How much of that is actually burned in the atmosphere? The rocket gets past 10 km (troposphere) in about a minute, 50km (height of stratosphere) in a little ov

How much of that is actually burned in the atmosphere? The rocket gets past 10 km (troposphere) in about a minute, 50km (height of stratosphere) in a little over two minutes and is over the Karman line by the three minute mark. The total burn time may be 9-10 minutes (or maybe a bit more, if there is a circularization burn). So it's not like that entire fuel load is getting burned at sea level. Majority of the CO2 is going into the vacuum of space - which is a pretty good place for fossil fuel CO2 to go to.