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MikeB4
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  #2647148 4-Feb-2021 15:38
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tdgeek:

 

 

 

When can we do those planes? A year or two? otherwise its yet another excellent idea that doesnt help us now. So while that's unavoidable, why dont we do things today that can save emissions today while the scientists potter away with the aircraft etc? Its like if we are seen to be on to it, it doesnt matter what actually is saved today and tomorrow

 

 

 

 

Ignoring Covid for a minute and imagine a Covid free world, now if we were there now instead of holidaying abroad holiday in Aotearoa and travel as clean as you can. If that were done globally the number of aircraft in the air would drop considerably.


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Dingbatt
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  #2647152 4-Feb-2021 15:46
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This is getting way off topic.

 

Read the title of the thread.





“We’ve arranged a society based on science and technology, in which nobody understands anything about science technology. Carl Sagan 1996


wellygary
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  #2647156 4-Feb-2021 15:49
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Fred99:

 

tdgeek:

 

When can we do those planes? A year or two? 

 

 

Nope - it'll be longer than that - think how long timescale to get a new jet plane certified from design stage, and that's starting from using known or proven technology / design and tweaking it.

 

 

The Quickest/Easiest/Cheapest way to reduce Aviation Emissions is not to fly..... For NZ that would be pretty hard,

 

But Internationally there is lots of much more low hanging fruit, with sub 2 hours flights being good first  target.... 

 

In places like the EU and parts of Asia, High speed rail are a pretty easy substitution, in fact it can often be quicker city centre to city centre.

 

In places like the US,  high speed rail could take out chunks on inter regional travel (SF-LA, NE corridor)

 

Even closer to NZ routes like SYD-MEL could yield significant reductions in Emissions..

 

liquid fuels are likely to still dominate long haul for the conceivable future, but that doesn't mean we should let "Perfect be the enemy of Good"




Fred99
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  #2647160 4-Feb-2021 15:53
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A friend of mine delivered a privately owned pleasure boat from Picton to Auckland a couple of years back.  Had to refuel with 6,000 litres of diesel in Napier on the way.  Used more diesel in two day trip "for fun" than I use in a decade.

 

 

 

 

 

 


MikeB4
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  #2647165 4-Feb-2021 15:56
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The choice or type of "clean car" cannot be looked at by itself. The future of clean transport in linked and one decision impacts others. It is also linked to all climate initiatives.


Batman
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  #2647235 4-Feb-2021 17:08
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MikeB4:

 

Farming especially Dairy has a big impact on green house gases and waterways and certainly needs to change urgently but this does not diminish the need to address our travel including cars, trucks and aircraft. 

 

 

i'm not sure. it depends.

 

if cow's existence per day is the same as driving 500km, then i'd slaughter a cow and drive less but keep the car.





Involuntary autocorrect in operation on mobile device. Apologies in advance.


Fred99
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  #2647264 4-Feb-2021 18:38
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Batman:

 

if cow's existence per day is the same as driving 500km, then i'd slaughter a cow and drive less but keep the car.

 

 

I'm very uncertain about the economics/science of the local "anti-dairy" movement.  One thing's for sure, it would be utterly pointless for NZ to abandon the dairy industry when the emissions saved here would be almost immediately negated by increased (and heavily subsidised) production elsewhere.

 

That's not the same as reducing CO2 emissions from transport, where our (NZ) contribution to global reduction may be small, but if we do cut our emissions it's not going to be taken up elsewhere.

 

Using science to get cows to reduce methane emission by genetics, feed, or management should be the goal.

 

for example:

 

The Asparagopsis species of seaweed produces a bioactive compound called bromoform, which prevents the formation of methane by inhibiting a specific enzyme in the gut during the digestion of feed. In fact, FutureFeed has been found to reduce the production of enteric methane by more than 80 per cent.

 

If that's true and viable, you'd reduce NZ's total CO2E emissions by more than if you banned all ICE transport.  If it costs lots of money to achieve, then you can betcha that globally it's not going to happen, because most countries subsidise the farming industry already, and if NZ was to increase costs to our farmers, there'd only be losers and no real winners.

 

So heeding the comment above about getting off-topic, it's relevant that clean car standard can achieve something - when killing our major contribution to CO2E from dairy will actually achieve almost nothing at all.




tdgeek
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  #2647319 4-Feb-2021 19:01
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MikeB4:

 

 

 

Ignoring Covid for a minute and imagine a Covid free world, now if we were there now instead of holidaying abroad holiday in Aotearoa and travel as clean as you can. If that were done globally the number of aircraft in the air would drop considerably.

 

 

I had a look. Its quite experimental now but not an age off. It would require shorter non stop flights. Smaller aircraft. Yes its progress. Im not sure about considerably. BUT, if the globe made the same effort and we got used to a gradual journey from A to B rather than a 16 hour flight, yes that can happen. NOW is my focus not in the never never, but the progress towards the eventual change needs to be matched by what we do now.  

 

NOW, I could reduce my fuel usage in many ways. But the Govt isn't pushing this.  


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