Questions tagged [ozone]

An allotrope of oxygen with the general formula $\rm{O_3}$. The ozone layer in the atmosphere plays an essential part to protect Earth from the ultraviolet radiation of the Sun.

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Why is the ozone layer in the northern hemisphere at lower altitudes than in the southern hemisphere?

Per this image shown below, the largest concentration of the ozone layer above the northern hemisphere is at a lower altitude than the largest concentration above the southern hemisphere. However, ...
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If there was no ozone layer, would the temperature decrease all the way from sea level to the mesopause?

The temperature increase with altitude in the stratosphere is caused by the UV radiation absorbed in the ozone layer, isn't it? What if there was no ozone layer? Would temperature keep decreasing ...
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What layers of the atmosphere are divided in this image by abrupt borders?

In the image of Earth from a 100,000 ft on this site you can see abruptly divided layers of the atmosphere in different shades of blue. What are they, why do they have different shades and why can't ...
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What role does the hydrosphere play in tectonic plate convection?

I need to do a "how do different 'Earth's spheres' interact with each other" and I'm trying to figure out how the hydrosphere would affect the lithosphere if the ozone layer were to ...
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Is there still a hole in the ozone layer?

In the 90's, there was a hole in the ozone layer as big as Antarctica. After the Montreal protocol was created, harmful CFCs were no longer emitted and the ozone layer problem subsided. I was just ...
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Are the polar vortexes main cause of ozone hole?

I read some articles and news from various sources that the Arctic ozone hole has recovered. Some people claim that less emission of harmful gases due to covid-19 made this happen. AFAIK, the past few ...
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Why is ozone layer so important when oxygen atoms absorb UV Rays?

Oxygen molecules absorb UV Rays and are converted to elemental oxygen atoms. These elemental oxygen atoms combine with molecular oxygen to go give ozone . When there is so much oxygen present in ...
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Can humanity help reinforce the ozone layer?

The ozone layer has been weakened by humans over the last century, but is slowly recovering. Can humanity help undo the damage faster by manufacturing and releasing ozone? Would it be enough to ...
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How does the ozone layer "stay in place"?

It is said about ozone: a layer in the earth's stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone Over the Earth’s surface, the ozone layer’s average ...
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Can Ozone (O$_3$) form in a vacuum and if so can it deflect solar radiation

I am working on a geoengineering/space infrastructure project and part of that includes the possibility of using oxygen mined from the moon (specifically lunar regolith) to cause ballistic objects to ...
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How large were CFC emissions per year before the Montreal Protocol came into practice?

This article The China CFC dilemma states CFC emissions now might be 67,000 tonnes per year. I tried to look for how large were the emissions of it before the Montreal Protocol but I couldnt find it. ...
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Can planes damage the ozone layer?

So I heard that the Ozone Layer is a layer of gas in Earth's atmosphere. And I also heard once that the Ozone Layer is crucial in protecting life on Earth, as it blocks out harmful rays emitted by the ...
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Ozone Layer Problem

I am only 14 so please don't criticize me too harshly. From what I have understood from my teachers is that our ozone layer helps deflect harmful Ultra Violet Rays and that currently our ozone layer ...
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Stratosphere height vs. Temperature based on ozone concentration

Why does temperature increase as height increases in the stratosphere (15 km - 60 km above earth), when the ozone molecules are most concentrated at about 25 km?
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Would there have been a stratosphere in the Archean before the Great Oxygenation Event?

In today's world the presence of ozone in the stratosphere is the reason for the stratospheric temperature inversion which keeps a lid on the troposphere. But before the Great Oxygenation Event there ...
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Ozone layer and radiation absorption

The ozone layer if compressed to a minimum on the earth's surface can absorb infrared radiation. How is it possible that the same molecule can absorb radiation of two different wavelength with ...
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Why is the sky blue? Due to the ozone layer or due to ''light scatterization in atmosphere''? [closed]

I've found several answers to the question of why the sky is blue. Basically the title. Elaborate however you want...
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Why is ozone a greenhouse gas if it absorb UV radiation?

Ozone is considered a greenhouse gas, even though it absorbs shortwave (UV) radiation from the Sun, which does not fit with the definition for greenhouse gases, where they are supposed to: "absorbs ...
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How do I convert kg·kg⁻¹ to ppbV (parts per billion volume)?

I am using the CAMS model output data to figure out the ground level ozone at a particular place. It is given in mass mixing ratio, and I want to convert to parts per billion volume mixing ratio (...
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Do hurricanes cool the earth?

I noticed that temperature drops in the surrounding area of a hurricane. Is the heat converted into kinetic energy? Could the shape of the hurricanes reflect sunlight? Do they create more lightning ...
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How to handle negative cosine of Solar Zenith Angle while calculating clear-sky UV Index?

I'm using this source to calculate the UVI value for every hour in a day (From 7am to 7pm). And using pysolar module to get the Solar Zenith Angle. The equation is ...
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Is there a conceptual diurnal model for ozone profile?

