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https://www.europarl.europa.eu/news/en/headlines/society/20190313STO31218/co2-emissions-from-cars-facts-and-figures-infographics https://www.europarl.europa.eu/

https://www.europarl.europa.eu/news/en/headlines/society/20190313STO31218/co2-emissions-from-cars-facts-and-figures-infographics https://www.europarl.europa.eu/news/en/headlines/society/201... https://www.epa.gov/greenvehicles/fast-facts-transportation-greenhouse-gas-emissions https://www.epa.gov/greenvehicles/fast-facts-transportation-... From those figures, the entire civil aviation sector accounts for 13% of European transport emissions and 8% of US transport emissions. I can't find a breakdown of GA vs. airline, but I highly suspect GA to be a small fraction of civil aviation emissions relative to airline. Be concerned about activities that make up the majority of emissions: passenger vehicles, electricity generation, and industry. Eliminating GA tomorrow would barely make a dent.

disillusioned 4y ago
This article is specifically about _lead_, which is used (up until now, with very few exceptions like Mogas) exclusively in GA piston aircraft. In fact, leaded aviation fuel is the largest source of lead emitted to the atmosphere in the US. Eliminating GA tomorrow _would_ make a dent on the lead exposure of those who live near GA facilities. See this study that attempts to quantify the damage done to IQ because of this additional lead: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338738/#:~:text=The%20most%20common%20formulation%20of,tons%20of%20lead%20in%202008 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338738/#:~:tex....
- giantg2 4y ago
  I'm a bit skeptical of that claim, although I do agree it's a good change. It will prevent further lead emissions, but if it's as bad as they say, then it's likely they'll still feel the effects from the soil. I live in the flight path for a small field that had been a round for a long time. Soil lead levels are very low here. I have no concerns about the atmospheric amount either. The biggest source of exposure for most people is likely food.
  - deleted 4y ago
    [deleted]
- tadfisher 4y ago
  GP edited their post, but they were insinuating GA is still not safe because of carbon emissions.
fulafel 4y ago
Chopping CO2 emissions into tiny pieces of a pie and then making a point of how small any particular slice is a traditional way of fooling ourselves about it. Also, civil aviation emissions have larger warming impact than just the CO2 emissions would say, as the radiative forcing effect is dramatically multiplied due to what happens high in the atmosphere - see eg https://csl.noaa.gov/news/2020/287_0903.html https://csl.noaa.gov/news/2020/287_0903.html (May not apply as much to GA due to lower altitudes and/or combustion properties of different fuels and engines)

disillusioned 4y ago

This article is specifically about _lead_, which is used (up until now, with very few exceptions like Mogas) exclusively in GA piston aircraft. In fact, leaded aviation fuel is the largest source of lead emitted to the atmosphere in the US. Eliminating GA tomorrow _would_ make a dent on the lead exposure of those who live near GA facilities. See this study that attempts to quantify the damage done to IQ because of this additional lead: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338738/#:~:text=The%20most%20common%20formulation%20of,tons%20of%20lead%20in%202008 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338738/#:~:tex....

giantg2 4y ago
I'm a bit skeptical of that claim, although I do agree it's a good change. It will prevent further lead emissions, but if it's as bad as they say, then it's likely they'll still feel the effects from the soil. I live in the flight path for a small field that had been a round for a long time. Soil lead levels are very low here. I have no concerns about the atmospheric amount either. The biggest source of exposure for most people is likely food.
- deleted 4y ago
  [deleted]
tadfisher 4y ago
GP edited their post, but they were insinuating GA is still not safe because of carbon emissions.

fulafel 4y ago

Chopping CO2 emissions into tiny pieces of a pie and then making a point of how small any particular slice is a traditional way of fooling ourselves about it. Also, civil aviation emissions have larger warming impact than just the CO2 emissions would say, as the radiative forcing effect is dramatically multiplied due to what happens high in the atmosphere - see eg https://csl.noaa.gov/news/2020/287_0903.html https://csl.noaa.gov/news/2020/287_0903.html (May not apply as much to GA due to lower altitudes and/or combustion properties of different fuels and engines)