Questions tagged [ozone]

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13
votes
3answers
621 views

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?
13
votes
5answers
4k views

How to reduce the atmospheric temperature artificially?

Is there any gas/substance which absorbs/reduces atmospheric temperature? Ozone filters UV rays from the sun light and allows in infrared rays. In my knowledge these infrared rays are the cause of ...
13
votes
3answers
4k views

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 ...
12
votes
4answers
4k views

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 ...
9
votes
1answer
599 views

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 ...
8
votes
1answer
433 views

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 ...
7
votes
1answer
155 views

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 ...
7
votes
1answer
331 views

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 ...
6
votes
2answers
196 views

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. ...
6
votes
2answers
3k views

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 ...
5
votes
1answer
1k views

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 ...
5
votes
2answers
1k views

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 ...
5
votes
2answers
171 views

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 ...
5
votes
1answer
251 views

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 ...
5
votes
0answers
43 views

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, ...
4
votes
1answer
4k views

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 ...
4
votes
1answer
493 views

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 ...
4
votes
1answer
137 views

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 ...
4
votes
0answers
41 views

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 ...
3
votes
0answers
80 views

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)? ...
3
votes
0answers
88 views

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....
2
votes
2answers
858 views

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 (...
2
votes
1answer
102 views

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?
2
votes
1answer
127 views

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? ...
2
votes
1answer
18 views

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 ...
2
votes
0answers
25 views

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{\...
1
vote
2answers
1k views

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, ...
1
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1answer
110 views

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 ...
1
vote
1answer
363 views

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 ...
1
vote
1answer
41 views

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 ...
1
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1answer
110 views

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/...
1
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0answers
153 views

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...
1
vote
1answer
184 views

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 ...