So i know that there are diurnal patterns for virtual potential temperature that can be described conceptually (such as $\frac{\partial \theta_v}{\partial z}\approx 0$ in the mixed layer and $\frac{\...
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Are greenhouse effect and ozone depletion correlated?

I have read that these phenomena do not have an interaction. However, I would think if CFCs cause the ozone layer to thin, and more UV radiation enters the Earth system, the Greenhouse Effect would ...
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Is Ozone Layer a Valid Concern

I’ve had a simple puzzlement concerning the ozone layer. Succinctly, the troposphere is largely and preferably ozone free. When it thermally rises at the tropics to become the stratosphere molecular ...
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gamma ray burst, extinction-level event

From this subsection in Wikipedia's aricle on extinction event: A nearby gamma-ray burst (less than 6000 light years away) would be powerful enough to destroy the Earth's ozone layer, leaving ...
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Persistence time of ozone

Ozone is formed in the upper atmosphere by ultraviolet light, and broken down by ultraviolet, spontaneous reactions and artificial pollutants among other things. Suppose there were no artificial ...
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How can ice crystals with adsorbed chlorine remain over the south pole all winter?

I just saw the Periodic Video Ozone on Bondi Beach - Periodic Table of Videos where the impact of Chlorine from CFCs on Ozone is discussed. At around 04:00 or so, ...
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What is the impact of climate change on tropospheric ozone production and vice versa?

I know ground ozone reduce the photosynthesis rate of vegetation and could lead to increase respiration and hence more CO2 in the atmosphere, contributing to global warming. But what is the opposite? ...
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What geographical areas are NOx sensitive/limited (with regard to ozone)?

Have there been any air quality modeling studies regarding the locations where ozone is considered "NOx limited" (increasing NOx increases ozone) or "NOx sensitive" (decreasing NOx increases ozone)? ...
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Does the Antarctic Ozone Hole affect the rest of the world?

Sometimes you read about skin cancer and the ozone hole in Australia. But when you look it up the ozone hole is basically just near the South Pole, and maybe a bit above the North Pole (because that’s ...
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6 votes
2 answers
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How to understand the bizarre high level for both PM2.5 and Ozone

Background Eastern China now (2017.01) are suffering severe haze with striking concentration of PM2.5. Haze, with low visibility and complex chemical components threatens billions of persons' health. ...
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Correlation analysis with primary air pollutants and secondary formed ozone

The Ph.D dissertation Assessment of air quality in Northern China by using the COSMO-ART model in conjunction with satellite and ground-based data which was written by Stefanie Schrader in KIT German....
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Ground level ozone formation and NO2 dependence over time

I have a dataset which contains daily NO2 and ozone levels of the 50 largest cities in Spain for one year (so 50 x 365 observations). The data are retrieved from http://www.eea.europa.eu/data-and-maps/...
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Which crops are especially sensitive to atmospheric ozone?

In this National Park Service article, the effects of ozone on trees is discussed: Ozone enters plants through leaf openings called stomata and oxidizes plant tissue, causing changes in biochemical ...
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How is a UV Index calculated?

I have three parameters for a particular location, namely: Ozone:- A numerical value representing the columnar density of total atmospheric ozone at the given time in Dobson units Elevation: The ...
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Why do maps of melanoma prevalence correlate negatively with UV index, negatively with ground ozone, and positively with atmospheric ozone levels? [closed]

What is the causal link behind the correlation of melanoma: negatively with UV index, negatively with ozone in the lower atmosphere, and positively with ozone in the upper atmosphere? Intuitively, ...
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Is the difference in 'Summer tanning' in the Southern Hemisphere related to the Ozone hole or are there other factors?

Many people have observed that people 'tan faster' in the Southern Hemisphere, compared to equivalent latitudes in Europe. Some Australians even say the sun is 'less bright' on a European beach. Now ...
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Why is the Ozone Layer 'hole' more pronounced in the Southern Hemisphere?

Lots of people comment that you have to use more sunscreen in Australia compared to European countries due to the hole in the ozone layer. (Even for roughly equivalent latitudes). What would cause ...
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What ozone depleting chemicals can salt produce?

According to How Long Will Life Last On Earth, 250 million years ago Siberia underwent a large a prolonged period of volcanic activity. It has been speculated that large salt deposits that existed in ...
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Has a reduction in car use ever had an effect on the ozone layer?

Has there ever been an incident in the U.S. where because of high gas prices people have driven their cars a lot less than usual for, say, many months, and after appropriate measurements it was ...
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What are the causes of lower UV radiation at lower elevations?

After recently visiting the Dead Sea in Israel and not getting any skin burns, I was wondering about the reasons for that. Searching the literature, it seems that the UV radiation is indeed lower in ...
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Is ground level ozone dangerous to human health when other pollutants are not present, for example, at high altitudes?

In mountainous areas there is often little or no air pollution such as particulate matter, sulphur/nitrogen dioxide etc. However, ground-level ozone is frequently more present at these higher ...
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13 votes
3 answers
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Ozone gas (O₃) endurance in the atmosphere

If I release some ozone gas (O3) to the atmosphere, for how much time will it stay there in its original form? Does it change to some other form by reacting with other atmospheric constituents?
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