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Published: 2009

Costs of climate adaptation greatly underestimated


Scientists led by a former co-chair of the Intergovern-mental Panel on Climate Change (IPCC) have warned that the UN negotiations aimed at tackling climate change are based on substantial under-estimates of what it will cost to adapt to its impacts.

The real costs of adaptation will likely be two to three times greater than estimates made by the UN Framework Convention on Climate Change (UNFCCC), say Professor Martin Parry and colleagues in a report published by the International Institute for Environment and Development and the Grantham Institute for Climate Change at Imperial College London, UK.

The researchers warn that this underestimate of the cost of adaptation threatens to weaken the outcome of UNFCCC negotiations.

The UNFCCC has estimated annual global costs of adapting to climate change to be US$40–170 billion, or the cost of about three Olympic Games per year. But the report’s authors warn that these estimates were produced too quickly and did not include key sectors such as energy, manufacturing, retailing, mining, tourism and ecosystems.

The new report’s key findings include:

  1. Water: The UNFCCC estimate excluded costs of adapting to floods and assumed no costs for transferring water within nations from areas of surplus to areas of deficit.

  2. Health: The UNFCCC estimate excluded developed nations, and assessed only malaria, diarrhoea and malnutrition – perhaps only 30–50% of the global total disease burden.

  3. Coastal zones: Costs associated with increased storm intensity and sea-level rise could be about three times greater than predicted by the UNFCCC.

The new report was reviewed by seven of the world’s foremost adaptation scientists, including the lead authors of the original UNFCCC study.







Published: 2009

Northern water assessment informs development capacity

Helen Beringen

It either doesn’t rain or it pours up north. Such variability is one of the challenges identified in the first consistent, analytical water assessment of northern Australia released from CSIRO’s Water for a Healthy Country Flagship. The work is informing thinking about the development capacity of the region.

Regional coverage of the Northern Australia Sustainable Yields Project.
Regional coverage of the Northern Australia Sustainable Yields Project.
Credit: CSIRO

Rainfall and runoff variability are just two components of a comprehensive review of water resources for water policy decisions which form part of the assessments undertaken by the Northern Australia Sustainable Yields Project.

Released by Parliamentary Secretary for Water, Dr Mike Kelly, at the RiverSymposium in Brisbane on 21 September, the study resulted from a March 2008 agreement by Council of Australian Governments (COAG) to extend the CSIRO work on sustainable water yields and availability that had been completed in the catchments of the Murray-Darling Basin.

Dr Kelly said the research would be a valuable resource to inform decisions about the conservation and development of northern Australia’s water resources.

‘From Broome in Western Australia to Cairns in Queensland, the Northern Australia Sustainable Yields (NASY) reports provide important information on current and likely future water availability in northern Australia,’ he said.

Despite popular perceptions that northern Australia has a surplus of water, the research found the extremely seasonal climate with continuously high temperatures meant that the landscape was annually water-limited, with little or no rain for three to six months every year, and very high potential evapotranspiration rates.

‘Northern Australia experiences high rainfall during the wet season, with most falling near the coast and with year to year amounts that are highly variable,’ said project leader Dr Richard Cresswell.

‘Runoff follows a similar pattern to rainfall, with most surface flow approaching the estuaries, with potential inland dam sites receiving less and quite variable amounts of water and suffering very high evaporation rates.

‘The very few river reaches that flow year-round are mostly sustained by localised groundwater discharge and have high cultural, social, ecological and developmental value,’ he said.

‘Groundwater may offer potential for increased extractions for development, though the highly dynamic nature of shallow aquifers, which rapidly fill during the wet season and drain through the dry season, means there is little opportunity to increase this groundwater storage and careful management is required where these groundwaters also provide sources for the few perennial rivers.’

Dr Cresswell said future climate predictions for the north suggest that evapotranspiration was likely to increase while rainfall was likely to be similar to historical levels, which were lower than the last decade, particularly in the west.

Speaking to ABC Rural, Joe Ross, Chair of the federal government’s Northern Australia Land and Water Taskforce (charged with finding new development opportunities in Northern Australia), said the CSIRO report confirmed that expectations for food production in the north have been ‘over the top’, and that there would be limited opportunity for broad-scale agriculture in the tropics.

The Taskforce’s submission to the government later this year will take into account the central findings of the CSIRO teams’ work. ‘It covers not only the amounts of water in northern Australia, but also what impact there’ll be on the livelihoods of the community of northern Australia, in particular, one of the main constituents being Indigenous Australians,’ Mr Ross said.

The Northern Australia Sustainable Yields Project is part of the Australian Government’s Northern Australia Water Futures Assessment (NAWFA), a five-year program to develop an enduring knowledge base to inform decisions about conservation and development of northern Australia’s water resources, so that any development proceeds in an ecologically, culturally and economically sustainable manner.


More information:

Dr Richard Cresswell: Richard.cresswell@csiro.au







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