These gases, through several chemical reactions, cause the ozone molecules to break down, reducing ozone's ultraviolet (UV) radiation-absorbing capacity.
These gases, through several chemical reactions, cause the ozone molecules to break down, reducing ozone's ultraviolet (UV) radiation-absorbing capacity. Because our atmosphere is one connected system, it is not surprising that ozone depletion and global warming are related in other ways. For example, evidence suggests that climate change may contribute to thinning of the protective ozone layer. Figure 1. Seasonal thinning of the ozone layer above Antarctica The ozone layer is a concentration of ozone molecules in the stratosphere. About 90% of the planet's ozone is in the ozone layer. The layer of the Earth's atmosphere that surrounds us is called the troposphere. The stratosphere, the next higher layer, extends about 10-50 kilometers above the Earth's surface. Good Ozone. Good ozone occurs naturally in the upper atmosphere, 6 to 30 miles above the Earth's surface, where it forms a protective layer that shields us from the sun's harmful ultraviolet rays. This beneficial ozone is gradually being destroyed by manmade chemicals. Where is ozone found in the atmosphere? Ozone is mainly found in two regions of the Earth's atmosphere. Most ozone (about 90%) resides in a layer that begins between 6 and 10 miles (10 and 17 kilometers) above the Earth's surface and extends up to about 30 miles (50 kilometers). This region of the atmosphere is called the stratosphere. The ozone in this region is commonly known as the ozone layer. The remaining ozone is in the lower region of the atmosphere, which is commonly called the troposphere. The figure (above) shows an example of how ozone is distributed in the atmosphere. Ozone is very rare in our atmosphere, averaging about three molecules of ozone for every 10 million air molecules. In spite of this small amount, ozone plays a vital role in the atmosphere. In the information below, we present the basics about this important component of the Earth's atmosphere. The ozone layer or ozone shield refers to a region of Earth's stratosphere that absorbs most of the Sun 's ultraviolet (UV) radiation. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 20 to 30 kilometres (12 to 19 mi) above Earth, though the thickness varies seasonally and geographically. The ozone layer is a concentration of ozone molecules in the stratosphere. About 90% of the planet's ozone is in the ozone layer. The layer of the Earth's atmosphere that surrounds us is called the troposphere. The stratosphere, the next higher layer, extends about 10–50 kilometers above the Earth's surface. Stratospheric ozone is a naturally occurring gas that filters the sun's ultraviolet (UV) radiation. Most atmospheric ozone is concentrated in a layer in the stratosphere, about 15–30 kilometers above the Earth's surface. Ozone is a molecule containing three oxygen atoms. It is blue in color and has a strong odor. Normal oxygen, which we breathe, has two oxygen atoms and is colorless and odorless. Making the world better, one answer at a time. The Ozone Layer, which is made up of Ozone molecules, or O3 molecules, occurs in the stratosphere. The stratosphere is the second layer up from the surface, above the troposphere, which we live in. (Sorry...long drawn out answer.) :). Short Answer: The ozone layer protects the DNA of all surface dwelling life, by absorbing UltraViolet-B from our Sun. More detail The ozone layer is the product of very shor … t wave Ultraviolet light (UV-B) breaking apart oxygen molecules.
http://www.ucsusa.org/global_warming/science_and_impacts/science/ozone-hole-and-gw-faq.html http://ehso.com/ehshome/OzoneDepletionFAQs.htm http://www.ozonelayer.noaa.gov/science/basics.htm https://en.wikipedia.org/wiki/Ozone_layer http://www.factmonster.com/ipka/A0800624.html http://www.answers.com/Q/In_which_layer_does_the_ozone_layer_occur
what layer of the atmosphere does ozone depletion occur