These posts are intended to share information and ideas about climate change and hence act as a roundtable. Continue reading Climate clippings 85
On Thursday the Abbott government took four actions on climate change. First, Greg Hunt phoned Tim Flannery, letter to follow, that the Climate Commission was to cease operation. We can take for granted that money was not the problem. Five million over four years in a $400 billion pa budget is not even small change.
Abbott told us on Wednesday that his governments actions would be based on values rather than ideology.
“We will be a problem-solving government based on values, not ideology,” the new Prime Minister added.
So what problem were they solving? Too much information on climate change? Is information from independent scientific sources too inconvenient? We are told that the information we need will be prepared by the public service in the future, where there will no longer be a dedicated department for climate change.
Lenore Taylor thinks the sacking of senior public servants smacks of ideology, not values. She says two of them, Martin Parkinson and Blair Comley, appear to have been punished because of their roles in implementing the former government’s policy on climate change.
The Climate Commission site is still there, for now. I wonder for how much longer.
The other three actions require legislation – getting rid of the ‘carbon tax’, shutting down the Climate Change Authority and the Clean Energy Finance Corporation. So all the Government can do now is commence preparing legislation. Continue reading Abbott’s direct action on climate
I’m not planning to do posts on the upcoming election apart from link posts if I see anything interesting and/or important. The post on the Murdoch’s intervention started out as a link post, but then I warmed to the task. While this space is open I’d like to explore a theme that came from a comment in reaction to the LNP ‘solution’ to the asylum seeker ‘problem’. I can’t find it now, but someone asked, “What have we become?”
Moreover, what will we become? We have a choice, and in our response to the stranger in need who has chosen us, we either grow or diminish ourselves.
The task is ambitious and I’m not academically equipped for it. I’m not speaking as a philosopher or a sociologist, just “someone who is trying to sort out his ideas”, so the results may be modest. Some of the posts may not appear to be directly on the topic, but I hope all will fit together in the long run.
Meanwhile I’ll try to keep some information flowing on climate change. Both these projects may be of more use than any contribution I can make to an election here in Oz. This time CC will be free flow rather than numbered items, to save time. I’ll use bold to identify the topics.
Arctic ice is losing its reflective sheen. We all know that ice reflects more incoming radiation from the sun than does open water. Now by analysing 30 years of satellite data scientists have found that albedo of the ice itself at the end of the summer is about 15% weaker today than it was 30 years ago.
The cause of the darkening is
partly due to thinning ice and the formation of open water fissures, and partly because in the warmer air, ponds of liquid water form on the surface of the ice. The shallow ponds on the ice can dramatically reduce reflectivity and increase the amount of solar radiation that the ice absorbs.
These posts are intended to share information and ideas about climate change and hence act as an open thread. This post has emphasised science, observations and impacts. Comments, about science, observations impacts, and future predictions are welcome. I do not, however, want a rehash of whether human activity causes climate change.
1. SAM and ENSO divorce
Roger Jones at Understanding Climate Risk has a post on global warming breaking the link between SAM and ENSO, with consequences for our weather.
To help, GMT in the graph means ‘global mean temperature’.
With the global warming signal taken out (top panel), the relationship between ENSO and SAM is strong but with it in, they depart in the late 1960s (lower panel).
There’s also an article in The Age.
So what does this mean for Australia’s climate? It means that an overwhelmingly positive SAM is keeping the westerlies south and contributing to our drier autumn winters and delivering weather typical of the Riverina to southern Victoria according to Cai. Recovery of the ozone layer and reduction in greenhouse gas emission would stabilise this process, rather than continuing to send it south.
In summer it also allows the easterly trades greater access, bringing in more moisture from the tropics and enhancing La Niña summer rainfall. Continue reading Climate clippings 79
The last Climate clippings was back in March 2012. I’ve decided to start it up again, so we’ll see how we go. What I try to do is to include up to eight entries with an average of no more than 125 words. Readers who want to keep up in a general way should be able to gain a basic understanding by reading the entries without following the links.
This time the entries blew out to an average of about 150 words.
