Thursday, May 16, 2013

Why I’m Marking Passing 400 ppm By Getting Back On An Aeroplane

Why I’m Marking Passing 400 ppm By Getting Back On An Aeroplane

By Rob Hopkins

16 May, 2013
Transition Culture

In November 2006, I sat at the back of the Barn Cinema, Dartington, and watched ‘An Inconvenient Truth‘. It had such an impact on me that by the time it ended, I had decided that I couldn’t just leave the cinema without marking the event by making some kind of change in my life. I decided that evening not to fly again, and I haven’t flown since. I have played an active part in supporting the growth of an international movement in 40 countries since then, participating in countless workshops, and discussing Transition internationally through Skype and pre-recorded talks, most of which I begin with how much carbon I have saved by not travelling in person. However, I recently watched the film ‘Chasing Ice’, and it had, if anything, a more visceral impact than ‘An Inconvenient Truth’. My resolution at the end of watching it, re-enforced by the recent passing, for the first time, of 400 ppm of C02 in the atmosphere, was that it was time to get back on a plane, and I want to use this post to tell you why.

When I was born, the atmospheric concentration of CO2 in the Earth’s atmosphere was 325.36 ppm. I was 19 when it passed 350 ppm for the first time, the level which climate scientists such as James Hansen argueis the highest concentration possible if we are to “preserve a planet similar to that on which civilization developed and to which life on Earth is adapted” When, in 2004, the first seeds of Transition were sown when I sat with my students in a classroom at Kinsale Further Education College to watch The End of Suburbia, we were at 376.15 ppm. On the day this blog first began with its first post, we were at 378.29 ppm.

When I watched ‘An Inconvenient Truth’, it was 380.18 parts per million (ppm). On the day Transition Network was formally established we had reached 386.40 ppm. On the day I left Venice last September, following the Degrowth conference (which I had travelled to by train), seeing Venice from the sea as this extraordinary jewel just inches above sea level, concentrations had reached 391.06ppm. When I sat down to watch ‘Chasing Ice’ it was 395.55 ppm.

A couple of weeks ago we passed, for the first time, 400 ppm. It’s just a number, but it had a deep impact on me, a sobering line in the sand, a deeply troubling face. As Joe Romm at Climate Progress puts it:

Certainly as we hit 400 parts per million (ppm) for the first time in human existence, with not even a plan to avoid 600 ppm, 800 ppm, and then 1000 — not even a national discussion or an outcry by the so-called intelligentsia – it is worth asking, why? Is there something inherent in homo “sapiens” that makes us oblivious to the obvious?

This means that current levels of CO2 in the atmosphere are far higher than they have been for the last 4.5 millions years at least. The graph below shows how concentrations have fluctuated over the past 800,000 years. By way of context, 30,000 years ago, Cro-Magnon man was flourishing, hunting and gathering and painting cave walls. The Guardian have created a great infographic that tells the story of 400 ppm and what it means in a very understandable way. As Damien Carrington in The Guardian puts “the last time so much greenhouse gas was in the air was several million years ago, when the Arctic was ice-free, savannah spread across the Sahara desert and sea level was up to 40 metres higher than today”.

In spite of all the efforts of the green movement, Transition initiatives, a slew of international conferences and meaningless agreements, the rise has continued inexorably. It shows little sign of slowing, the International Energy Agency warning last year that the world is on track for at least a 6 degree rise in temperatures by 2100. More


I have just been accepted by Al Gore's Climate Reality project for training a a presenter. I am therefore off to Istanbul on June 11th. See I have been trying for four years to get invited to the training, but finally succeeded this year. I will then have all the materials, videos, PPT's to present around the world. I am doing this for the same reason that Rob Hopkins speaks about in the above article. I refuse to give up, I refuse to give in to what looks inevitable. Editor