25 votes

Is there still a hole in the ozone layer?

Some countries are still illegally using banned chlorofluorocarbons (CFCs). "In 2018, high levels of banned chlorofluorocarbons were detected in the atmosphere that were eventually traced to ...
Fred's user avatar
  • 24.7k
21 votes
Accepted

Is there still a hole in the ozone layer?

Why is there still a hole in the ozone layer? To some extent, there most likely will always be an area over Antarctica with reduced stratospheric ozone content in late Southern Hemisphere winter. (I ...
David Hammen's user avatar
  • 23.6k
16 votes
Accepted

How does the ozone layer "stay in place"?

For the ozone layer to dissolve, it would need something to bind to. Chloroflurocarbons are one very notable thing that it can bind to, but that doesn't exactly answer the question. While the ozone ...
BarocliniCplusplus's user avatar
12 votes
Accepted

Do hurricanes cool the earth?

Hurricanes can be viewed as having primary and secondary circulations. The primary circulation is what we see in satellite photos, comprising the winds and clouds that circle the low pressure zone at ...
David Hammen's user avatar
  • 23.6k
8 votes

Can Ozone (O$_3$) form in a vacuum and if so can it deflect solar radiation

If this would work, would $O_3$ free-floating in very loose clouds in space help deflect solar radiation at all? No, for many reasons: Your cloud will disperse. That's what gases do in vacuum. And ...
David Hammen's user avatar
  • 23.6k
7 votes
Accepted

How do I convert kg·kg⁻¹ to ppbV (parts per billion volume)?

So if you have a mass-mixing ratio, you effectively $\frac{ \text{kg pollutant}}{\text{kg dry air}}$. PPBV is parts per billion volume, or number of molecules of pollutant per billion molecules of dry ...
BarocliniCplusplus's user avatar
7 votes

Do hurricanes cool the earth?

To summarize David's great answer for folks perhaps looking for an answer more approachable to a wider audience: the answer is a thorough yes to the main question. Hurricanes do have a cooling impact. ...
JeopardyTempest's user avatar
6 votes

Can Ozone (O$_3$) form in a vacuum and if so can it deflect solar radiation

How exactly are you planning to mine the lunar regolith for oxygen? The oxygen is chemically bonded to metallic cations and it is very energy intensive to extract as molecular oxygen. You might as ...
Gimelist's user avatar
  • 23.1k
6 votes

How to understand the bizarre high level for both PM2.5 and Ozone

I think it is important to keep in mind the mechanisms that form PM$_{2.5}$ are different than the mechanisms that form O$_3$. From the data your provided you can draw some simple conclusions: ...
BarocliniCplusplus's user avatar
6 votes

Which crops are especially sensitive to atmospheric ozone?

I could find a relatively recent review by Mills et al. (2007) that lists sensitivity to ozone for several crops. Among the most sensitive were (table 1) Watermelons (albeit with very few data points ...
Christoph's user avatar
  • 994
5 votes
Accepted

Persistence time of ozone

Let's first consider the scenario in the absence of free radicals that can act as catalysts of $O_3$ destruction. In such scenario, added to the absence of UV radiation, the photolysis of ozone ($O_3 +...
Camilo Rada's user avatar
  • 17.7k
4 votes

How to understand the bizarre high level for both PM2.5 and Ozone

Ozone is most closely correlated to temperature. Yes you need NOx and VOCs to create ozone, but you also need enough photolysis driven by sunlight in order for ozone to form. The day analyzed in the ...
f.thorpe's user avatar
  • 13.6k
4 votes

Why is ozone a greenhouse gas if it absorb UV radiation?

Ozone is indeed a greenhouse gas. But not due to its capacity to absorb/scatter UV radiation, but instead due to its capacity to absorb infrared radiation. In contrast with other greenhouse gases (...
Camilo Rada's user avatar
  • 17.7k
4 votes

How does the ozone layer "stay in place"?

Above accepted answer provide very good explanation to the question. I did some research on it and found some reasons why Ozone layer stays there instead somewhere else. TL;DR : Higher the altitude, ...
Salitha's user avatar
  • 263
3 votes
Accepted

Why is ozone a greenhouse gas if it absorb UV radiation?

