Frontiers in Solar UV Radiation Observations, Prediction, and Personal Exposure

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Biosphere/Hydrosphere/Land–Atmosphere Interactions".

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 6224

Special Issue Editor


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Guest Editor
Geographical Institute ”Jovan Cvijić“ SASA, Belgrade 11000, Serbia
Interests: UV radiation; climate change; air pollution

Special Issue Information

Dear Colleagues,

Solar radiation is essential for life on Earth, but its UV component is known to have adverse effects on the biosphere including terrestrial and aquatic ecosystems as well as public health. Considerable attention has been paid to solar UV radiation in the last two decades of the 20th century, when significant increase was observed due to damage to the stratospheric ozone layer, along with an increase in the number of cases of skin cancer. Recognition of ozone depletion led to the establishment of the Montreal Protocol, while its implementation has remarkably limited the production of ozone-depleting substances.  Mitigation activities over the past 34 years have contributed to the successful reduction in ozone layer depletion and the associated increase in terrestrial UV radiation.

However, despite the success of the Montreal Protocol and ozone stabilization, UV radiation levels are still high. Many studies related to stations in southern, eastern, and central Europe report positive trends in UV radiation, while those related to stations with greater latitude report a decrease in UV radiation. These facts reveal that our understanding of the links between UV radiation, ozone, and climate change is incomplete, and point to the importance of understanding the factors affecting solar UV radiation, as well as, accurate UV measurements, and prediction.

This Special Issue aims to compile a set of papers that empirically and theoretically shift the understanding of the topic of solar UV radiation observations, prediction, and personal exposure.

Topics of interest for the Special Issue include but are not limited to:

  • Measurements of ground-based solar UV radiation and total ozone column;
  • Satellite monitoring of solar UV radiation and total ozone column;
  • Modeling solar UV radiation;
  • Factors affecting solar UV radiation;
  • Long-term and short term solar UV radiation variability;
  • The future evolution of the solar UV radiation and ozone layer;
  • Measurements of personal UV exposure.

Dr. Slavica Malinovic-Milicevic
Guest Editor

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Keywords

  • solar UV radiation
  • UV index
  • UV dose
  • total ozone column
  • UV radiation measurement
  • UV radiation modelling
  • solar UV radiation variability
  • factors affecting Solar UV radiation
  • erythemal UV exposure
  • UV instruments and techniques

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Published Papers (3 papers)

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16 pages, 4865 KiB  
Article
Kolmogorov Complexity Analysis and Prediction Horizon of the Daily Erythemal Dose Time Series
by Slavica Malinović-Milićević, Anja Mihailović and Dragutin T. Mihailović
Atmosphere 2022, 13(5), 746; https://doi.org/10.3390/atmos13050746 - 6 May 2022
Cited by 2 | Viewed by 1643
Abstract
Influenced by stratospheric total ozone column (TOC), cloud cover, aerosols, albedo, and other factors, levels of daily erythemal dose (Her) in a specific geographic region show significant variability in time and space. To investigate the degree of randomness and [...] Read more.
Influenced by stratospheric total ozone column (TOC), cloud cover, aerosols, albedo, and other factors, levels of daily erythemal dose (Her) in a specific geographic region show significant variability in time and space. To investigate the degree of randomness and predictability of Her time series from ground-based observations in Novi Sad, Serbia, during the 2003–2012 time period, we used a set of information measures: Kolmogorov complexity, Kolmogorov complexity spectrum, running Kolmogorov complexity, the largest Lyapunov exponent, Lyapunov time, and Kolmogorov time. The result reveals that fluctuations in daily Her are moderately random and exhibit low levels of chaotic behavior. We found a larger number of occurrences of deviation from the mean in the time series during the years with lower values of Her (2007–2009, 2011–2012), which explains the higher complexity. Our analysis indicated that the time series of daily values of Her show a tendency to increase the randomness when the randomness of cloud cover and TOC increases, which affects the short-term predictability. The prediction horizon of daily Her values in Novi Sad given by the Lyapunov time corrected for randomness by Kolmogorov is between 1.5 and 3.5 days. Full article
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14 pages, 2969 KiB  
Technical Note
Dependence of the Index of Biologically Active Ultraviolet Radiation on the Season and Time of Day
by Rumiana Bojilova, Plamen Mukhtarov and Nikolay Miloshev
Atmosphere 2022, 13(9), 1455; https://doi.org/10.3390/atmos13091455 - 8 Sep 2022
Cited by 2 | Viewed by 1635
Abstract
In the present work, the data from the monitoring of the biologically active ultraviolet (UV) radiation of the Sun at the National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences for the period 2007–2021 were used. Based on the data analysis, [...] Read more.
In the present work, the data from the monitoring of the biologically active ultraviolet (UV) radiation of the Sun at the National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences for the period 2007–2021 were used. Based on the data analysis, a statistical method is proposed for determining the UV radiation index values in clear weather. As a result, estimated values of the UV-Index for each day of the year and for each hour are obtained, which can be used for predicting when reporting the cloud forecast. In the present paper, the applicability of the theoretical dependence of the UV-Index on the square of the cosine of the zenith angle of the Sun is investigated. The seasonal dependence of UV-Index values at fixed zenith angles of the Sun is discussed. Through regression analysis, the influence of the Total Ozone Column (TOC) and the concentration of particulate matter with d < 10 μm (PM10) on the UV-Index in the conditions of the city of Sofia was investigated. Explanations of the obtained results are offered. Full article
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5 pages, 224 KiB  
Commentary
Prevention of Health Risks Related to Occupational Solar Ultraviolet Radiation Exposure in Times of Climate Change and COVID-19 Pandemic
by Alberto Modenese
Atmosphere 2022, 13(7), 1147; https://doi.org/10.3390/atmos13071147 - 20 Jul 2022
Cited by 3 | Viewed by 2026
Abstract
Occupational exposure to solar ultraviolet (UV) radiation is a recognized work-related risk, as is associated with the induction of long-term adverse health effects such as Non-Melanoma Skin Cancers and cataracts. Recent research provided new data suggesting an increased risk of specific forms of [...] Read more.
Occupational exposure to solar ultraviolet (UV) radiation is a recognized work-related risk, as is associated with the induction of long-term adverse health effects such as Non-Melanoma Skin Cancers and cataracts. Recent research provided new data suggesting an increased risk of specific forms of malignant melanoma, i.e., Lentigo Maligna Melanoma, for outdoor workers, while the relation of cumulative exposure to solar radiation with ocular diseases, such as uveal melanoma and macular degeneration, is still debated. Nowadays, one of the main focuses of prevention activities is the organization of multicomponent sun safety initiatives, which are proved to be effective, particularly when including technologies that are able to directly interact with individuals, such as phone apps, such as the recently released SunSmart Global UV App. Nevertheless, we should not forget that we are living in an era of profound changes, and phenomena such as climate change and the COVID-19 pandemic have an impact on all aspects of our lives, including how and when we perform, as well as the perception of, outdoor activities. In the future, this may result in possible changes in the scenario of occupational and leisure-time solar radiation exposure-related health risks. Full article
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