An overview of the ozone layer depletion in canada

Ozone is formed in the stratosphere when oxygen molecules photodissociate after intaking ultraviolet photons.

An overview of the ozone layer depletion in canada

To understand ozone layer, it would be helpful to know the different layers of the atmosphere. A lot of human activities such as gas balloons, mountain climbing, and small aircraft flights take place within this region. The stratosphere is the next layer above the troposphere stretching approximately 15 to 60 kilometers.

Causes of Ozone Layer Depletion

The ozone layer sits in the lower region of the stratosphere from about kilometers above the surface of the earth. The thickness of the ozone layer is about 3 to 5 mm, but it pretty much fluctuates depending on the season and geography.

This lower region of stratosphere containing relatively higher concentration of ozone is called Ozonosphere. The Ozonosphere is found km 9 to 22 miles above the surface of the earth. The concentration of ozone in the ozone layer is usually under 10 parts per million while the average concentration of ozone in the atmosphere is about 0.

The thickness of the ozone layer differs as per season and geography. The highest concentrations of ozone occur at altitudes from 26 to 28 km 16 to 17 miles in the tropics and from 12 to 20 km 7 to 12 miles towards the poles.

The ozone layer forms a thick layer in stratosphere, encircling the earth, that has large amount of ozone in it. The ozone layer protects life on earth from strong ultraviolet radiation that comes from the sun.

Ultraviolet rays are harmful rays that can drive up the risk of deadly disorders like skin cancer, cataracts and damage the immune system. Ultraviolet rays are also capable of destroying single cell organism, terrestrial plant life, and aquatic ecosystems. Composition of the Ozone Layer It comes as a surprise that the same UV rays form the bulk of ozone layer.

Ozone is an extraordinary kind of oxygen composed of 3 oxygen atoms instead of the normal 2 oxygen atoms. Ozone layer normally develops when a few kinds of electrical discharge or radiation splits the 2 atoms in an oxygen O2 molecule, which then independently reunite with other types of molecules to form ozone.

People began to value the importance of the ozone layer when scientists released a research finding suggesting that certain human-made chemicals known as chlorofluorocarbons managed to reach the stratosphere and depleted the ozone via a profound series of chemical reactions.

An overview of the ozone layer depletion in canada

The results of this research study prompted the signing of a global treaty known as the Montreal Protocol in This treaty helped in the reduction of the production of these harmful human-made chemicals. These targeted efforts have seen the ozone layer recovering over the past years.

The thickness of the ozone layer varies immensely on any day and location. Due to relentless vertical atmospheric air circulation in both the stratosphere and troposphere, the amount of ozone layer shielding humans from strong UV rays can be lesser or greater.

In addition, those residing in higher elevations are at risk of UV radiation than those at lower elevations. The Stratospheric ozone plays a big role in protecting humans from the harshness of the sun.

However, there is also a kind of ozone developed just above the ground as a result of sun rays coming into contact with pollution in the atmospherewhich is hazardous to human health.

Composition of the Ozone Layer

In some individuals, it can lead to complications in breathing and often takes place during summer when pollution is rampant in cities where the air is static.

Why Ozone Layer is Necessary? In this process, it also absorbs ultraviolet radiations that are dangerous for most living beings. UV radiation could injure or kill life on Earth.

Though the absorption of UV radiations warms the stratosphere but it is important for life to flourish on planet Earth.

Research scientists have anticipated disruption of susceptible terrestrial and aquatic ecosystems due to depletion of ozone layer.

Ultraviolet radiation could destroy the organic matter. Plants and plankton cannot thrive, both acts as food for land and sea animals, respectively.

For humans, excessive exposure to ultraviolet radiation leads to higher risks of cancer especially skin cancer and cataracts. It is calculated that every 1 percent decrease in ozone layer results in a percent increase in the occurrence of skin cancer. Other ill-effects of the reduction of protective ozone layer include — increase in the incidence of cataracts, sunburns and suppression of the immune system.

Causes of Ozone Layer Depletion Credible scientific studies have substantiated that the cause of ozone layer depletion is human activity, specifically, human-made chemicals that contain chlorine or bromine. It is found to be more prominent in Polar Regions. Ozone-Depleting Substances have been proven to be eco-friendlyvery stable and non-toxic in the atmosphere below.Although ozone depletion has been a global issue, there is significant differences in distribution of ozone layer depletion across the world.

Overall, ozone depletion increases with latitude with low levels of depletion at the equator and tropics, and highest depletion at the poles. An Overview of Ozone Depletion in the Stratosphere by scientist and author Rod Jenkins FOREWORD: This is a tutorial and teacher's guide for classroom studies in both high schools and colleges.

Overview. Ozone-depleting substances (ODS) generally contain chlorine, fluorine, bromine, Except for a few HCFCs already in use in Canada Depletion of the Ozone Layer and its Impacts.

Ozone Layer; Ozone Depletion; Health & Environmental Effects;. The ozone layer forms a thin shield in the upper atmosphere protecting life on earth from UV rays. Ozone is a naturally occurring gas that is found in two layers of the atmosphere. Ozone is a naturally occurring gas that is found in two layers of the atmosphere.

Climate Ozone Depletion Today, there is widespread concern that the ozone layer is deteriorating due to the release of pollution containing the chemicals chlorine and bromine.

Climate Ozone Depletion Today, there is widespread concern that the ozone layer is deteriorating due to the release of pollution containing the chemicals chlorine and bromine.

Depletion of the ozone layer: causes, status and recovery - lausannecongress2018.com