Global Warming And Ozone Layer Depletion |
that Deplete the Ozone Layer – dubbed “the world's most successful environmental When the sky is clear, there is an inverse relationship between the other high latitude locations due to the effects of the ozone hole. The measures taken to repair the damage will also have an important ozone layer, represent a rare instance of global environmental damage. Studying the effects of light intensity on egg quality, Renema et al. () Due to the importance of the environment on layer productivity, this study Eggshell percentage was calculated as the ratio between eggshell weight and egg weight.
It is important to note, however, that UV -B radiation has always had these effects on humans. In recent years these effects have become more prevalent because Canadians are spending more time in the sun and are exposing more of their skin in the process.
- The effects of forest canopy shading and turbulence on boundary layer ozone
- Ozone layer finally healing after damage caused by aerosols, UN says
- Ozone layer depletion: health and environmental effects
An increase in the levels of UV -B reaching the Earth as a result of ozone depletion may compound the effects that sun worshipping habits have already created. Effects on the skin Although fair-skinned, fair-haired individuals are at highest risk for skin cancer, the risk for all skin types increases with exposure to UV -B radiation. The effects of UV -B on the human immune system have been observed in people with all types of skin. There are three main types of skin cancer, basal cell carcinoma, squamous cell carcinoma, and malignant melanoma.
Most cases of skin cancer in Canada are either basal or squamous cell carcinoma. Basal and squamous cell carcinomas progress slowly and rarely cause death because they usually don't spread to other parts of the body.
Ozone layer depletion: health and environmental effects - guiadeayuntamientos.info
These cancers are easily removed by surgery. Melanoma is the most serious and fortunately the least common form of skin cancer. Scientists strongly suspect that malignant melanoma, which can be fatal, is caused by exposure to UV light. This could mean an additionalcases per year world wide. Preventing skin cancer Health Canada's It's Your Health page Effects on the eyes UV -B radiation can damage several parts of the eye, including the lens, the cornea, and the membrane covering the eye conjunctiva.
Snow blindness is not unlike a sunburn, and if repeated, can cause damage to eye over the long term. Cataracts are a clouding of the eye's lens and are the leading cause of permanent blindness world wide.
They are a result of overexposure to UV. Effects on the immune system UV affects our ability to fight disease.
The body's immune system is its first line of defense against invading germs. Recent research has shown that some viruses can be activated by increased exposure to UV. Effects on the environment Ultraviolet radiation not only affects humans, but wildlife as well. Excessive UV -B inhibits the growth processes of almost all green plants.Causes and Effects of Ozone Layer Depletion That are Truly Dangerous
There is concern that ozone depletion may lead to a loss of plant species and reduce global food supply. Any change in the balance of plant species can have serious effects, since all life is interconnected. Plants form the basis of the food web, prevent soil erosion and water loss, and are the primary producers of oxygen and a primary sink storage site for carbon dioxide.
UV -B causes cancer in domestic animals similar to those observed in humans. Although most animals have greater protection from UV -B because of their heavy coats and skin pigmentation, they cannot be artificially protected from UV -B on a large scale. Eyes and exposed parts of the body are most at risk. Keep sun exposure to a minimum, especially between the hours of Wear wide-brimmed hats, UV -B blocking sunglasses, and long-sleeved shirts and pants.
Australians are predominantly descended from fair-skinned individuals used to European conditions, so exposure to these high levels of solar UVR has resulted in very high rates of skin cancer within the population.
Generally the higher the sun is in the sky, the shorter the path through the atmosphere and the higher the solar UVR levels. The maximum height of the sun in the sky changes slowly from day to day, but ozone over a location can change considerably from one day to the next due to natural variability. Levels can rise or fall by up to Dobson Units DU in 24 hours.
For consecutive clear sky days, large but natural changes in ozone levels in the stratosphere above cities can affect the solar UVR at the surface significantly. The ozone hole - discovered in the early s - and its effects on solar UVR levels over the Antarctic and possibly further north could only add to the problem of population UVR exposures. The southern hemisphere has been affected more by ozone depletion than the northern hemisphere due to several geophysical and atmospheric factors which have lead to the annual appearance of the ozone hole over Antarctica.
Health and Environmental Effects of Ozone Layer Depletion
Measurements of the solar UVR levels at the Australian Stations in the Antarctic Casey, Davis and Mawson show as the ozone hole passes overhead each spring, the annual levels of solar UVR at the stations have increased significantly. They are now equivalent to that received at numerous places in Europe. Interestingly, Macquarie Island, which is outside the reach of the Antarctic ozone hole, shows little in the way of increased annual solar UVR levels.