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Per ridurre il traffico la piramide delle priorità deve essere rovesciata, così. In più si riducono smog, rumore, pericolo, incidenti e si migliora la salute dei cittadini e la vivibilità della città
https://benzinazero.wordpress.com/2026/02/08/la-piramide-inversa-del-traffico-urbano/ #traffico #mobilità #urbanistica #politica
I hardly think that’s relevant. CO2 doesn’t stay where it was released.
The concentration of carbon dioxide in the mid-troposphere lags the concentration found at Earth’s surface as mixing from the lower to upper altitudes usually takes days to weeks.
You’re right, I misremembered. It’s not the CO2 that has a higher effect when released at altitude than on the ground.
It’s Nitrogen Oxides, water vapor and soot.
“In 1999, the IPCC estimated aviation’s radiative forcing in 1992 to be 2.7 (2 to 4) times that of CO2 alone − excluding the potential effect of cirrus cloud enhancement.[6] This was updated for 2000, with aviation’s radiative forcing estimated at 47.8 mW/m2, 1.9 times the effect of CO2 emissions alone, 25.3 mW/m2.[7]”
I hardly think that’s relevant. CO2 doesn’t stay where it was released.
https://airs.jpl.nasa.gov/resources/107/concentration-of-atmospheric-carbon-dioxide-from-earths-mid-troposphere-2002-to-2013/
We’re talking about yearly averages and decades of warming. Days to weeks is very short by comparison.
You’re right, I misremembered. It’s not the CO2 that has a higher effect when released at altitude than on the ground.
It’s Nitrogen Oxides, water vapor and soot.
“In 1999, the IPCC estimated aviation’s radiative forcing in 1992 to be 2.7 (2 to 4) times that of CO2 alone − excluding the potential effect of cirrus cloud enhancement.[6] This was updated for 2000, with aviation’s radiative forcing estimated at 47.8 mW/m2, 1.9 times the effect of CO2 emissions alone, 25.3 mW/m2.[7]”
https://en.wikipedia.org/wiki/Environmental_impact_of_aviation#Factors