Tuesday, April 12, 2016

Changing Lightbulbs Didn't Work

Almost a year ago, in May of 2015, I wrote a piece I called '404 Why it's a Bad Number'. At the time the Keeling Curve observations of atmospheric CO2 concentration at Mauna Loa showed weekly averages in April of 403.5ppm with some daily recordings over 404.

Over the last couple of decades the CO2 concentration has been rising at a rate of about 2ppm per year but the increase from 2014 to 2015 was almost 3ppm. We need to wait till mid May to be sure of this year's increase but it looks like another 3ppm increase.  The last few days, however, have been something else. For four days the average has been about 409ppm with the recordings showing over 410 at times. This is a real outlier from the trend, more than 5ppm above the highest measurement from last year.

Human emissions from fossil fuel burning have levelled off, albeit at record highs, so the simplistic expectation would be for concentrations to keep rising at about 2ppm/year. However, increased forest and peatland fires and melting permafrost are increasing CO2 sources. Warmer sea surface temperatures reduce the CO2 absorption rate.  This year's El Niño won't have helped with warmer Pacific surface temperatures and the likely slow down in plant growth through the year.

Even with flat anthropogenic emissions we should expect atmospheric CO2 concentration to continue increasing at an increasing rate.  Since the CO2 concentration is the primary driver of global warming it should be clear that we are losing the battle. Talk of limiting warming to 1.5° or even 2° is just so much whistling in the wind. We have failed. 




We have failed but if we give up on climate change mitigation now the failure will be a whole lot worse and hit us a whole lot faster.




1 Comments:

Blogger Dr Purva Pius said...

Hello Everybody,
My name is Mrs Sharon Sim. I live in Singapore and i am a happy woman today? and i told my self that any lender that rescue my family from our poor situation, i will refer any person that is looking for loan to him, he gave me happiness to me and my family, i was in need of a loan of S$250,000.00 to start my life all over as i am a single mother with 3 kids I met this honest and GOD fearing man loan lender that help me with a loan of S$250,000.00 SG. Dollar, he is a GOD fearing man, if you are in need of loan and you will pay back the loan please contact him tell him that is Mrs Sharon, that refer you to him. contact Dr Purva Pius,via email:(urgentloan22@gmail.com) Thank you.

4:26 pm  

Post a Comment

Subscribe to Post Comments [Atom]

<< Home