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While CO2 and Methane are usual suspects of giving rise to temperature, some pollutants actually do keep temperature low, though they are also harmful in other ways.
That different pollution is called "aerosol pollution", its not one of the popular names in media yet, but its a phenomena observed in many super polluted cities.
Here is example, India's New Delhi city has earned a nick name "Gas Chamber" in recent years, so much so that there was case of players vomiting in one of the sports matches played between Indian national team and Shrilankan national team in Delhi cricket stadium.
Anyways, that's not the point, there are two particular periods in year where Delhi experiences drop in temperature due to heightened "aerosol pollution"
This is bit new, but I can speak from first hand experience as I live in one of the most polluted cities too, we have very little understanding of damage our actions do to environment. And its scope far exceeds just global warming. In fact one of the more extreme case aerosol pollution type is volcano ash. In history of our planet, according to researchers ice age might have actually been triggered due to this.
Scope of this subject is really wide, we have not even scratched surface of what kind of damage we are doing. Its easy to deny it and hard to address issue. But we need to change that, or we really don't know if we will end up turning our planet into unlivable due to increased temperature or drop in it. Or just wild planet that is filled with poisonous air unlivable for oxygen dependent organisms.
Stopping climate change is impossible, climate change has been around forever and will be around forever.
We do however need to stop polluting the earth to slow down the climate change, currently the climate change is happening way to fast, way faster than ever before in history which causes extremes, extreme drought, extreme heat, ... earth can't keep up.
One major problem in my opinion is overpopulation. I don't see governments limiting the amount of kids one can have any time soon (except in China ).
With the technology we currently have nuclear power is the best solution. However there are different things we could/should do different. The way nuclear power is produced has been the same for multiple decades. Its old technology. There are new power plants being designed (Bill Gates with Terra Power is one of them) that can use old waste that is currently stored to produce new energy. If you take the USA as an example: with the waste there is currently stored in the USA they estimate they could produce enough power to last the entire USA about 40-60 years.
We should encourage such developments until we have other and better options to mass produce clean energy. Studies have shown that without more nuclear energy it will be impossible to reach certain CO2 targets. Unfortunately the public interest isn't there for such developments. The general public is afraid of nuclear power (which isn't at all justified).
I am not an expert on this matter (as you may have noticed) however i do care dearly about our planet and environment.
Going to follow this thread with great interest.
Sorry to say NO - this will not happen. Even traffic (road, sea and air) makes a large part of CO2 during the lockdown of 3 months which showed because of the grounding good effects on air and water. Unfortunately as soon as the lockdown stops the main air / water pollution will resume.
On top of this we have lot more dry areas than ever before (especially in Europe) which is starting a desertification of agricultural land, killing trees in large forests and lets shrink the glaciers in the alps even faster. Means essential reserves are in danger - which is water, food, purification of air and water.
To sum it up - we need to do more than just stop the engines for 3 months. There are many items on the to do list which need attention.
Germany has started to play the Corona-Climate game
Especially German Car manufacturer are playing the so called Corona bonus to get some climate goals out of the way. They think with overproduced products they can not reach the EU goals and do not want to pay the fines that are connected by not reaching the climate goals for the car pool by end of the year.
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