Earth Science News  





.
WATER WORLD
Australia Must Have Better Plan For A Variable Water Future

Inflows to the Murray River showing the current drought in the context of longer term water and climate variability. Image credit - Murray-Darling Basin Authority
by Staff Writers
Canberra, Australi (SPX) Oct 13, 2010
The delivery of sustainable water supplies in Australia will require water managers and engineers to factor in a range of predicted variations in climate and long-term demand for water resources, according to a CSIRO climate and water expert, Dr Francis Chiew.

"With an expected decline in water availability in parts of Australia comes the need for more reliable quantification of historical and likely future water availability," Dr Chiew said in an address to the Practical Responses to Climate Change Conference in Melbourne.

"Predictions of future water availability and runoff characteristics are improving rapidly with more data becoming available and with the rapid progress in climate and water science.

"However, the range of plausible future projections is likely to remain large.

"Water planning and management decisions always need to consider the balance between risk and rewards, and whether the system can adapt to climate change and other factors affecting water availability such as water interception activities like farm dams, plantations and other types of development."

Dr Chiew said tools for estimating climate change impacts on water availability ranged from simple rules of thumb to modelling based on Global Climate Model projections, downscaling of climate model projections to catchment-scale climate, and hydrological models.

Recent unprecedented low stream-flows recorded in parts of Australia had shown that current water management plans are inadequate to deal with the high variability in water availability, whatever the root cause.

"There is evidence linking the 'shift' in the hydroclimate in the far south-west and south-east of Australia to climate change. However, it is difficult to separate a climate change signal from the high natural variability," Dr Chiew said.

"Projections from climate models suggest that southern Australia is likely to be drier on average in the future and that extreme rainfall events are likely to be more intense in the future. The drier conditions have implications for water security and the more intense extreme rainfall events have implications for flood design and on related water quality problems, particularly in high-runoff events following long dry periods."

Climate change represented a major and complex challenge for water planning, but it was not the only challenge.

"Climate change needs to be considered in the context of other drivers such as water interception activities, existing levels of water use and proposed development activities, and the complex interactions between these and a whole range of other factors," Dr Chiew said.




Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
CSIRO Land and Water
Water for a Healthy Country Flagship
Water News - Science, Technology and Politics



Tempur-Pedic Mattress Comparison

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
WATER WORLD
Ancient Colorado River Flowed Backwards
Palo Alto CA (SPX) Oct 13, 2010
Geologists have found evidence that some 55 million years ago a river as big as the modern Colorado flowed through Arizona into Utah in the opposite direction from the present-day river. Writing in the October issue of the journal Geology, they have named this ancient northeastward-flowing river the California River, after its inferred source in the Mojave region of southern California. Le ... read more

.
Get Our Free Newsletters Via Email
  


WATER WORLD
China web users slam nation's mine safety amid Chile rescue

Model Aims To Reduce Disaster Toll On City's Social, Economic Fabric

Slow return to school for quake-hit Haiti's students

Pakistan stability in play with flood aid: UNHCR official

WATER WORLD
Polymer Behaviors Below The 1 Nanometer Level

Examining How Materials Bond At The Atomic Level

Breakthrough Promises Bright Fast Displays At Low Power

Fox gets teeth into Chinese movie market

WATER WORLD
US lifts Gulf of Mexico deepwater drilling ban

Australia Must Have Better Plan For A Variable Water Future

Alarming Increase In Flow Of Water Into Oceans

Asia facing worsening water crisis: ADB

WATER WORLD
Himalayan climate change action urged

Disappearing Glaciers Enhanced Biodiversity

Argentine Congress votes to restrict mining near glaciers

Putin says Arctic must remain 'zone of peace'

WATER WORLD
Uruguay, S. Arabia plan for food security

New Fish Feeds Made From Fish Byproducts

Transgenic Corn Suppresses European Corn Borer And Save Farmers Billions

Crop Failures Set To Increase Under Climate Change

WATER WORLD
Hurricane Paula heads for Mexican tourist coast

Mystery Of Mount Etna Could Be Explained By New Model

Indonesia denies flash floods caused by deforestation

Hurricane Paula roils toward Mexico's Yucatan coast

WATER WORLD
Ethiopia signs peace agreement with rebel faction

HRW calls on DRCongo to arrest former rebel, now general

Clooney: world can prevent violence in Sudan

Africa's crises means arms trade thrives

WATER WORLD
'Missing link' fossil debated by science

Research Suggests Volcanoes Nixed Neanderthals

Study finds brain changes during sleep

Canadian helps severely disabled speak through music


The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement