Tag: carbon

Cartophilia (something to pore over)

Windmap

Click on the image. Wait. Watch and be mesmerised by this visualisation by Hint.fm of current wind flow over the USA. It’s a tremendous way to get a feel for the shape of the weather. Something similarly hypnotic and revealing of weather patterns is the animation of global total precipitable water (that is, atmospheric moisture content) from the Cooperative Institute for Meteorological Satellite Studies at the University of Wisonsin-Madison. I haven’t embedded it because it’s a big animation, but it’s well worth a few bits of bandwidth.

Carbonmap

The Carbon Map is another tour de force of data visualisation — changing the shapes and sizes of countries on a global map to show how they measure on a number of indices: area, population, wealth, historic emissions, current emissions, carbon reserves and so on. The image I’ve grabbed shows the exposure of countries to sea level rise. More about the map and its creation at the Guardian.

Updated to add this amazing NASA animation of global ocean currents over 2005/7. Just look at those whorls spinning off the bottom of Africa…

Australia’s carbon price mechanism in six dot points

Rosemary Lyster, Professor of Climate and Environmental Law at the University of Sydney explains the most important features of Australia’s new emissions law. It’s interesting to compare and contrast the framework with the current ETS legislation in NZ, and what may happen to our framework if National form the next government. [Republished from The Conversation]

Australia’s carbon price mechanism has become law. But how does it work? There are six key points:

1. Australia’s emissions trajectory

By 2020, Australia will reduce all of its greenhouse gas emissions by 5% compared with 2000 levels. By 2050, emissions will be reduced by 80% compared with 2000 levels.

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The Climate Show #11: a trillion tonnes of trouble

Glenn says he thinks this show’s “a cracker” (but he always says that), and despite the lack of a special star guest — though with the help of assorted luminaries from the Climate Futures Forum (David’s Karoly and Frame, Robert Gifford and Erik Conway –) we cover a huge range of issues, from Jim Hansen’s upcoming visit to NZ, the climate talks in Bangkok and Arctic ice, to why we need to think about our carbon budget, and why a trillion tonnes of the stuff might be a tad too much. John Cook joins us to discuss why there really is a scientific consensus on the reality of climate change and its causes, and in the solutions section we look at new developments in battery technology.

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The Climate Show

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A ton too far (more bad news)

At the Climate Futures Forum in Wellington a couple of weeks ago, David Karoly discussed the idea of considering carbon emissions as a “stock” problem, not a “flow” problem. If we want to give ourselves a 75 percent chance of coming in below a 2ºC rise in the global average temperature, then we (as in all humanity) can emit around one trillion tonnes of CO2 (for more see Meinshausen et al here, discussed in the context of emissions targets at HT in this post). It doesn’t much matter when we do the emitting, because CO2 hangs around in the atmosphere for a long time, but stick to that limit we must if we’re serious about avoiding damaging warming. I like that way of thinking about the issue, as I noted in my report on the Forum, but it seems that I may have been rather optimistic about the height of the ceiling we’re living under, and our chances of hitting a 2ºC target. A new study by a team of Canadian climate modellers, Arora et al, Carbon emission limits required to satisfy future representative concentration pathways of greenhouse gases in Geophysical Research Letters, 38 (5) DOI: 10.1029/2010GL046270 (pdf here), suggests that:

…we have already surpassed the cumulative emission limit and so emissions must ramp down to zero immediately. The unprecedented reduction in fossil‐fuel emissions implied by either of these scenarios suggests that it is unlikely that warming can be limited to the 2°C target agreed to in the 2009 Copenhagen Accord.

Bugger.

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Lester Brown and the water lilies

When I was reviewing Paul Gilding’s book The Great Disruption I was frequently aware of similarities with Lester Brown’s writing, most recently World on the Edge. The parallels were highlighted further for me when I viewed an excellent recent documentary on Lester Brown’s advocacy which has recently screened on PBS in the US. I recommend the film as providing a clear overview of Brown’s thinking. It is available streamed during the month of April. For those who don’t have the time to look at it I’ll briefly highlight one or two significant points which are echoed by Gilding and which sound themes that are surely central to any hope of preventing the full danger inherent in climate change.

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