11 July 2014
- Development of El Niño in 2014 continues to edge closer with sea surface temperature in the key indicator equatorial regionapproaching El Niño thresholds.
- The discharge of ocean heat to the atmosphere associated with the build-up of the El Niño phenomenon has predictably seen a rise in global surface temperatures, resulting in May 2014 being the warmest May ever recorded.
- Despite the strong initial build-up of a large warm water volume anomaly (WWV) in the equatorial subsurface ocean earlier in the year, the atmosphere has so far not provided sufficient reinforcement to maintain this large pool of warmer-than-average water and a substantial portion has been eroded.
- The last half-century of observations, however, still favour the development of an extreme El Niño event, but the substantial reduction of the warm water volume anomaly (thankfully) diminishes the odds of a powerful event rivaling that of 1997-1998 from taking hold.
04 July 2014
15 June 2014
“A game changer” is how climate scientist Dr Malte Meinshausen describes newly published research that West Antarctic glaciers have passed a tipping point much earlier than expected and their disintegration is now “unstoppable” at just the current level of global warming. The research findings have shocked the scientific community. “This Is What a Holy Shit Moment for Global Warming Looks Like,” ran a headline in Mother Jones magazine.
08 June 2014
|Breakthrough National Climate Restoration
Forum 21-22 June, Melbourne
In my previous post explaining why there is no carbon budget left for burning fossil fuels for a 2-degree Celsius (°C) target, I explained that these carbon budget calculations are expressed in probabilities of not exceeding the target. This reflects a number of uncertainties in understanding, including climate sensitivity, ocean heat uptake inertia, the influences of non-carbon dioxide forcing agents, and because results vary somewhat among model ensembles.
Of these, climate sensitivity is the biggest issue, because of the possibilities that climate change might proceed more rapidly than currently estimated because of reinforcing feedbacks, thresholds or tipping points in the climate system, or less rapidly because of dampening feedbacks.
22 May 2014
How fast and how profoundly we act to stop climate change caused by human actions, and work to return to a safe climate, is perhaps the greatest challenge our species has ever faced, but are we facing up to what really needs to be done?
Listen to David’s carbon budget interview on Radio EcoShock
Carbon budgets, climate sensitivity and the myth of “burnable carbon”
No carbon left to burn (audio + slides, 17 minutes)
We have to come to terms with two key facts: practically speaking, there is no longer a “carbon budget” for burning fossil fuels while still achieving a two-degree Celsius (2°C) future; and the 2°C cap is now known to be dangerously too high.
For the last two decades, climate policy-making has focused on 2°C of global warming impacts as being manageable, and a target achievable by binding international treaties and incremental, non-disruptive, adjustments to economic incentives and regulations (1).
14 April 2014
Climate change communication: Key psychological research findings (and why you haven’t heard about them yet) (2)
Research has identified a number of psychological barriers that can prevent people from believing in or acting on messages about climate change. Luckily, it has also suggested strategies for overcoming these barriers. Second of a two-part report by Paul Connor.
Second of 2 parts | Part 1
5. Some messages can get through to conservatives! Sort of…
One of the most common analyses one hears about the social psychology of climate change is that the issue has become increasingly politicised over the last decade. More and more, it is said, people are making up their minds on the issue according to their political allegiance, and not by an objective assessment of the facts. And certainly, there has been an observable trend for opinions on the issue to increasingly diverge across political and ideological lines.
Climate change communication: Key psychological research findings (and why you haven’t heard about them yet) (1)
Research has identified a number of psychological barriers that can prevent people from believing in or acting on messages about climate change. Luckily, it has also suggested strategies for overcoming these barriers. First of a two-part report by Paul Connor.
Part 1 of 2 parts | Part 2
1. Climate change activists are pretty decent social psychologists. Social psychologists are terrible activists.
Most climate change activists I know are at least to some degree also social psychologists. They constantly consider questions like ‘how can we change the way people think’, ‘how can we make people care more’, and ‘what is the sound bite that is going to be most effective for this campaign?’. Generally, they hold reasonable theories about human psychology and societies. And for the most part, they’re willing to revise these theories as experience dictates.
04 April 2014
Climate economic impact models meaningless, so key question is “what is survivable?” not “what is affordable?”
Forget the cost of mitigating climate change, say two researchers. It’s impossible to work out how much it will be – and whatever it is, we should do it anyway.
By Alex Kirby, Climate News Network
Two researchers who tried to work out the economics of reducing global climate change to a tolerable level have come up with a perhaps surprising answer: essentially, we do not and cannot know what it would cost.
