Ozone Layer as a Shield:
What helps us to live on this planet from the Ultraviolet ray of sun. ??? Then your answer be Ozone Layer.
Ozone is for the most part found in two areas of the Earth's air. Most ozone (about 90%) dwells in a layer that starts somewhere in the range of 6 and 10 miles (10 and 17 kilometres) over the Earth's surface and reaches out up to around 30 miles (50 kilometres). This locale of the environment is known as the stratosphere. The ozone in this area is usually known as the ozone layer. The rest of the ozone is in the lower locale of the climate, which is usually called the troposphere. The figure (above) shows a case of how ozone is circulated in the environment.
The stratosphere is the second major layer in the atmosphere, which is present in between 10-50kilometer from our surface. it is the region where our commercial airlines travel. Ozone Layer is present in this layer. It acts as a shield because it absorbs the UV from sunlight. The main fact is that there are only about three molecules for every 10million molecule of air.
What is UV (ultraviolet):
It is electromagnetic radiation with consisting wavelength 10 nanometers to 400 nanometers. Generally, 10% of sunlight is consisting of UV rays.
- UVA or UltraViolet A ray is more harmful than UV B. It causes skin cancer and melanoma. It radiates with peak intensity between 10 am to 4 pm.
- UV B or Ultraviolet B ray causes sunburns and cancer like basal cell carcinoma and squamous cell carcinoma.
There are mainly three types of Ultraviolet rays. UVA UV B and UV C.
UV C or UltraViolet Cray is most dangerous than UV B and UV A As it can not reaches at the surface so it is not a serious problem for us.
Now it is a serious problem because of Ozone holes. Through the Ozone holes, U V rays can easily pass. Ozone gas can absorb 98% of UV light.
There are some ozone-depleting substance like chlorofluorocarbon, Hydrochlorofluorocarbon, which is generally used as Refrigerant and plastic.
How ozone deflection happening?
Ozone consists of three molecules of oxygen atom and CFCs consist of one carbon atom and two chlorine atoms and two fluorine atoms.
One molecule of chlorine atom reacts with one molecule of oxygen atom to form chlorine monoxide as a result ozone breaks down and the oxygen atom is formed.
Now it is the time to take perfect action about this. We have to decrease the amount of pollution to make a perfect healthy earth.
The double job of ozone prompts two separate natural issues. There is worry about increments in ozone in the troposphere. Close surface ozone is a key part of photochemical "exhaust cloud," a natural issue in the air of numerous urban communities around the globe. Higher measures of surface-level ozone are progressively being seen in provincial zones also.
There is likewise across the board logical and open intrigue and worry about misfortunes of ozone in the stratosphere. Ground-based and satellite instruments have estimated diminishes in the measure of stratospheric ozone in our environment. Over certain pieces of Antarctica, up to 60% of the all-out overhead measure of ozone (known as the segment ozone) is drained during Antarctic spring (September-November). This wonder is known as the Antarctic ozone gap. In the Arctic polar locales, comparative procedures happen that have likewise prompted huge concoction consumption of the segment ozone during pre-spring and spring in 7 out of the most recent 11 years. The ozone misfortune from January through late March has been commonly 20-25%, and shorter-period misfortunes have been higher, contingent upon the meteorological conditions experienced in the Arctic stratosphere. Littler, yet at the same time noteworthy, stratospheric diminishes have been seen at other, more populated areas of the Earth. Increments in surface UV-B radiation have been seen in relationship with nearby abatements in stratospheric ozone, from both ground-based and satellite-borne instruments.
The Ozone Layer has as of late given early indications of recovery. Be that as it may, full recuperation of stratospheric ozone fixations to chronicled levels is anticipated to take a lot more decades.
In the outlines, we profile memorable levels and future projections of recuperation in two structures: proportionate stratospheric chlorine (for example ODS) focuses, and stratospheric ozone fixations through to 2100. This is estimated as the worldwide normal, just as fixations Antarctic and Arctic zones. Note that such projections are given as the middle lines from a scope of science atmosphere; genuine demonstrated outcomes introduced in the Montreal Protocol Scientific Assessment Panel (2014) report present the full scope of displayed gauges, with striking certainty intervals.6
The information introduced is estimated comparative with focuses in 1960 (where 1960 is equivalent to 0). ODS can have a huge life in the air, for some somewhere in the range of 50 and 100 years by and large. This implies in spite of decreases in ODS outflows (and in the long-run total eliminate of these substances), comparable stratospheric chlorine (ESC) fixations are required to stay higher than 1960 levels all the way to the finish of the century. In any case, it's normal that they topped in the mid-2000s and will keep on gradually decrease all through this period.
There is likewise across the board logical and open intrigue and worry about misfortunes of ozone in the stratosphere. Ground-based and satellite instruments have estimated diminishes in the measure of stratospheric ozone in our environment. Over certain pieces of Antarctica, up to 60% of the all-out overhead measure of ozone (known as the segment ozone) is drained during Antarctic spring (September-November). This wonder is known as the Antarctic ozone gap. In the Arctic polar locales, comparative procedures happen that have likewise prompted huge concoction consumption of the segment ozone during pre-spring and spring in 7 out of the most recent 11 years. The ozone misfortune from January through late March has been commonly 20-25%, and shorter-period misfortunes have been higher, contingent upon the meteorological conditions experienced in the Arctic stratosphere. Littler, yet at the same time noteworthy, stratospheric diminishes have been seen at other, more populated areas of the Earth. Increments in surface UV-B radiation have been seen in relationship with nearby abatements in stratospheric ozone, from both ground-based and satellite-borne instruments.
The Ozone Layer has as of late given early indications of recovery. Be that as it may, full recuperation of stratospheric ozone fixations to chronicled levels is anticipated to take a lot more decades.
In the outlines, we profile memorable levels and future projections of recuperation in two structures: proportionate stratospheric chlorine (for example ODS) focuses, and stratospheric ozone fixations through to 2100. This is estimated as the worldwide normal, just as fixations Antarctic and Arctic zones. Note that such projections are given as the middle lines from a scope of science atmosphere; genuine demonstrated outcomes introduced in the Montreal Protocol Scientific Assessment Panel (2014) report present the full scope of displayed gauges, with striking certainty intervals.6
The information introduced is estimated comparative with focuses in 1960 (where 1960 is equivalent to 0). ODS can have a huge life in the air, for some somewhere in the range of 50 and 100 years by and large. This implies in spite of decreases in ODS outflows (and in the long-run total eliminate of these substances), comparable stratospheric chlorine (ESC) fixations are required to stay higher than 1960 levels all the way to the finish of the century. In any case, it's normal that they topped in the mid-2000s and will keep on gradually decrease all through this period.
This is a serious problem for us. We have to take care of our earth. Thanks for visiting my blog.
