Monthly Archives: November 2011

Climate Action, Climate Science

Climate clippings 55

62 Comments

WMO Greenhouse Gas Bulletin

The World Meteorological Organization’s Greenhouse Gas Bulletin has just been released. These graphs show the ‘progress’ of the main gases.

The WMO is agnostic about the reason for the increase in methane emissions, but in this ABC story Paul Fraser from the CSIRO tells us what they are thinking and it’s not good news.He says that the increase of methane is coming from high and low attitudes, which seems to indicate that northern permafrost and tropical wetlands may be the source.

The story also looks at HFCs and refrigeration. As linked on the last thread, go here to Figure 2.21 for the IPCC’s graph on forcings. Continue reading Climate clippings 55 →

Climate Action, Climate Policy & Planning, Climate Science

Climate clippings 54

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Wind electricity to be fully competitive with natural gas by 2016

So says Stephen Lacey at Climate Progress:

The best wind farms in the world are already competitive with coal, gas and nuclear plants. But over the next five years, continued performance improvements and cost reductions will bring the average onshore wind plant in line with cheap natural gas, even without a price on carbon.

That’s according to Bloomberg New Energy Finance. They say that cost reduces by 7% for every doubling of installed capacity, while efficiency has steadily improved. Continue reading Climate clippings 54 →

Climate Action, Climate Policy & Planning

IEA and the energy crunch of 2017

The International Energy Association’s (IEA) World energy Outlook 2011 had only just hit the deck when it generated a political stoush, this time between Labor and The Greens.

Greens deputy leader Christine Milne told The Age the report showed that there was no longer time to use gas – which is a cleaner-burning fuel than coal – as a stepping stone to renewable energy such as wind, solar and geothermal. ”[The outlook] is basically saying to the investment community, ‘You are going to be gambling on how long gas has got as any kind of transitional fuel’.”

However, Mr Ferguson told The Age: ”The flexibility of gas-fired technology and the fact it is the cleanest fossil fuel make it an attractive investment option.

”In addition to gas, the message I am getting firsthand out of China and India … is that coal-fired power will increase and Australia is well placed to supply coal to fuel their growing economies.”

I picked that one up in Queensland Country Life, a Fairfax paper in which they reprint articles from The Age and the SMH.

But who’s right?

Not Christine Milne, I’m afraid. She has her eye on the IEA’s 450 Scenario, but even here we find this in the IEA Factsheet:

The share of fossil fuels in the global energy mix falls from 81% in 2009 to 62% in 2035. Global demand for both coal and oil peak before 2020, and then decline by 30% and 8% respectively by 2035, relative to their 2009 levels. By contrast, natural gas demand grows by 26%, though it plateaus by around 2030.

Ferguson has his eye on what the world is actually doing.

In the Current Policies Scenario, demand [for coal] carries on rising after 2020, increasing overall by nearly two-thirds to 2035. But in the 450 Scenario, coal demand peaks before 2020 and then falls heavily, declining one-third between 2009 and 2035.

Under the New Policies Scenario (see below) coal increases to the early 2020s and then remains broadly flat. Nevertheless the increase in 2035 over 2009 is a healthy one quarter.

I’ll outline some basic concepts first, then link to some sources, followed by some discussion. Continue reading IEA and the energy crunch of 2017 →

Climate Action, Climate Policy & Planning, Climate Science

Climate clippings 53

59 Comments

GLOBAL warming is unusual

A common response to AGW warmists is that climate has always changed and always will. It’s natural and humans have nothing to do with it. Now via Climate Progress we learn from a study by Svante Björck of Lund University that apart from general moves into and out of ice ages the hemispheres do not warm or cool in sync. When one hemisphere changes the other stays the same or moves in the opposite direction. For example he found that during the Little Ice Age in Europe there were no corresponding changes in the southern hemisphere.

Last week I posted this graph to show that we are giving the system a helluva jerk. In fact we need to go back 15 million years to find CO2 levels as high as today. (if you are concerned about Antarctic thawing be very afraid.)

However, the following graph shows that the hemispheres are not perfectly in sync now:

Hemispheric land-ocean temperatures

The northern hemisphere is pulling away. The reason, presumably, it has more land, and at higher latitudes. Continue reading Climate clippings 53 →

Climate Action, Climate Science, Social Science and Society

Climate clippings 52

99 Comments

7 billion and counting

With the world’s population passing 7 billion there have been reports and analysis all over the media.

George Monbiot, clear-headed as usual, says the real problem is consumption. He also takes a look at the UN calculations, and is not impressed, but one way or another the graph is going to go up for about four decades.

Fred Pearce is not an economist, but he may have a point in saying that ageing is the trend and with that your economy goes down the tube. Japan has become the land of the setting sun.

Those two are part of The Guardian’s Crowded Planet series. Our ABC has 7 challenges for 7 billion put together by 7 academics. Continue reading Climate clippings 52 →