Showing posts with label CO2. Show all posts
Showing posts with label CO2. Show all posts

Friday, 10 February 2017

23 minutes to kiss the planet goodbye

Waking up in the middle of the night, the World Service was interviewing Myron Ebell.

I hope friends in the US can access this from the BBC World Service: http://www.bbc.co.uk/programmes/p04rq0fk#play

If you feel in the slightest depressed, don't listen till you are more cheerful. I haven't slept in the three hours since the show was broadcast, it's now around 06:30am.

A couple of sample take homes for the lazy:


  1. The EPA is to be gutted (staff cut by 2/3 and budgets slashed)
  2. The hiatus proves that there is no connection between CO2 and warming
  3. roughly: " it has recently been shown that the temperature record is a hoax". No, really.
Can you spot the glaring inconsistency? Others already have.

Really should go back to bed, but time seems to be getting more precious every day these days...

Friday, 10 January 2014

Whether the weather, whatever...

So it's back to a familiar pattern - the weather hits the news, and discussions arise about climate change, impacts, causes (blame), and so forth. In a sense this is good, because it brings climate to front and centre in the public consciousness, but I have a concern about it. I think it is leading us down a tricky path.

It's no surprise that weather extremes are used as tools to advocate for action on climate, since the impacts are immediately visible and present to the consciousness of the public in a way that no amount of good science or statistics can ever emulate. It's the time when people just 'get it' more readily. It's evidence by ostensive definition; 'Look!'.

The problems I have with this: first, the obvious one, that it perpetuates the language of 'cause' or 'blame'; the notion that any given weather extreme is caused by a changing climate, or evidence of a changing climate. No. It might be evidence of what happens when the weather systems of a globe or region don't do what they normally do. It might be cited as an example of what sort of damage and suffering might be expected if weather patterns change in particular places. But it is not the reason why scientists, working with long-term statistical averages, are worried about the direction we are going in. It's also, arguably, not a good precedent for future events.

The desire to get the message across, that changing climate has significant impacts which are likely to hurt us, is of course important. But a changing climate and the long-term consequences of this are much more than the sum of a series of damaging extremes in local or regional weather. So I feel that to work this particular meme, this message, is potentially dangerous. In our eagerness to get folks to pay attention, we might be skewing the real importance of what is happening to the planet and our role in this.

It will be interesting to see how the WG3 section of the AR5 copes with this apparent contradiction - that the urgency of action is demonstrable through known, visible impacts, but that the reason for concerted international effort goes beyond these impacts. Consistently, scientists have been at pains to point out that the likely consequence of AGW of more than 2 degrees is 'dangerous'; 'Dangerous Climate Changes'. 

But the dangers are not just about what happens to weather patterns in line with what we already know and can see, or measure. More worrying is the danger arising from our ignorance or uncertainty - in other words, runaway feedbacks, system-wide effects (what price a permanently accelerated jetstream, or a shutdown of the THC/AMOC?), and simply unknown effects which are only hinted at now, but would, if they happened, have really frightening consequences. I'm thinking here, for example, of what happens if, as a result of pollution and drought, insecticide and shifting wind patterns, we lose 95% of the Global honey bee population?

In simplest terms, the dangers we should be worrying about are those about which we are uncertain, but which have a logical relation to what has already been observed. To steal a phrase from a well-known Nobel scientist, what should draw our more serious attention is that the impacts of increasing atmospheric CO2, increasing deforestation, increasing black soot deposition and increasing abuse of natural ecosystems, will probably be more than we currently imagine, and different. 

Though I am reluctant to push this to the absolute extreme, the argument here is that, if the sum of the impacts of our present stewardship regime (bad joke) of the Earth are 'more and different' to what can happen within current parameters, then we really are setting ourselves up for a Global (social) transformation a couple of step-changes beyond what is currently being considered in 'mitigation and adaptation' scenarios. And we aren't in a position to anticipate these. Yet.

Which takes me at last back to my gripe. Focussing on weather extremes is short-term. Focussing on economic damage is short-term. Focussing on the evidence before our eyes is too narrow a view. If climate change is about anything, it's about the bigger picture. If sustainability is about anything, it's about the bigger picture. The value of a wood is greater than the sum of the value of each tree; the importance of finding a way to reduce our impact on our planet lies not in saving trees, or woods, it  lies in avoiding the awakening of the Kraken, of arousing Godzilla, of unleashing the rough monster that slouches towards Bethlehem to be born; it really is about keeping nightmares in the realm of the unreal.

Friday, 13 December 2013

Would you do it for the 'Gipper? Save the curve

Direct from the warren, and important enough to be worth raising:

If you have been around the Climatosphere for a while, you will already know how important it is to climate science to have reliable, long-term data sets to work with.

One of the most iconic images, seen many times over, on the 'net, is the one which shows the continuous record of CO2 atmospheric concentration, the Keeling curve:



This data set and the measurements which underlie it, is at threat of being broken for a while due to recent funding changes and delays in securing funds for its continuation. The Scripps Institute has started a public fundraiser to cover the shortfall.



Why should it matter? Because it is difficult enough to achieve public recognition of AGW without making a mess of the important work which lies at the heart of the science, as well as the public outreach. Because we need to know. Because the best science (and climate change projections) comes from the best observations.

If you understand the importance of us having datasets like this, and the importance of consistency and continuity, I follow Eli in suggesting that you may wish to make a small donation. This process has been shown to be effective and the 'cause' in this case is eminently worthy. Give if you can, and promote publically.