Ozone depletion and climate change: impacts on UV radiation

2011 ◽  
Vol 10 (2) ◽  
pp. 182 ◽  
Author(s):  
R. L. McKenzie ◽  
P. J. Aucamp ◽  
A. F. Bais ◽  
L. O. Björn ◽  
M. Ilyas ◽  
...  
2015 ◽  
Vol 14 (1) ◽  
pp. 19-52 ◽  
Author(s):  
A. F. Bais ◽  
R. L. McKenzie ◽  
G. Bernhard ◽  
P. J. Aucamp ◽  
M. Ilyas ◽  
...  

Percentage changes in the UV Index (UVI) for 2090 relative to 2015 due to changes in ozone (left) and aerosols (right) only. Large decreases are projected over Antarctica due to stratospheric ozone recovery. Increases are projected for parts of Asia due to decreases in aerosols, partly reversing the possible large reductions in UVI after the 1950s.


2004 ◽  
Vol 12 (1) ◽  
pp. 1-70 ◽  
Author(s):  
S Perin ◽  
D RS Lean

Depletion of stratospheric ozone, the principal atmospheric attenuator of ultraviolet-B (UVB) radiation, by man-made chemicals has raised scientific and public concern regarding the biological effects of increased UVB radiation on Earth. There is an increased awareness that existing levels of solar UV radiation have an important influence on biological and chemical processes in aquatic ecosystems. For aquatic organisms, numerous studies have shown direct detrimental effects of UVB radiation at each trophic level. Fortunately, many aquatic organisms also possess a range of photoprotective mechanisms against UV radiation toxicity. In addition to its direct impact, harmful effects of UVB radiation at a single-trophic level can cascade through the food web and indirectly affect organisms from other trophic levels. Because UV radiation photochemically reacts with humic substances and other photosensitive agents in the water, increases in solar UVB can also indirectly affect aquatic organisms through the production and (or) release of different photoproducts like biologically available nutrients and harmful reactive oxygen species. Polar aquatic ecosystems have been of particular concern, since stratospheric ozone-related UVB increases have been the greatest in these regions. With the influences of climate warming and the possibility of future volcanic eruptions, ozone losses are expected to get worse in the Arctic stratosphere, and the ozone layer recovery may not follow the slow decline of industrial ozone-depleting compounds in the atmosphere. Climate warming is also expected to bring important changes in underwater ultraviolet radiation (UVR) penetration in Arctic freshwaters that would be more significant to the aquatic biota than stratospheric ozone depletion.Key words: Arctic, UV radiation, UVB, ozone depletion, climate change, aquatic ecosystems.


2015 ◽  
Vol 14 (1) ◽  
pp. 127-148 ◽  
Author(s):  
David J. Erickson III ◽  
Barbara Sulzberger ◽  
Richard G. Zepp ◽  
Amy T. Austin

Solar UV radiation and climate change interact to influence and determine the environmental conditions for humans on planet Earth.


2020 ◽  
Author(s):  
Miguel Berdugo ◽  
Dinorah O. Mendoza-Aguilar ◽  
Ana Rey ◽  
Victoria Ochoa ◽  
Beatriz Gozalo ◽  
...  

AbstractDespite the high relevance of communities dominated by lichens, mosses and cyanobacteria living on the soil surface (biocrusts) for ecosystem functioning in drylands worldwide, no study to date has investigated the decomposition of biocrust-forming lichen litter in situ. Thus, we do not know whether the drivers of its decomposition are similar to those for plant litter (e.g., importance of abiotic degradation through UV radiation), the magnitude of lichen decomposition rates and whether they will be affected by climate change. Here we report results from a litter decomposition experiment carried out with two biocrust-forming lichens (Diploschistes diacapsis and Cladonia convoluta) in central Spain. We evaluated how lichen decomposition was affected by warming, rainfall exclusion and the combination of both. We also manipulated the incidence of UV radiation using mesh material that blocked 10% or 90% of incoming UV radiation. Our results indicate that lichens decompose as fast as some plants typical of the region (k~0.3) and that the chemical composition of their thallus drives litter decomposition rates. Warming increased decomposition rates of both lichen species, and mediated the effects of photodegradation. While UV exposure accelerated the decomposition of D. diacapsis, it slowed down that of C. convoluta. Our results indicate that biocrust-forming lichens can decompose in the field at a rate similar to that of vascular plants, and that this process will be affected by warming. Our findings further highlight the need of incorporating biocrusts into carbon cycling models to better understand and forecast climate change impacts on terrestrial biogeochemistry.


2015 ◽  
Vol 14 (1) ◽  
pp. 170-184 ◽  
Author(s):  
A. L. Andrady ◽  
A. Torikai ◽  
H. H. Redhwi ◽  
K. K. Pandey ◽  
P. Gies

Materials used in the exterior of buildings and in construction are routinely exposed to solar UV radiation. Especially in the case of wood and plastic building materials, the service life is determined by their weather-induced deterioration.


2020 ◽  
Vol 19 (5) ◽  
pp. 542-584 ◽  
Author(s):  
G. H. Bernhard ◽  
R. E. Neale ◽  
P. W. Barnes ◽  
P. J. Neale ◽  
R. G. Zepp ◽  
...  

This assessment provides an update of the interactive effects of solar ultraviolet (UV) radiation, stratospheric ozone, and climate change on human health, terrestrial and aquatic ecosystems, biochemical cycles, air quality, and material damage.


2019 ◽  
Vol 18 (3) ◽  
pp. 717-746 ◽  
Author(s):  
Craig E. Williamson ◽  
Patrick J. Neale ◽  
Samuel Hylander ◽  
Kevin C. Rose ◽  
Félix L. Figueroa ◽  
...  

Summary of current knowledge about effects of UV radiation in inland and oceanic waters related to stratospheric ozone depletion and climate change.


2018 ◽  
Vol 17 (2) ◽  
pp. 127-179 ◽  
Author(s):  
A. F. Bais ◽  
R. M. Lucas ◽  
J. F. Bornman ◽  
C. E. Williamson ◽  
B. Sulzberger ◽  
...  

The present 2017 Update Report assesses some of the highlights about the interactive nature of the direct and indirect effects of UV radiation, atmospheric processes, and climate change.


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