Wednesday, October 23, 2013

"The Ozone Hole." Data from U.S. Environmental Protection Agency. O.N.E.P.

"The Ozone Hole."
Data from U.S. Environmental Protection Agency.
The ozone layer is a layer of gas in the upper atmosphere which protects humans and other living things from the harmful ultraviolet (UV-B) rays of the sun. In the 1970´s scientists discovered that certain man-made chemicals could destroy ozone and deplete the ozone layer. Further research found that the growing production and use of chemicals like chlorofluorocarbons (CFCs) in aerosol sprays, refrigeration, insulation and air conditioning was contributing to the accumulation of ozone-depleting substances (ODS) in the atmosphere. They also observed that an "ozone hole" was developing above the ANTARCTIC.
A thinning ozone layer leads to a number of serious health risks for humans. It causes greater incidences of skin cancer and eye cataracts, with children being particularly vulnerable. There are also serious impacts for biodiversity. Increased UV-B rays reduce levels of plankton in the oceans and subsequently diminish fish stocks. It can also have adverse effects on plant growth, thus reducing agricultural productivity. A direct negative economic impact is the reduced lifespan of certain materials like plastic.
Severe depletion of the Antarctic ozone layer was first observed in the early 1980´s. The international response embodied in the Montreal Protocol. Today 196 parties worldwide have signed the Montreal Protocol which is widely regarded as the most successful Multinational Environmental Agreement, and it is the first treaty achieving universal ratification. Furthermore, the phasing out of ozone depleting substances (ODS) has helped to fight climate change since many ODS are also powerful greenhouse gases.
Ozone is a gas that occurs naturally in our atmosphere. Most of it is concentrated in the ozone layer, a region located in the stratosphere several miles above the surface of the Earth. Although ozone represents only a small fraction of the gas present in the atmosphere, it plays a vital role by shielding humans and other life from harmful ultraviolet light from the Sun. Human activities in the last several decades have produced chemicals, such as chlorofluorocarbons (CFCs), which have been released into atmosphere and have contributed to the depletion of this important protective layer. When scientists realized the destructive effect these chemicals could have on the ozone layer, international agreements were put in place to limit such emissions. As a result, it is expected that the ozone layer will recover in the coming decades.
Ozone is also a greenhouse gas in the upper atmosphere and, therefore, plays a role in Earth´s climate. The increases in primary greenhouse gases, such as carbon dioxide, may effect how the ozone layer recovers in coming years. Understanding precisely how ozone abundances will change in a future with diminished chlorofluorocarbon emissions and increased emissions of greenhouse gases remains an important challenge for atmospheric scientists in NOAA and other research centers.
Ozone depletion occurs in many places in the Earth´s ozone layer, most severely in the polar regions. NOAA scientists have traveled to Antarctica to study the ozone hole that has been occurring there since the late 1970s. In 1986, soon after the reported discovery of the ozone hole, Aeronomy Lab (now ESRL) scientist Dr. Susan Solomon led a team of 16 scientists, the National Ozone Expedition
(NOZE I) to Antarctica. The scientists took measurements of various trace gases and physical properties of the atmosphere. The data, along with additional findings from the NOZE II mission the following year, showed conclusively that human-produced trace gases that contain chlorine and bromine were causing the ozone hole. The Global Monitoring Division of ESRL has monitored the yearly Antarctic ozone hole since 1986 by using instruments located on the ground and by launching balloon-borne ozonesondes, onboard aircraft and satellites, from the South Pole station and measuring total column ozone from a ground based Dobson spectrophotometer since 1963. This unique record from the South Pole station clearly shows the annual development of the springtime Antarctic ozone hole over the past two decades.

Scientists are particularly interested in the North and South Pole because they are expected to show the most dramatic effects of global warming causing further ice melting.
ARCTIC ICE IS STILL MELTING, even though skeptical folks do not believe it.
Beautiful Polar Bears are endangered species in a way to extinction.
The North Pole Environmental Observatory has a shocking photo that it wants you to see. 
They call it, "Melting Polar Ice Cap Creates a Lake on Top of the World."
It is a fact that skyrocketing levels of heat-trapping carbon are being released in the atmosphere, causing less oxygen in the air flow. There are many apocalyptic graphic photos stored in satellite imagery on landscapes round the world, which won't escape the truth that is hidden to the public eye. Are you someone who cares about Our Natural Environment Protection? O.N.E.P.
Factory farming -apart from being a bloody practice- is taking its toll on our planet causing severe pollution in the environment among other things, and this is just one dramatic example out of many.
NOTE: I have been reading, researching data and getting acquainted with scientific facts. So, this brief shared information was gathered from the Agency Publication, in order to ALERT the public eye about this environmental problem. 
I hope you understand this writer points of view. I'm trying to help through WARNING.
Poet Starry Dawn.


Lisa @ Two Bears Farm said...

I find it so ridiculous that some people are in denial about this. :-(

Starry Dawn said...

Thank you, Lisa for caring to read about this important topic that is hurting our natural environment! Thanks for sharing your agreement on this issue!
I am so glad you are here.
Unfortunately, many people do not care, because it is not their problem at this point. Nevertheless, one day it will be a problem for everyone. Since I am an aging lady, it is more likely that I won't be around at the point of the planet's decay or doom. Anyway, I am worried for my grandchildren, for the little children worldwide, and the generations ahead of us.
I pray for God's intervention.