Climate clippings also serves as an open thread to share interesting links.
1. Climate Consensus – the 97%
Announced at Skeptical Science as a new Guardian blog, John Abrahams and Dana Nuccitelli will be writing at Climate Consensus – the 97%. It does have comments, but to me is not formatted like a blog. Maybe a newspaper blog.
It really started on 24 April. So far it’s not high volume, but looks interesting. Nuccitelli blogs at Skeptical Science as dana1981. The new blog is targeted at a more general audience. It appears their output is going to include correcting the errors and myths of the climate change contrarians, which is welcome. Continue reading Climate clippings 72
Recently the Climate Commission issued a report in its The Critical Decade series on Extreme Weather looking at the issues of
- Drought, and
- Sea level rise.
At Radio National’s The World Today Professor Lesley Hughes, a Macquarie University ecologist, talked to Eleanor Hall.
The report looks at extreme weather experience in recent times, such as that documented in the Commission’s report The Angry Summer, puts it in a broader context using the latest science and then uses that as a window to project into the future. The message is plain. The climate has shifted, expect more and more extreme weather and we need to act now.
we really need to view all these events not in isolation but as part of a trend for the future. We need to prepare for them and we need to do our absolute best to cut greenhouse gases to stabilise the climate to prevent them getting to the point at which we cannot adapt.(Emphasis added)
1. State of the climate 2012
BOM amd the CSIRO have produced the State of the Climate – 2012 report. BOM has a handy summary summary and link to the brochure. The CSIRO site has some added interviews. I’ve extracted two images. First is the relentless increase in ocean heat content:
Second is the rainfall pattern for April to September from 1997 to 2011:
According to the report we can expect the same only more so in the future.
The year in review
For me the year began with the post Climate crunch: the fierce urgency of now, wherein we were reminded that the time for significant action on climate change was now and that postponing such action would make things quite a lot harder.
This message was reinforced by the Climate Commission’s report The Critical Decade with the following message:
“This decade is critical. Unless effective action is taken, the global climate may be so irreversibly altered we will struggle to maintain our present way of life.” “Without strong and rapid action there is a significant risk that climate change will undermine our society’s prosperity, health, stability and way of life.”
UN Security Council accepts climate change as a threat to global security
The best outline I could find was at Deutsche Welle. What we got was a Presidential Statement rather than a resolution, but one that had to be voted on and accepted by members. Russia had been opposed, saying it would lead to increased politicisation. China wanted climate change addressed as part of the development agenda. There are two main outcomes:
The final statement expressed “concern that possible adverse effects of climate change may, in the long run, aggravate certain existing threats to international peace and security.”
It also requested UN Secretary-General Ban Ki-moon to include information on possible climate change impacts in his regular reports on global trouble-spots.
The Climate Commission has just released its first report (download from here) entitled The Critical Decade: Climate science, risks and responses. The report is clear, simple and succinct with excellent illustrations.
If you want to cut to the chase, the message is encapsulated in the highlighted graph. If we, the world, start to reduce emissions now (impossible) by 3.7% a year, we can get away with an eventual reduction of about 85% by 2050. If we start reducing emissions in 2020 we’ll need to reduce by 9% each year (impossible). If we start in 2015 we can get away with reductions of 5.3% per year (barely possible). But we will have to reach zero net emissions by 2040 and then go negative. Is that possible? Barely, if at all, I suspect. Continue reading Climate crunch time arrives
These posts include a brief mention of a number of news items relating to climate change. They don’t preclude treating any of these topics at more length in a separate post.
They can also serve as an open thread so that we can keep each other informed on important climate news.
Beware the collapse of the planet’s lungs
Amazon drought is consistent with what scientific models predict for a warmer globe.
Normally, rainforests function like great carbon sinks, absorbing a large proportion of the CO2 that human activity produces. But in 2005, thanks to deforestation, the Amazon became a net emitter of carbon dioxide. In that year, the rainforest is estimated to have emitted some 5 billion tonnes of CO2, almost as much as the entire output of the United States.