| General > General Technical Chat |
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| Mr. Scram:
--- Quote from: maginnovision on October 13, 2019, 04:23:37 pm ---You can't have a forest in the desert, and the US is BIG. There is no way you could control all of it. Just California is as big as: Cameroon, France, Iraq, Morocco, Papua New Guinea, Paraguay, Spain, Sweden, Thailand, Turkmenistan, Uzbekistan, Yemen --- End quote --- It's also wealthier than most of those. Size is a non issue. |
| tom66:
--- Quote from: KaneTW on October 13, 2019, 12:49:12 pm ---Am I misremembering things or did the CO2 emission composition in studies change A while back I was sure that passenger vehicles were a tiny contributor to greenhouse emissions, but current statistics show around 60% of all transport related emissions (so about 10% of all emissions) to be from light duty passenger transport. Is my brain playing tricks or was it always this way? --- End quote --- It's always been this way? Passenger cars & trucks contribute about 20% of emissions in the EU for instance (transport contributes 30% of which private cars are ~55% of this, light+heavy trucks ~30%, public transit ~5% and aircraft the balance.) Hence the push towards electrification of vehicles - only way to stop them killing the planet we all live on. |
| SiliconWizard:
According to this: https://data.worldbank.org/indicator/EN.CO2.TRAN.ZS The % of global CO2 emissions from transport is about 20%, only a fraction of this being from private transportation (the fraction depends on the region of the world obviously, and I don't have the world average, if someone does... but I remember figures like maybe 10% to 20% of the overall transport, which would mean that private transportation would account for only 4% of the total at worst...) Interestingly, note that this % hasn't increased significantly since the 60's. Only a little bit. The overall tendency seems to be on the rise, but it's still not that spectacular. Take a look at the other contributors. The only one that has increased A LOT in proportion is the CO2 emissions "from electricity and heat production". Which, if we speak of CO2 only, would (at least until there is a major change in electricity production worldwide), would make the switch to electric vehicles on a global scale a non-sense. |
| Mr. Scram:
--- Quote from: KaneTW on October 13, 2019, 12:49:12 pm ---Am I misremembering things or did the CO2 emission composition in studies change A while back I was sure that passenger vehicles were a tiny contributor to greenhouse emissions, but current statistics show around 60% of all transport related emissions (so about 10% of all emissions) to be from light duty passenger transport. Is my brain playing tricks or was it always this way? --- End quote --- I have the same feeling. Various sources seem to list quite different numbers. |
| soldar:
--- Quote from: nctnico on October 13, 2019, 04:37:12 pm --- But most of these countries don't have the financial resources that California has and yet they don't have huge raging wild fires (or need to shut down electricity because the wires cause sparks). --- End quote --- You are misinformed. All southern European countries have tremendous wildfires every year and they are getting worse, it seems. The news keep talking about how it is all due to global warming. Just search for "Portugal wildfires" and you will find plenty. Same thing with Spain, Italy or Greece. Now, I do not know if any are caused by electric distribution lines but it is difficult to compare these things as there are many variables. European countries are generally more densely populated than America which means lower km of line per customer so the lines can be maintained better. Spain has very high cost of electric power which means they should be able to maintain the infrastructure better (if there is anything left over after all the graft and corruption). Anyone who proposes burying all lines is talking out of their ass. In no country in the world are all lines buried (maybe excepting the Vatican and the private republic I have in my bathroom). The cost would be prohibitive and it would make no sense. Only in urban and suburban areas does it make sense to bury lines. Different cultures have different attitudes. In Spain we build houses with stone, brick and concrete, built to withstand whatever the weather can throw at them. In America they prefer to build cheaper, lumber and drywall, that the first wind will carry away. Then they just claim the insurance and rebuild. They prefer to have a bigger but less sturdy house. Or a cheaper house so they can have money for other things. Same thing with electric distribution wires. Yes, you see wires on poles that you would not see in Spain but that is a choice. Probably many Spanish people would prefer to pay less for electricity in exchange for seeing wires in front of their homes. You can't please everybody. |
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