Thanks for those calculations, Geoff.
I don't know if you noticed this link above, but the first lecture by K. Anderson ends with a particularly hard hitting moral plea to turn away from air travel, so I thought you might be interesting. The lecture starts at 20 minutes and the air travel bit is around the 50 minute mark.
http://www.kva.se/sv/kalendarium/the-gordon-goodman-memorial-lecture-2017
Thanks wili
The Gordon Goodman Memorial LectureI have now listened to over 2 hours of that session. Kevin Andersen was excellent - the best I've seen him do. I'll report some of the many points on other threads.
Air travelOn air travel he said "with the brutal logic of carbon budgets"
Every tonne of CO2 from our flying
Is a tonne of CO2 poorer communities can't emit
Note:
Faustian bargain
That reminded me of a background worry about stopping air travel. I looked up Nadine Unger again and found two excellent YouTube videos. A and that will be more detailed - when I properly view it.
Points from the sessionThe whole session was alot to remember. A transcript would be great. I might try IBM's Watson, which I've found modestly useful in converting speech to text. The main theme of Kevin's lecture was that we shouldn't rely on Negative Emission Technologies like BECCS but there are a few points possibly relevant to this thread.
1) Kevin estimated that the developed nations should cut carbon emissions at a rate of greater than 13% a year.
2) Industrial/wealthy nations should power down energy demand by between 40% and 70% within about 10 years.
3) In the panel discussion, the three other panelists avoided a comment from the audience about degrowth. Kevin something like we should not talk of growth or degrowth but we should talk of post-growth. (That sounded to me like avoiding the question.)
4)Teresa Anderson from ActionAid International made some powerful points about how vulnerable people were being affected by climat change.
5)Eva Blixt, of the Swedish steel producers’ association said Swedish steel was contemplating going carbon free by using hydrogen. (It took me a while for the penny to drop: Hydrogen can be used to reduce iron ore to iron - no coal needed.)
6) This prompted Kevin to say that we should be building lots of renewable energy (like off-shore wind) so that we have over capacity to cope with the lulls but use the spare energy to generate hydrogen.
Weight of EVsI think Kevin made a comment about the weight cars like of a Chevy Volt - something like "a tonne of carry carrying 100kg of person". This raises the problem of lithium batteries in transportation where weight adds to global emissions and local pollution.
For globally relevant emissions, is it the extra weight of the batteries that makes the emissions from the hybrid Prius 15% less than the Volt, when powered by electricity with thea verage US carbon rating - according to
FuelEconomy.gov?
For local PM2.5 emissions, weight is a problem for heavy cars as pointed out by Timmers and Achten in
Non-exhaust PM emissions from electric vehiclesHowever, this literature review suggests that electric vehicles may not reduce levels of PM as much as expected, because of their relatively high weight. By analysing the existing literature on non-exhaust emissions of different vehicle categories, this review found that there is a positive relationship between weight and non-exhaust PM emission factors.
Non-exhaust PM emission factors refer to emissions from brake linings, tire wear and road surface emissions.
Hydrogen hybridsCould hydrogen hybrid electric cars be better? Mercedes have a heavy looking one coming out. see
Mercedes wants to sell a plug-in hybrid that runs on hydrogen.
I'd like to see one that weighs much much less, which travels much slower but to get to Anderson's 13% a year reduction then we must travel less too.