15 March 2014
It has been a busy few weeks. All sorts of things have become apparent: Climate change is real, and it man-made, Australia’s policies are a joke, renewable energy investment is leaving Australia, wind and solar do not add costs to the grid, they don’t need new back-up, and they have been reducing prices. And the world is changing while Australia stands still. So, what’s the problem? Clarke and Dawe have the answer.
|Source: Climate Council|
The planet is warming, and so is Australia
The latest survey compiled by the CSIRO and the Bureau of Meteorology – two institutions that the Abbott government has yet to remove or successfully muzzle – shows that Australia is almost a degree warmer, on average, than it was a century ago. And that is roughly in line with global rates of atmospheric warming. And, it is set to continue warming at a rate that depends on how fast greenhouse emissions can be reduced.
The report says seven of Australia’s 10 warmest years have happened since 1998; over the past 15 years, very warm months have occurred at five times the long-term average, while very cool months have declined by a third; and by 2070, temperatures will be anywhere between 1C and 5C warmer than the 1980-1999 average, depending on future emissions cuts. Note the link between rising temperatures and emissions.
05 March 2014
|Four Degrees of Global Warming:
Australia in a hot world
Peter Christoff (ed),
The book Four Degrees or More? Australia in a hot world, edited by political scientist Peter Christoff, is a timely overview of what we know currently about both global and local predicted impacts of climate change.
As Christoff notes, ‘this four-degree world is one of almost unimaginable social, economic and ecological consequences and catastrophes’ but, given current international and Australian energy and climate policies, it is “an impending reality”. The book contains contributions by Australia’s leading scientists and economists, including Ross Garnaut, David Karoly and Will Steffen, setting out a four-degree future across the ecological, social and economic impacts, and the adaptation that will be required.
26 February 2014
by David Spratt
On 20 March I spoke, together with Adam Bandt MP, at a forum in Melbourne on Global warming, Tony Abbott and the need for climate action.
The second half of my presentation was on how to turn the tide, looking at the “middle third” in recent polling and Tony Abbott’s and his government’s vulnerability on climate, and what they are desperate to not talk about:
- More and more intense extreme weather events (exemplified by their silence on the spring 2013 fires, and record January 2014 heat);
- A public conversation that “connects the dots” between extreme events and climate change, and which gives immediacy to the perception of climate impacts;
- Constructing a climate narrative about human climate impacts, rather than electricity prices and taxes;
- Public focus on the responsibility of political leaders to “protect the people” from climate change; and
- Close attention being paid to the efficacy of their “direct action” climate plan.
23 February 2014
What’s the difference between a majestic layer of white sea ice and an ominous dark blue open ocean?
For the Arctic, it means about a 30 to 50 per cent loss in reflectivity (or albedo). And when seasonal sea-ice states are between 30 and 80 per cent below 1979 measures (depending on the method used to gauge remaining sea ice and relative time of year), that means very, very concerning additional heating impacts to an already dangerous human-caused warming.
|A dark and mostly ice-free Arctic Ocean beneath a
tempestuous swirl of clouds on September 1, 2012,
a time when sea ice coverage had declined to an
area roughly equal to the land mass of Greenland.
Image source: Lance-Modis/NASA AQUA.
How concerning, however, remained somewhat unclear until recently.
In the past, idealized climate simulations and physical model runs had produced about a two per cent overall loss in Arctic albedo based on observed sea ice losses. This decline, though minor sounding, was enough, on its own, to add a little more than a 10 per cent amplifying feedback to the already powerful human atmospheric carbon dioxide (CO2) forcing during recent years. Such an addition was already cause for serious concern and with sea ice totals continuing to fall rapidly, speculation abounded that just this single mechanism could severely tip the scales toward a more rapid warming.
12 February 2014
Think global climate change hasn’t been very noticeable from where you’re standing? Down in the oceans (which is to say, over the majority of Earth’s surface), temperatures spiked last year, as warming proceeding at an incredibly rapid pace.
Skeptical Science calls attention to the oceans’ temperature rise for the final quarter of 2013, which literally was almost off-the-charts:
|(via the National Oceanic Data Center)|
07 February 2014
On 10-11 December 2013, a Radical Emissions Reduction Conference was held at the Royal Society, London under the auspices of the Tyndall Centre for Climate Change Research at the University of East Anglia. In this blog, we look at a presentation by Professor Corinne Le Quere, of the Tyndall Centre for Climate Change Research, University of East Anglia on “The scientific case for radical emissions reductions”.
