I would imagine OP meant in terms of CO2 emitted by those particular planes. I have no sources, but recall hearing that due to the relative inefficiency of the engines at taxi speeds, a large percentage of the fuel required for a flight is consumed driving to/from the runway. However, how much extra emissions were made highly depends on how they did stop the flights and/or announce their presence on the runway - if the planes never left the gates, the extra emissions would be close to 0 for instance.
I'm pretty sure the point of these protests is not to make an immediate impact on statistic you pull out. They know better than that. It's about the big picture. It's about raising awareness of environmental problems and keeping them at the forefront of people's minds. It's about reminding people what's at stake. The details of how much emissions they saved that day are irrelevant; it's about taking action.
Also about giving other angry and worried people a nidus to work around. It's too easy to feel angry and alone,. protests show that you're not alone and.others are taking action.
Sitting back and politely listening to warnings has done less than nothing
I would imagine OP meant in terms of CO2 emitted by those particular planes. I have no sources, but recall hearing that due to the relative inefficiency of the engines at taxi speeds, a large percentage of the fuel required for a flight is consumed driving to/from the runway. However, how much extra emissions were made highly depends on how they did stop the flights and/or announce their presence on the runway - if the planes never left the gates, the extra emissions would be close to 0 for instance.
I'm pretty sure the point of these protests is not to make an immediate impact on statistic you pull out. They know better than that. It's about the big picture. It's about raising awareness of environmental problems and keeping them at the forefront of people's minds. It's about reminding people what's at stake. The details of how much emissions they saved that day are irrelevant; it's about taking action.
Also about giving other angry and worried people a nidus to work around. It's too easy to feel angry and alone,. protests show that you're not alone and.others are taking action.
Sitting back and politely listening to warnings has done less than nothing