why ozone layer is formed only in the stratoshere?

Answer 1

Because stratosphere has the right atmospheric conditions for formation of oxygen radical which interacts with a oxygen molecule to form ozone.This is like a chain reaction which is initiated and continued by UV rays.And that is why this layer absorbs most of the UV rays before reaching eatrhs atmosphere.

Answer 2

Ozone is created when the solar winds collide with the earth's magnetic field. This is true O3 not the NO2 that cars produce. The holes in the ozone layers occur at the poles,and cant harm anyone. It is better known as the Van Allen Belt. It is maintained by the current flow high in the atmosphere.

Answer 3

Ozone is an unstable compound that breaks down quite quickly.
In the upper reaches of the stratosphere, ozone is constantly created by the effects of UV light from the Sun. Before we started pumping out CFCs and the like, it was constantly being replenished as fast as it broke down.

At ground level there just aren't so many sources of ozone, and the air contains more chemicals (eg Nitrogen Oxide, a constituent of car exhausts) which react with ozone to break it down - so ground level concentrations tend to be lower, and localised pockets usually dissipate with a good stiff breeze.

Answer 4

I had to respond after reading the answer provided by "gvih2g2" whose car I'm sure has vanity plates....

You gotta love the "never give up" attitude of the self-styled "Green" crowd..... "Before we started pumping CFCs into the atmosphere...." Pullllllease. CFCs are banned. Do you know when they were banned? Last time the Bears went to the Superbowl, that's when. They take a long time to break down but they have - atmospheric CFC concentration is down over 20% - - - yet the "ozone hole" is WORSE. Not just taking a long time to recover, which could be easily explainable, but getting increasingly WORSE. The way the "experts" said it worked - a chemical combination between the CFCs and the O3 which broke up an O3 molecule (in which a CFC molecule is analogous to a bee's stinger in that it could knock out only one O3 molecule), this simply can't be happening. At the very least, if it is CFCs, it doesn't work the way we were told it worked when the CFC ban took place.

Now we're hearing from some corners that the cold stratosphere resulting from man-made global warming is causing a man-made 1-2 punch. There's no actual EVIDENCE of this - it's just bootstrapping - they have two "blame man" (and ultimately, blame America) theories which have serious problems and they're tying them together to try to make one good theory.

I'm not some "corporate big wig" nor do I work for an industrial company or chemical company or oil company or power plant. I care about the environment. I'm a libertarian - I care about people and about their freedom. I just think before you ban something, you should have your facts straight about the harm that what you're seeking to ban allegedly causes. "Corporations" are just forms of doing business, and behind those entities are people - investors (i.e., people's 401-K programs), employees, etc... When you ban something in commerce, you cause people to lose their jobs - most of them land on their feet but it's disruptive - - how would you like it if the government banned whatever your employer produces? Would you be OK with that being done without any proof, based on some allegations by people who never liked your industry to begin with, just because "it's better to be safe than sorry?" And at what point do these people lose their credibility entirely? Sometimes they're right on target - like with acid rain. Sometimes it turns out to be an urban myth - like the Monsanto butterflies. But acid rain was PROVEN - which means there's no reason not to require PROOF in every case, including the ozone hole, including man-made global warming....

I just think that before you ban something that it's someone's job to produce, you ought to have some tangible, direct proof that it causes the harm you allege. It may yet turn out that the ozone hole is a lot more complex problem than we were told and that CFCs may have been a bit player and not this global evil that we were led to believe - which would mean that thousands of people were put out of a job for no reason.

Answer 5

Ozone (O3) is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the diatomic species O2. It is present in low concentrations throughout the Earth's atmosphere. It has many industrial and consumer applications as well as being used in ozone therapy.

Ozone, the first allotrope of a chemical element to be described by science, was discovered by Christian Friedrich Schönbein in 1840, who named it after the Greek word for smell (ozein), from the peculiar odour in lightning storms.[1] The odour from a lightning strike is from ions produced during the rapid chemical changes, not the ozone itself.[

Answer 6

It is mostly formed (and remains) in the stratosphere because that is the region where a) enough oxygen still exists to fuel the reaction of 3O2 to 2O3, b) the necessary amount of solar radiation energy exists to drive the reaction, and c) the earth's gravity can hang on to it.