Le Quere framed “radical emission reductions” as reductions consistent with a two-in-three chance of keeping global warming to less than 2 degrees Celsius (°C), saying that there is no surety that 2°C is a safe threshold, but according to the geological record, there have been periods of up to 2°C warming during the past 800,000 years that did not trigger any “nasty or unexpected” feedbacks, though sea-levels were 5–10 metres higher than today.
06 February 2014
By Alex Kirby, Climate News Network
The planet is continuing to warm, with implications for generations ahead, and temperatures are set to rise far into the future, the World Meteorological Organization (WMO) reports.
It says 2013 was among the ten warmest years since modern records began in 1850, equalling 2007 as the sixth warmest year, with a global land and ocean surface temperature 0.50°C above the 1961–1990 average and 0.03°C higher than the most recent 2001–2010 average.
02 February 2014
[ Updated 2 February 2014]
NOTE: This blog was originally drafted as notes for a small group discussion in Melbourne. It is in part a situational analysis, covering the need to engage with conservative voters, the fragmentation of our efforts, and the growing gap between what is scientifically necessary and what is considered politically possible, resulting in a cognitive dissonance which is structurally embedded in the climate discourse. At first, I was reluctant to publish these notes because they are pretty blunt, but a number of people thought they were worth an airing, especially because the Abbott government is waging an all-out “shock and awe” war to destroy climate and environment public policy, for which much of our side appears ill-prepared.
- Related Post: A sober assessment of our situation (July 2012)
by David Spratt
“Honesty about this challenge is essential, otherwise we will never develop realistic solutions. We face nothing less than a global emergency, which must be addressed with a global emergency response, akin to national mobilisations pre-WWII or the Marshall Plan… This is not extremist nonsense, but a call echoed by an increasing numbers of world leaders as the science becomes better understood… In the face of catastrophic risk, emission reduction targets should be based on the latest, considered, science, not on a political view of the art-of-the-possible.”
— Ian Dunlop, formerly senior oil, gas and coal industry executive and CEO of the Australian Institute of Company Directors, “Global warming is a global emergency”, Crikey, 25 February 2009
Australia’s climate action movement is diverse: from large, professional national organisations to local volunteer community groups; from issue-specific campaigns focussing on coal, coal seam gas (CSG) and renewables to sector-specific groups; from organisations focused on policy-makers to activists directly confronting the fossil fuel industry. The election of the Abbott government has created a moment of crisis and a chance to review.
Here’s the pick of the crop: our most popular posts over the last three years, starting with the most read.
The state of the Australian climate movement as Labor falters and the conservatives gain ascendancy in mid-2012, some harsh realities and ways forward.
Arctic sea-ice melt record more than broken, it’s being smashed
The extraordinary events of the 2012 northern summer and their consequences.
Brightsiding is a bad strategy (5 parts)
Why all “good news” and no “bad news” is a bad climate action and communications strategy?
What would 3 degrees mean?
The astounding global impacts of 2, 3 and 4 degrees of warming.
29 January 2014
It’s a cliche that a picture tells a story better than a thousand words, and it’s really true in the case of this extraordinary map of weather modelling of northern hemisphere temperature anomalies (variations from the expected values based on climate records) for 29 January 2014:
21 January 2014
|Prof. Kevin Anderson|
First in a series
On 10-11 December 2013, a Radical Emissions Reduction Conference was held at the Royal Society, London under the auspices of the Tyndall Centre for Climate Change Research at the University of East Anglia. The conference’s purpose was described as:
Today, in 2013, we face an unavoidably radical future. We either continue with rising emissions and reap the radical repercussions of severe climate change, or we acknowledge that we have a choice and pursue radical emission reductions: No longer is there a non-radical option. Moreover, low-carbon supply technologies cannot deliver the necessary rate of emission reductions – they need to be complemented with rapid, deep and early reductions in energy consumption – the rationale for this conference.
17 January 2014
While many of us were distracted in December by seasonal festivities and summer sports, the Abbott government quietly announced a number of actions which will exacerbate the climate problem, in the long-standing tradition of avoiding scrutiny by hiding unpopular announcements in holiday periods.
The government approved Adani’s T0 coal export terminal, and the dredging for two more coal export terminals, at Abbot Point. This will be the world’s biggest coal port and open up mining in the Galilee Basin, whose nine proposed mega-mines would export coal with annual emissions of 700 million tonnes of carbon dioxide, almost twice Australia’s domestic emissions and greater than the emissions of all but six countries. Four other fossil fuel projects were approved: an Arrow coal seam gas processing facility on Curtis Island, a transmission pipeline to supply it, Clive Palmer’s China First mine, and the Surat Gas Expansion.