Tropospheric (near the surface) ozone is a powerful greenhouse gas, even in trace amounts. Strataspheric ozone or the ozone layer is opaque to UV rays coming in and it's opaque to IR rays going out ...
userLTK's user avatar
  • 5,857
3 votes
Accepted

Are the polar vortexes main cause of ozone hole?

To blame ozone destruction on the polar vortex would be like blaming trees for surface ozone production downwind of cities. Yes, nature is involved in the process, but nature is not the source of the ...
f.thorpe's user avatar
  • 13.6k
3 votes
Accepted

Stratosphere height vs. Temperature based on ozone concentration

There are two main points to make here. The first point is that UV radiation is entering the stratosphere from above (ignoring angular dependencies and scattering), so is preferentially absorbed by ...
Deditos's user avatar
  • 3,950
3 votes
Accepted

gamma ray burst, extinction-level event

As bon noted in the comments, that it the time it would take the gamma rays to reach Earth. Gamme rays travel at the same speed as all other forms of electromagnetic radiation, including visible light,...
Gimelist's user avatar
  • 23.1k
2 votes

Are greenhouse effect and ozone depletion correlated?

Ozone protects us by absorbing ultraviolet radiation As shown in this Chemistry.SE answer, ozone breaks upon incidence of various energies of UV radiation to form oxygen, which itself is somewhat ...
kingledion's user avatar
  • 3,376
2 votes
Accepted

What is the impact of climate change on tropospheric ozone production and vice versa?

Since ozone is a greenhouse gas, I would say it would enhance warming. This article explains how regional climate may be impacted by ozone This article says that while global ozone should decrease ...
BarocliniCplusplus's user avatar
2 votes

Does the Antarctic Ozone Hole affect the rest of the world?

The ozone hole size changes according to the season. It is usually larger in winter because cold temperature Why is the Ozone Layer 'hole' more pronounced in the Southern Hemisphere? And in ...
Felix Leung's user avatar
2 votes

Ozone layer and radiation absorption

Ozone can indeed absorb UV and infrared radiation. The UV part, plays an important role in protecting us from harmful radiation, and the infrared part makes it an effective greenhouse gas. All gases ...
Camilo Rada's user avatar
  • 17.7k
2 votes

How to handle negative cosine of Solar Zenith Angle while calculating clear-sky UV Index?

This is only to address the title question. You are right, in a way. I would recommend that you set an if statement up such that ...
BarocliniCplusplus's user avatar
2 votes

Why is ozone layer so important when oxygen atoms absorb UV Rays?

Why is ozone layer so important when oxygen atoms absorb UV Rays? The cross section of ozone to UV radiation is many, many orders of magnitude higher than is the cross section of $\text O_2$ to UV ...
David Hammen's user avatar
  • 23.6k
2 votes

Can humanity help reinforce the ozone layer?

Would it be enough to simply vent ozone at point of manufacture, or would it be better released at the 10 km height? Neither. The right answer is not to do it at all. Surface level ozone is deemed to ...
David Hammen's user avatar
  • 23.6k
1 vote

What role does the hydrosphere play in tectonic plate convection?

Lubrication. Not to mention hydrothermal vents which feat ecosystems that at the depth do not depend on sunlight
LazyReader's user avatar
1 vote

Can planes damage the ozone layer?

There is no such thing as a mantle of O3 in the atmosphere, it is more prudent to call it ozonosphere. Ozone is produced by electrical discharges, you can relate to its smell if you leave an ...
Biology Blogger's user avatar
1 vote

Ozone Layer Problem

The problem of CFCs damaging the ozone layer was recognised many years ago in advanced western countries, and they were soon banned and replaced with other more environment friendly gases. There was ...
Michael Walsby's user avatar
1 vote

Do hurricanes cool the earth?

I believe that tropical storms contributes a little to cooling the earth by transporting warmer matter higher into the atmosphere where there is less of a greenhouse effect. By this I mean there is ...
Andrea Mica's user avatar
1 vote

Are greenhouse effect and ozone depletion correlated?

Ozone absorbs nearly all incoming solar radiation at wavelengths less than .25 microns (and in so doing, protects us from skin cancer), but also absorbs in the infrared / terrestrial wavelengths. And ...
rchuso's user avatar
  • 151

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