Posts Tagged ‘The Conversation’
CSIRO (the Commonwealth Scientific and Industrial Research Organisation) is facing another round of job losses to basic public research, with the news that the organisation is making deep staffing cuts to areas such as Oceans and Atmosphere and Land and Water. Internally, there are signals that Oceans and Atmosphere will be cut substantially, amid 350 job losses over two years across the organisation.
In a letter to staff, CSIRO chief executive Larry Marshall said:
CSIRO pioneered climate research … But we cannot rest on our laurels as that is the path to mediocrity. Our climate models are among the best in the world and our measurements honed those models to prove global climate change. That question has been answered, and the new question is what do we do about it, and how can we find solutions for the climate we will be living with?
‘Wait and see’ on climate? No, the science is clear: act now
When should we act to reduce our greenhouse gas emissions and tackle climate change: now, or later when we know more?
One person who thinks we should wait is New York University theoretical physicist, and former US Under Secretary of Energy for Science, Steven Koonin.
In an article published by the Wall Street Journal, and reproduced in The Australian, Koonin claims that climate models are still too uncertain and that everyone should hold their horses, arguing that:
… because the natural climate changes over decades, it will take many years to get the data needed to confidently isolate and quantify the effects of human influences.
That’s not to say that the issue isn’t pressing. But Koonin says we should urgently do science, rather than urgently cut emissions:
The science is urgent, since we could be caught flat-footed if our understanding does not improve more rapidly than the climate itself changes.
Well, yes. But we’ve been doing this “urgent science” for decades. Read the rest of this entry »
By Roger Jones, Victoria University (reproduced from The Conversation)
With fires still burning across New South Wales, it’s time to have a look at the role climate change might have played. Are the conditions we’re seeing natural variation, or part of a long term trend?
In fact, it doesn’t have to be one or the other.
Has bushfire risk increased due to climate change?
In research I did with colleagues earlier this year we looked at the Fire Danger Index calculated by the Bureau of Meteorology, and compared how it changed compared to temperature over time in Victoria.
South-east Australia saw a temperature change of about 0.8C when we compared temperatures before 1996 and after 1997. We know that it got drier after 1997 too.
We then compared this data to the Forest Fire Danger Index, to see if it showed the same pattern. We analysed fire data from nine stations in Victoria and did a non-linear analysis.
We found that fire danger in Victoria increased by over a third after 1996, compared to 1972-1996. The current level of fire danger is equivalent to the worst case projected for 2050, from an earlier analysis for the Climate Institute.
While it’s impossible to say categorically that the situation is the same in NSW, we know that these changes are generally applicable across south-east Australia. So it’s likely to be a similar case: fire and climate change are linked. Read the rest of this entry »
By Roger Jones, Victoria University and Celeste Young, Victoria University
The Intergovernmental Panel on Climate Change (IPCC) is the accepted global authority on climate change. It produces reports that are collectively agreed assessments of the scientific literature by leading researchers. The Fifth Assessment Report (AR5) is being delivered over 2013–2014, starting this weekend.
What an IPCC report is
An Intergovernmental Panel on Climate Change (IPCC) report is an assessment that collects and summarises current knowledge in relation to climate change. This is done using literature from peer reviewed and unreviewed (grey) sources.
It is considered the leading review globally of climate change and is produced by a team of hundreds of scientists and specialists from a diverse range of disciplines.
Guest post by Roger Bodman, Victoria University and David Karoly, University of Melbourne
Today we released research which reduces the range of uncertainty in future global warming. It does not alter the fact we will never be certain about how, exactly, the climate will change.
We always have to make decisions when there are uncertainties about the future: whether to take an umbrella when we go outside, how much to spend on insurance. International action on climate change is just one more decision that has to be made in an environment of uncertainty.
The most recent assessment of climate change made by the Intergovernmental Panel on Climate Change in 2007 looked at what is known with high confidence about climate change, as well as uncertainties. It included projections of future global warming to the end of this century based on simulations from a group of complex climate models.
These models included a range of uncertainties, coming from natural variability of the climate and the representation of important processes in the models. But the models did not consider uncertainty from interactions with the carbon cycle – the way carbon is absorbed and released by oceans, plant life and soil. In order to allow for these uncertainties, the likely range of temperature change was expanded.
This is an excellent article by Andrew Campbell on The Conversation, republished here under a Creative Commons licence.
Rethinking rural research in Australia
By Andrew Campbell, Charles Darwin University
Rural research is vital. It is about 10% of our national innovation system. Annual investment exceeds $1 billion, according to the Rural Research and Development Council. The rural sector and farm-dependent economy accounts for 12% of GDP, 14% of exports, 17% of employment, 60% of the land mass and between half and two-thirds of total water use. (Mining accounts for 9% of GDP, 35% of exports and 2.2% of employment.)
A vibrant, world-leading rural, environmental and agricultural research sector is more strategically important for Australia now than ever. This is clear from authoritative reviews on climate change, biosecurity, drought policy, biodiversity conservation, food security and energy-water-carbon intersections. The Australian Government has also received the Productivity Commission Inquiry into Rural R&D Corporations and the Rural Research and Development Council’s National Strategic Rural R&D Investment Plan.
All these reviews and reports say we need more and better rural research, development and in some cases extension. Read the rest of this entry »