After two weeks the air over Europe will be cleanest since the long long long time ago.
Considering the progress made over the last decades, we are probably setting new records (since the industrial revolution) for clean air constantly.
Nitrogen dioxide emissions drop over Italy
11–20 of 66 posts
Re: Nitrogen dioxide emissions drop over Italy
#12Reduced travel and industry will see this happen and saw this in China, globally over the year the effect will be interesting and whilst it will do wonders for the climate. One aspect that I'm currently pondering is the winter 20/21. Reason being that it has been shown that less planes flying means temperature difference day/night, slightly warmer during day, but also colder at night. As we saw for the days post 9/11…
This is 100% anecdotal but I saw it snow the other day in Tokyo in March and it’s been very cold. It’s been a while since it’s snowed in March I’m sure.
I’ve also noticed the Japanese alps we’re having a super bad winter until a few weeks back when things kicked into gear and the snow started falling again.
I have absolutely no idea but Is it possible to have a short term decrease in emissions change the weather like this ?
Re: Nitrogen dioxide emissions drop over Italy
#13Reduced travel and industry will see this happen and saw this in China, globally over the year the effect will be interesting and whilst it will do wonders for the climate. One aspect that I'm currently pondering is the winter 20/21. Reason being that it has been shown that less planes flying means temperature difference day/night, slightly warmer during day, but also colder at night. As we saw for the days post 9/11…
Afaik, aerosols have a cooling effect. Reduced pollution should lead to higher temperatures.
Re: Nitrogen dioxide emissions drop over Italy
#14TIL: Northern Italy was pretty fucked up emission-wise even before Corona kicked in.
I wonder if the extremely high fatality count in Italy is due to the hight air pollution putting people in a higher risk.
Re: Nitrogen dioxide emissions drop over Italy
#15Reduced travel and industry will see this happen and saw this in China, globally over the year the effect will be interesting and whilst it will do wonders for the climate. One aspect that I'm currently pondering is the winter 20/21. Reason being that it has been shown that less planes flying means temperature difference day/night, slightly warmer during day, but also colder at night. As we saw for the days post 9/11…
Not to be a downer but the opposite could also be true. The less economic activity, the less particle emissions. While those particle emissions eventually contribute to global warming, they actually prevent a rise in temperatures in the short-term by blocking sunlight. Like you mentioned, the highs are higher and the lows are lower.
We could actually see an acceleration of some of global warmings' effects on the climate as temperature peaks increase.
Re: Nitrogen dioxide emissions drop over Italy
#16This lines up with a hypothesis I've got that this is causing severe cases in places where there is a high baseline of lung damage. Either from asthma or other genetic conditions, or from exposure to poor air quality. Such that these lock downs are preventing more bad cases, but not by preventing the spread of covid, but by limiting exposure to other things. In this case, it could be lowering emissions period, which…
Air quality in (parts of) China is much worse than any part of Europe, even northern Italy. To be proportional, deaths in China would need to be a magnitude higher. On the other end of the scale, Switzerland would need to be almost free of fatalities, etc.
You also don’t have much of a model. It would be strange for one virus to show an extreme sensitivity to existing environmental lung damage when all our experiences show either linear or at worst multiplicative compounding.
Re: Nitrogen dioxide emissions drop over Italy
#17Reduced travel and industry will see this happen and saw this in China, globally over the year the effect will be interesting and whilst it will do wonders for the climate. One aspect that I'm currently pondering is the winter 20/21. Reason being that it has been shown that less planes flying means temperature difference day/night, slightly warmer during day, but also colder at night. As we saw for the days post 9/11…
It seems like this is a drop in the bucket in the grand scheme of all the pollution that’s happened over the last 150 years. Is it reasonable to expect a lasting effect here?
Re: Nitrogen dioxide emissions drop over Italy
#18Reduced travel and industry will see this happen and saw this in China, globally over the year the effect will be interesting and whilst it will do wonders for the climate. One aspect that I'm currently pondering is the winter 20/21. Reason being that it has been shown that less planes flying means temperature difference day/night, slightly warmer during day, but also colder at night. As we saw for the days post 9/11…
This is 100% anecdotal but I saw it snow the other day in Tokyo in March and it’s been very cold. It’s been a while since it’s snowed in March I’m sure. I’ve also noticed the Japanese alps we’re having a super bad winter until a few weeks back when things kicked into gear and the snow started falling again. I have absolutely no idea but Is it possible to have a short term decrease in emissions change the weather like…
Yes you will get events outside the norm, it is not the single events but the whole period average you need to look at, like looking at a single day or week of weather note and remembering the whole period around that single event. Yet the whole winter period would be warmer. Then you can have one part of a large country have it colder than normal and yet the other parts has it warmer and the average for that whole country being warmer, yet for those in the colder part they will disagree.
Yes you will get events outside the norm, it is not the single events but the whole period average you need to look at, like looking at a single day or week of weather note and remembering the whole period around that single event. Yet the whole winter period would be warmer. Then you can have one part of a large country have it colder than normal and yet the other parts has it warmer and the average for that whole country being warmer, yet for those in the colder part they will disagree.
EDIT ADD: >I have absolutely no idea but Is it possible to have a short term decrease in emissions change the weather like this ?
I don't think this is going be as short term and will certainly playout throughout the year at least. LongTerm: The World will be a different place a year from now, hard to speculate, but this is WW3 The World vs a Virus
Re: Nitrogen dioxide emissions drop over Italy
#19Reduced travel and industry will see this happen and saw this in China, globally over the year the effect will be interesting and whilst it will do wonders for the climate. One aspect that I'm currently pondering is the winter 20/21. Reason being that it has been shown that less planes flying means temperature difference day/night, slightly warmer during day, but also colder at night. As we saw for the days post 9/11…
Afaik, aerosols have a cooling effect. Reduced pollution should lead to higher temperatures.
depends, some reflect, some don't, but all done high up and the layers above them warms, having a detrimental effect overall. So a mixed bag, certainly not a solution.