Andres125sx wrote: ↑02 May 2020, 18:07
henry wrote: ↑02 May 2020, 14:42
Andres125sx wrote: ↑02 May 2020, 10:57
That graph goes up to may 20th
Are you sure it´s from 2020?
It goes up to may1 2020. I specified the date range Jan 1 2020 to May 1 2020.
Ah ok thanks
But I can´t see any line doubling in that graph, the blue and pink lines have some spikes, but the values are very similar
About NOx, cars are under 20% of city pollution (over 50% for heating, rest is industry), so a 75% traffic reduction should only cause a 15% city pollution reduction. Then it´s the industry lockdown to take into account too. Then home heatings goes up...
It´s not a straightforward analysis I´m afraid
I agree, it’s not straightforward. However, the lockdown provides an unprecedented opportunity to validate models such as you mention. They can obviously vary considerably. In the U.K. Road Transport is about 30% and domestic heating isn’t significant enough to be separated out. For particulates domestic heating is much more significant.
Traffic volumes in London have reduced dramatically and detailed info is available from Google, and probably others. A well equipped researcher should be able to obtain data on gas consumption, domestic and commercial, which would reflect the Heating you mention. I can find data on Domestic electricity consumption, it’s up 15%, but not gas. Other data, such as wind and weather, are readily available. I expect lots of research in the future to validate or create models.
In relation to the thread these things are significant because the short/medium term viability of BEVs is bound up with political decisions on controlling pollution, hopefully guided by research. As an example TESLA received USD594m last year from other car makers by selling emissions credits. Since 2012 they have earned over USD 2billion by that mechanism.
From
https://stockdividendscreener.com/auto ... s-revenue/
In early years these credits were 10% of Tesla revenue and even now its 2% which has virtually zero associated cost.
Fortune favours the prepared; she has no favourites and takes no sides.
Truth is confirmed by inspection and delay; falsehood by haste and uncertainty : Tacitus