Logic of road tax?

[Stubby]

1 minute ago, Puffingbilly413 said:

It's all combustion be it from an engine or a stove, no?

Yes but not the rubbers from the hoops or the dust from pads .

[sime42]

1 hour ago, openspaceman said:

Particulates  from combustion have a different chemical signature from other particulates.

 

True but how often do they differentiate in the various air quality assessments that get done?

 

I still can't believe that wood burners are the worst offenders for causing particulate pollution, as a few studies have claimed recently.

[Johnsond]

20 minutes ago, sime42 said:

 

True but how often do they differentiate in the various air quality assessments that get done?

 

I still can't believe that wood burners are the worst offenders for causing particulate pollution, as a few studies have claimed recently.

Good to see you doubting it 👍. The science ain’t always worth following blindly.

[openspaceman]

2 hours ago, Puffingbilly413 said:

It's all combustion be it from an engine or a stove, no?

Yes I don't think they differentiate particulates from different types of carbonaceous fuels but they do tell the difference from particulates from brake and tyre abrasion because of their chemistry.

[openspaceman]

1 hour ago, sime42 said:

 

True but how often do they differentiate in the various air quality assessments that get done?

 

I still can't believe that wood burners are the worst offenders for causing particulate pollution, as a few studies have claimed recently.

I don't know, just pointing out they can.

 

I don't believe the pollution from a modern wood stove is as bad as they say either.

[sime42]

The fact that air quality improved a lot during lockdowns must prove something. I'm sure people didn't reduce the amount of wood they were burning, whereas we know there was an awful lot less traffic on the roads.

[GarethM]

23 minutes ago, sime42 said:

The fact that air quality improved a lot during lockdowns must prove something. I'm sure people didn't reduce the amount of wood they were burning, whereas we know there was an awful lot less traffic on the roads.

Aren't you sure it wasn't an almost complete lack of air travel ?

[sime42]

Sure, some of that as well. There were a few upsides.

I'm willing to stand corrected, but I don't think air travel emissions have that much of an impact on ground level air quality.

[GarethM]

2 minutes ago, sime42 said:

Sure, some of that as well. There were a few upsides.

I'm willing to stand corrected, but I don't think air travel emissions have that much of an impact on ground level air quality.

Think you'll find it's worse, high altitude particles of dust and smoke cause cloud formations and other weather pattern's.

 

Exact same thing happened after 9/11 for the best part of two weeks and the last time that Icelandic volcano stopped planes.

[sime42]

35 minutes ago, GarethM said:

Think you'll find it's worse, high altitude particles of dust and smoke cause cloud formations and other weather pattern's.

 

 

Yeah, but how does that directly influence ground level air quality? There's going to be far more diesel combustion, brake and tyre rubber/plastic particles on any street.

 

Not that I'm advocating all the excessive air travel btw.