-exposure to ultraviolet (UV) radiation. Using an agent-based microsimulation model, we examined the joint health and economic effects of conditions arising from over-exposu…
View article: Using Formvar to Capture Ice Crystals and Retrieve Roughness Parameters
Using Formvar to Capture Ice Crystals and Retrieve Roughness Parameters Open
Ice crystal roughness is a poorly observed and understood parameter, yet it significantly influences crystal’s scattering properties and consequently impacts radiative transfer in the atmosphere, contributing to uncertainties in weather an…
View article: Globally Estimated UVB Exposure Times Required to Maintain Sufficiency in Vitamin D Levels
Globally Estimated UVB Exposure Times Required to Maintain Sufficiency in Vitamin D Levels Open
A paucity of vitamin D is a common deficiency globally, with implications for many aspects of health besides the well-known impact on musculoskeletal health. The two sources of vitamin D are through oral intake, or through endogenous synth…
View article: Comparative Study of Healthy Older and Younger Adults Shows They Have the Same Skin Concentration of Vitamin D3 Precursor, 7-Dehydrocholesterol, and Similar Response to UVR
Comparative Study of Healthy Older and Younger Adults Shows They Have the Same Skin Concentration of Vitamin D3 Precursor, 7-Dehydrocholesterol, and Similar Response to UVR Open
Vitamin D3 synthesis in human skin is initiated by solar ultraviolet radiation (UVR) exposure of precursor 7-dehydrocholesterol (7DHC), but influence of age on the early stage of vitamin D3 metabolism is uncertain. We performed a prospecti…
View article: A coordinate transformation method for defining the geometries of ice crystal aggregates
A coordinate transformation method for defining the geometries of ice crystal aggregates Open
An algorithm created to generate complex-continuous chains of ice crystal, as observed in cirrus, is presented. This generation process begins with a single crystal generator module. This module can create individual crystals of varying sh…
View article: An Unprecedented Arctic Ozone Depletion Event During Spring 2020 and Its Impacts Across Europe
An Unprecedented Arctic Ozone Depletion Event During Spring 2020 and Its Impacts Across Europe Open
The response of the ozone column across Europe to the extreme 2020 Arctic ozone depletion was examined by analyzing ground‐based observations at 38 European stations. The ozone decrease at the northernmost site, Ny‐Ålesund (79°N) was about…
View article: Ultra-low Ultraviolet Radiation in Office Lighting Can Moderate Seasonal Vitamin D Cycle: A Pilot Study
Ultra-low Ultraviolet Radiation in Office Lighting Can Moderate Seasonal Vitamin D Cycle: A Pilot Study Open
The UV-B-modified lighting was well-tolerated and safe with weekly doses of UV-B of 0.5 - 0.9 Standard Erythema Dose [SED=100 Jm-2 erythema weighted UV radiation] measured at chest level. This ultra-low dosing was effective in reducing the…
View article: Forecasting solar photosynthetic photon flux density under cloud cover effects: novel predictive model using convolutional neural network integrated with long short-term memory network
Forecasting solar photosynthetic photon flux density under cloud cover effects: novel predictive model using convolutional neural network integrated with long short-term memory network Open
Forecast models of solar radiation incorporating cloud effects are useful tools to evaluate the impact of stochastic behaviour of cloud movement, real-time integration of photovoltaic energy in power grids, skin cancer and eye disease risk…
View article: Forecasting Photosynthetic Photon Flux Density Under Cloud Effects: Novel Predictive Model Using Convolutional Neural Network Integrated With Long Short-term Memory Network
Forecasting Photosynthetic Photon Flux Density Under Cloud Effects: Novel Predictive Model Using Convolutional Neural Network Integrated With Long Short-term Memory Network Open
Forecast models of solar radiation incorporating cloud effects are useful tools to evaluate the impact of stochastic behaviour of cloud movement, real-time integration of photovoltaic energy in power grids, skin cancer and eye disease risk…
View article: 100 YEARS OF VITAMIN D: Dose–response for change in 25-hydroxyvitamin D after UV exposure: outcome of a systematic review
100 YEARS OF VITAMIN D: Dose–response for change in 25-hydroxyvitamin D after UV exposure: outcome of a systematic review Open
A systematic review of publications addressing change in vitamin D status (25-hydroxyvitamin D (25OHD)) after exposure to UV radiation identified 2001 independent peer-reviewed publications. Of these, 21 used artificial sources of UV radia…
View article: Real-time UV index retrieval in Europe using Earth observation-based techniques: system description and quality assessment
Real-time UV index retrieval in Europe using Earth observation-based techniques: system description and quality assessment Open
This study introduces an Earth observation (EO)-based system which is capable of operationally estimating and continuously monitoring the ultraviolet index (UVI) in Europe. UVIOS (i.e., UV-Index Operating System) exploits a synergy of radi…
View article: Comment on amt-2020-506
Comment on amt-2020-506 Open
