15 votes

Has a reduction in car use ever had an effect on the ozone layer?

The sequence of events you describe has never happened, for several reasons. As Sabre Tooth mentions in the comments, vehicle emissions have a negligible effect on stratospheric ozone. (Note that ...
user avatar
  • 5,380
15 votes

What happens to global temperature when we stop all the vehicles for a year?

Not much at first. The damage has already been done. Humanity has added at least 100 gigatonnes of carbon to the atmosphere since the start of the industrial age. Natural sequestration of that excess ...
user avatar
  • 20.4k
13 votes
Accepted

What happens to global temperature when we stop all the vehicles for a year?

There are two factors to be aware of: First, cars (and all road vehicles) account for only a fraction of human CO2 output. Off-hand I've a feeling it is about a quarter or a third although I don't ...
user avatar
  • 3,843
12 votes
Accepted

What is a temperature inversion and can it trap smog/pollution?

Normally, temperature broadly decreases with altitude, and convection is effective: locally warmer air will rise, and cooler air will fall. A temperature inversion is where the air temperature rises ...
user avatar
12 votes
Accepted

What is Boomy McBoomFace?

The boom* is a cleanup prototype. From the OceanCleanup website: The Ocean Cleanup deployed a 100 meter-long barrier segment in the North Sea, 23 km off the coast of The Netherlands on the 22nd of ...
user avatar
  • 2,626
11 votes

Why is carbon pollution given more importance than Sulfur pollution or Nitrogen pollution?

greenhouse gases other than CO2 The gases N2O and CH4 are relevant greenhouse gases besides CO2. They even have a stronger warming impact per molecule. A brief summary for N2O is provided in its ...
user avatar
10 votes

How do current pollution levels in Los Angeles compare to the 1970s?

The air quality in Los Angeles does not meet federal air quality standards. That being said, the air quality has improved immensely since the 1970s. From the California Air Resource Board, in 1965 ...
user avatar
  • 12.7k
10 votes

Impact of Sugar on the environment

Sugar can be used as a weed killer, particularly broad leaf weeds, rather than grasses or perennials. It is a carbon nutrient that contains no nitrogen. Sugar can limit the growth of plant that do not ...
user avatar
  • 21.8k
8 votes
Accepted

How do current pollution levels in Los Angeles compare to the 1970s?

A figure downloaded from this site. It represent the history trends of the pollutants related to the photochemical pollution from 1960s to 2000s We can find that $O_3$, $PAN$, $VOCs$, $...
user avatar
  • 2,439
8 votes
Accepted

How can odor travel be tracked

The first problem to tackle is "what is an odor"? An odor is a chemical aerosol or gas, which are small molecules suspended in the atmosphere. To track the odors of pizza or burning wood you would ...
user avatar
  • 13.9k
8 votes

Will a country that cares for its environment be affected by climate change due to other countries' pollution?

The main driver for anthropogenic climate change is carbon dioxide because it is very long-lived and hence relatively evenly distributed within the atmosphere. And even if you'd somehow manage to keep ...
user avatar
  • 994
7 votes

What causes smog to clear up on some days?

My guess would be a combination of boundary layer, cloud cover, and emissions (though that isn't terribly specific). Smog is a combination of nitrogen oxides (which cause smog's brown color), ozone, ...
user avatar
  • 1,361
7 votes

If a specific mass of air is polluted, will the pollution stick with it?

Air is a fluid, as such it tends to mix and concentrations, of anything, tend to disperse into the wider volume. Erik's cup of tea metaphor is pretty accurate, currents of air will pull apart your ...
user avatar
  • 4,225
6 votes
Accepted

Regarding various types of atmospheric pollution

As a USA resident, the EPA is the best place to start when wondering about the emissions inventory of atmospheric pollutants or pollutant precursors that affect the National Ambient Air Quality ...
user avatar
  • 12.7k
6 votes
Accepted

What would happen if the same soil received waste water contaminants for a long time?

Like many things in Earth Science, the answer is, "It depends." In this case it depends on the composition of the soil and the contaminant you are talking about. Climate, particularly the amount of ...
user avatar
  • 4,319
6 votes

How can odor travel be tracked

Ofc what casey said is true, but I think the basic physics involved can be understood pretty easily by the mention of the advection-diffusion-equation: $\partial_t c = - \vec v \cdot \vec \nabla c + \...
user avatar
6 votes

What is a temperature inversion and can it trap smog/pollution?

As others have noted, a temperature inversion is a layer where temperature increases with height. This is called an inversion because the normal temperature profile decreases with height. A ...
user avatar
  • 13.9k
6 votes

What is Boomy McBoomFace?

Jan Doggen's answer identifies some sources that tell a bit more about Boomy itself, so I'd like to address overall what a boom actually is in this context, and make an educated guess about the ...
user avatar
  • 161
6 votes
Accepted

Do perfumes and deodorants contribute to global warming?

Maybe a little, but not much. Personal care products that have a strong odor are typically associated with volatile organic compound (VOC) emissions. VOCs are not really greenhouse gases, because ...
user avatar
  • 12.7k
6 votes
Accepted

Would home heat pumps provide large benefits against climate change?

The values on the DEFRA table with the column heading $ kg\ \ce{N2O} $ already include the global warming potential (GWP) factor of 298, as indicated by a note on the column heading (looking at ...
user avatar
  • 1,340
5 votes
Accepted

How can I test the Air Quality?

The AQI calculation does not require that all pollutants be measured. Instead, it uses the pollutants that are available and then uses a function (chosen by the overarching regulatory agency) that ...
user avatar
  • 12.7k
5 votes

Are there any high-resolution urban CO2 concentration data sets?

Are there papers or datasets of average CO2 concentrations down at ground level (say 0-20 metres upwards from the ground), in the spaces between buildings - streets, parks and so on? Yes, THE ...
user avatar
  • 5,912
5 votes

Will a country that cares for its environment be affected by climate change due to other countries' pollution?

If no-one does anything the result will be bad for everyone. If only a small number of countries (or global regions) do something and the rest of the planet does nothing the effect will be minimal or ...
user avatar
  • 21.8k
5 votes
Accepted

If a specific mass of air is polluted, will the pollution stick with it?

Like many of my answers on this Stack Exchange, the answer is yes and no. Part of it depends on the pollutant itself. Let's call the mass by it's technical term, a parcel. There are a couple things ...
user avatar
5 votes

Looking for study on the pollution of the forest

So far, I thought there won't be any studies on the overall scenario of waste disposals. After searching in depth, I have found studies on illegal waste dumping sites in Polish forests. Hope these ...
user avatar
4 votes

How bad is a "bad" oil spill?

Is there a clear guideline as to what exactly constitutes a bad oil spill? No, "bad" has no legal definition in any jurisdiction in North America. As a practical matter you can only establish ...
user avatar
  • 561
3 votes

How would pesticide vapor drift behave near a valley?

While @Gordon Stanger gave an overall perspective about pesticides in general in his answer you can deduce some key points about the micrometeorological conditions of the area. Assuming pesticides as ...
user avatar
  • 1,043
3 votes
Accepted

What kind of mine pit in northeastern Minnesota could make residue that turns water turn bright red?

From the red stain in the water & the rocks in the lower left of the picture it looks like iron ore. Also, the red stain in the water appears to be a colloidal suspension, consistent with minor ...
user avatar
  • 21.8k

Only top scored, non community-wiki answers of a minimum length are eligible