Questions tagged [air-pollution]
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why do expected local air pollution patterns not seem to show up on IQAir data?
I check IQAir quite frequently, but also earlier looked at other maps for air pollution data including soot and nitrogen dioxide. For the latter sources there are very clear local patterns based on ...
Is it true that nitrate radicals improve air quality during the night (and that is why light pollution, which destroys them, is bad)?
Is it true that nitrate radicals improve air quality during the night (and that is why light pollution, which destroys them, is bad)? I just came across this old presentation on light pollution from ...
Are EVs actually worse for ambient air quality than cars with combustion engines?
Most air pollution comes not from exhaust fumes but from wear and tear of tyres (it's 1000 times worse, some say). EVs are heavier because of their batteries and therefore release those tyre particles ...
For airlines that have "vowed to offer carbon-neutral flights" how do they say they plan to actually make some flights demonstrably carbon-neutral?
CNN's June 20, 2022 Boeing unveils new 777 'ecoDemonstrator' test jet includes the following sentence near the end: Many airlines have already vowed to offer carbon-neutral flights and explore ...
Propane vs. natural gas stove - indoor air quality?
I've seen plenty of articles about gas stoves and the impact on indoor air quality. Specifically, there are reports of much higher CO2, NOx, PM 2.5 particulates, and formaldehyde, relative to electric ...
What hydrocarbons are produced by a diesel motor?
HC (I assume hydrocarbons) is a column in the euro emission standards for trucks & buses. Which hydrocarbons are produced and at what quantities? Would the particulate matter emissions be ...
Does a single Euro VI bus really release less NOx than a euro 6 diesel car?
A transport expert claimed that a Euro 6 car has fewer NOx emissions than a Euro VI bus, surely this cannot be correct?! https://en.wikipedia.org/wiki/European_emission_standards Euro 6b (diesel car) -...
Will planting trees around my house save me from pollution?
If one is living in a polluted city and plants trees around their house, Will it reduce air pollution? What about reducing heat in the summer?
How effective is a Smoke Control Area at reducing particulates? (UK)
Smoke Control Areas are in place in 195 out of 434 local authorities. 53 of those cover the entire local authority. Smoke Control Areas make it illegal to burn coal and other smokey fuels and ...
Do electric cars create more particulate pollution than petrol cars?
I have seen some reports saying that electric cars, because they are heavier and put more strain on the tyres, will create more particulate pollution than a petrol car. Is this true? and if so what ...
My residential colony burns dry grass every year; how can I stop them?
Every year during June-October, it rains and a few months later after the rainy season there is a lot of grass growing in the empty sites in my residential colony. So all the grass is cut, piled up ...
What are the most common sources of VOC pollution in outdoor air?
I have a personal pollution monitor that has been recording higher levels of VOCs the last 18 hours or so and I'm trying to understand and consider the reasons for this. I live in a fairly busy city (...
What are the benefits or shortcomings of a moss wall?
I'm considering to put up a small moss wall in my workplace. What benefits or shortcomings should be considered regarding inhabitants' health and environment impact of a moss wall? Update: It's an ...
Preventing idling - ideas to keep warm in a car when the engine is off and it is cold outside
I have asked a few people whose cars are idling if they mind switching them off to reduce pollution. One response I get from quite a lot of people is that they need to keep the car running to enable ...
EU Real Driving Emissions testing (RDE) - does it factor in real driver behaviour and the inefficient driving habits they often exhibit?
Drivers often floor it at the lights, a large number switch off their start/stop systems, they might idle for an hour to listen to the radio, exceed the speed limit and exhibit other inefficient ...
Why are new cars being built in the UK / europe without Start-Stop technology when it seems it can lower pollution?
Everything I have read online seems to indicate that start / stop technology reduces air pollution, is (marginally) better for the engine, reduces emissions and is more economical (link1, link2, link3)...
Does Start / Stop technology in cars have an impact on air quality and by how much?
I have repeatedly heard from various car enthusiasts that start stop technology has no benefit in improving air quality (or the tiniest smallest negligble benefit). Does it have an effect and how much?...
What information is lost when converting other air pollution into CO2e?
I'm struggling to explain the most important aspects of air pollution in a concise way. I understand CO2 is the biggest issue and long-term driver of global warming, but beyond that I'm lost. News ...
Is there any way to recycle air-pollution into fertilizer?
Vehicles and Factories produce air-pollution like Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2). Plants use Fertilizer with those same compounds (NO2 & SO2) So, is there any method to capture ...
Is heating with candles economically and/or ecologically worthwhile?
Considering my home doesn't have a heating system nor chimneys, I wonder if it's worthwhile to heat using only candles. There are multiple dimensions to consider: Does it cost less than electric ...
How is NOx mg/km from diesel cars and trucks related to µg/m3 in the air?
There are two different limits for NOx / NO2 in Europe: 1) 80 milligrams NOx per km that a diesel car or truck drives: Euro 6 . (In some cities you can't drive a diesel that emits more than that.) 2)...
What would be a viable and justifiable policy to handle short-term acute pollution incidents across large urban areas such as Delhi?
Air pollution in Delhi has rose up to hazardous level with air quality index crossing 500 in many areas. But unlike other polluted cities (like Beijing), Delhi has no shut down of schools and ...
What impact do CFCs have on ozone? [closed]
I have read that Chlorofluorocarbons (CFCs) are detrimental to the Ozone layer. How exactly? Wasn't Mount Erebus shooting thousands of tons of chlorine per day into the upper atmosphere and over to ...
Is pellet fuel a sustainable energy source in the way it's used now?
Pellet fuel is considered a sustainable energy source. But the way it's used now seems to produce air pollution which I think should not happen in case of sustainable energy source. So is pellet ...
What measures could be taken to decrease the air pollution in a big city?
I live in Madrid, where like in most big cities there is a high level of air pollution, especially due to the traffic. The levels of pollution reached the maximum allowable level a couple of months ...
Why is Delhi the most air-polluted city of the world?
Despite the fact that India lies below USA and China on the list of carbon emitters in world, why is Delhi the most air-polluted city of the world? Also why are so many Indian cities (and no US city),...