Abstract. This study introduces an Earth observation (EO)-based system which is capable of operationally estimating and continuously monitoring the ultraviolet index (UVI) in Europe. UVIOS (i.e., UV-Index Operating System) exploits a syner…
View article: Older Adults Who Spend More Time Outdoors in Summer and Have Higher Dietary Vitamin D Than Younger Adults Can Present at Least as High Vitamin D Status: A Pilot Study
Older Adults Who Spend More Time Outdoors in Summer and Have Higher Dietary Vitamin D Than Younger Adults Can Present at Least as High Vitamin D Status: A Pilot Study Open
Vitamin D3 can be produced by exposing skin to UVB radiation or sourced through dietary products. It is often stated that vitamin D status declines in older adults, yet little is known about differences in current-day lifestyle and dietary…
View article: Example periods for PMOD/WRC between UVIOS and ground based measurements by Brewer B163 and QASUME II
Example periods for PMOD/WRC between UVIOS and ground based measurements by Brewer B163 and QASUME II Open
Abstract. This study introduces an Earth observation (EO)-based system which is capable of operationally estimating and continuously monitoring the ultraviolet index (UVI) in Europe. UVIOS (i.e., UV-Index Operating System) exploits a syner…
View article: Real-time UV-Index retrieval in Europe using Earth Observation based techniques and validation against ground-based measurements
Real-time UV-Index retrieval in Europe using Earth Observation based techniques and validation against ground-based measurements Open
This study introduces an Earth observation (EO)-based system which is capable of operationally estimating and continuously monitoring the ultraviolet index (UVI) in Europe. The UVIOS (i.e. UV-Index Operating System) exploits a synergy of r…
View article: Public Awareness and Behaviour in Great Britain in the Context of Sunlight Exposure and Vitamin D: Results from the First Large-Scale and Representative Survey
Public Awareness and Behaviour in Great Britain in the Context of Sunlight Exposure and Vitamin D: Results from the First Large-Scale and Representative Survey Open
In recent years, UK public health messages about the risks of sunlight exposure (skin cancer) have been increasingly balanced by messages about its benefits (vitamin D production). Currently, data about the effects of this shift on public …
View article: Vitamin D and SARS-CoV-2 virus/COVID-19 disease
Vitamin D and SARS-CoV-2 virus/COVID-19 disease Open
The spread of novel SARS-CoV-2 virus, and the disease COVID-19 that is caused by SARS-CoV-2, continues apace. Saving lives and slowing the worldwide pandemic remain of utmost importance to everyone: the public, healthcare professionals, sc…
View article: A qualitative study of knowledge, behaviour and attitudes regarding vitamin D acquisition among patients with photosensitivity disorders
A qualitative study of knowledge, behaviour and attitudes regarding vitamin D acquisition among patients with photosensitivity disorders Open
Background Cutaneous exposure to sunlight is a major source of vitamin D. Individuals with photosensitivity disorders have symptoms provoked by sunlight and may not achieve the brief sunlight exposures that convey vitamin D acquisition. Ob…
View article: Solar UV Irradiance in a Changing Climate: Trends in Europe and the Significance of Spectral Monitoring in Italy
Solar UV Irradiance in a Changing Climate: Trends in Europe and the Significance of Spectral Monitoring in Italy Open
Review of the existing bibliography shows that the direction and magnitude of the long-term trends of UV irradiance, and their main drivers, vary significantly throughout Europe. Analysis of total ozone and spectral UV data recorded at fou…
View article: Solar UV Irradiance in a Changing Climate: Trends in Europe and the Significance of Spectral Monitoring in Italy
Solar UV Irradiance in a Changing Climate: Trends in Europe and the Significance of Spectral Monitoring in Italy Open
Review of the existing bibliography shows that the direction and magnitude of the long-term trends of UV irradiance, and their main drivers, vary significantly throughout Europe. Analysis of total ozone and spectral UV data recorded at fou…
View article: Sunlight exposure and vitamin D: Getting the balance right: sunlight exposure advice that ensures adequate vitamin D while minimising the risk of sunburn and cancer
Sunlight exposure and vitamin D: Getting the balance right: sunlight exposure advice that ensures adequate vitamin D while minimising the risk of sunburn and cancer Open
Sunlight is the body’s principal natural source of vitamin D, which protects bone and muscle health. Levels of vitamin D deficiency in the UK are high. University of Manchester research shows that, although public awareness of vitamin D is…
View article: Observations of organic and inorganic chlorinated compounds and their contribution to chlorine radical concentrations in an urban environment in northern Europe during the wintertime
Observations of organic and inorganic chlorinated compounds and their contribution to chlorine radical concentrations in an urban environment in northern Europe during the wintertime Open
A number of inorganic (nitryl chloride, ClNO2; chlorine, Cl2; and hypochlorous acid, HOCl) and chlorinated, oxygenated volatile organic compounds (ClOVOCs) have been measured in Manchester, UK during October and November 2014 using time-of…