Featured Research

from universities, journals, and other organizations

Consider water use in climate change policies: Energy efficient technologies can also save water at the same time

Date:
July 3, 2014
Source:
Springer Science+Business Media
Summary:
There’s more to trying to slow down climate change than just cutting greenhouse gas emissions. Technology, policies or plans that aim to do so should also take environmental factors such as water usage into account. A more integrated approach might make some options considerably more attractive than others, especially when implemented in arid countries such as Australia.

There's more to trying to slow down climate change than just cutting greenhouse gas emissions. Technology, policies or plans that aim to do so should also take environmental factors such as water usage into account. A more integrated approach might make some options considerably more attractive than others, especially when implemented in arid countries such as Australia, advise Philip Wallis of Monash University in Australia and colleagues, in an article in Springer's journal Climatic Change.

The researchers considered the example of Australia to show how water usage influences the appeal of certain preferred mitigation options. They analyzed 74 options that were ranked in the influential "Low Carbon Growth Plan for Australia" in 2010, and together could help Australia cut its 2000 emission levels by 25 percent by 2020.

The options varied considerably as to how much water each one uses. Energy efficiency measures were found to reduce water consumption, as do measures in the power sector generally. Renewable options such as solar thermal power only moderately impact water consumption. Further reductions are possible by tapping into existing power-related water supplies or using air or salt-water cooling. Wind power, biogas, solar photovoltaics, energy efficiency and operational improvements to existing power sources can reduce water demand by offsetting the water used to cool thermal power generation. This could help save nearly 100 Mmᶾ of water in Australia annually by 2020. Wallis believes the technologies and locations used for renewable energy should appropriately reflect water constraints.

Land-based mitigation measures such as "carbon farming" for carbon credits and the suggested reforestation of land use the most water. This is likely to influence catchment water yields, depending on where planting takes place. Although such plantings can also help reduce salinity, erosion, and flooding, the researchers believe some of these endeavors should be reconsidered, either in the scale of plantings, their location, or the carbon price required for these to be cost effective.

The reconfiguring of Australian cities towards water-efficient and low-energy systems represents both a significant challenge and opportunity. Energy is a substantial operational cost in the water industry, especially since the increased use of inter-basin water transfers and desalination plants. Urban water management indirectly influences 13 percent of electricity use plus 18 percent of Australia's natural gas usage. The water supply and waste-water sectors can however ensure savings by moving towards higher energy efficiency by using, for example, variable-speed water pumps and smart water meters, and renewable energy options such as small-scale hydroelectric plants. Demand management programs targeting hot water and the diversion or localized treatment of different types of waste-water should also be considered.

"This integrated analysis significantly changes the attractiveness of some mitigation options, compared to cases where water impacts are not considered," believes Wallis. "This Australian case shows that mitigation measures that carry water co-benefits, especially energy efficiency, ought to be pursued."


Story Source:

The above story is based on materials provided by Springer Science+Business Media. Note: Materials may be edited for content and length.


Journal Reference:

  1. Philip J. Wallis, Michael B. Ward, Jamie Pittock, Karen Hussey, Howard Bamsey, Amandine Denis, Steven J. Kenway, Carey W. King, Shahbaz Mushtaq, Monique L. Retamal, Brian R. Spies. The water impacts of climate change mitigation measures. Climatic Change, 2014; 125 (2): 209 DOI: 10.1007/s10584-014-1156-6

Cite This Page:

Springer Science+Business Media. "Consider water use in climate change policies: Energy efficient technologies can also save water at the same time." ScienceDaily. ScienceDaily, 3 July 2014. <www.sciencedaily.com/releases/2014/07/140703102605.htm>.
Springer Science+Business Media. (2014, July 3). Consider water use in climate change policies: Energy efficient technologies can also save water at the same time. ScienceDaily. Retrieved August 28, 2014 from www.sciencedaily.com/releases/2014/07/140703102605.htm
Springer Science+Business Media. "Consider water use in climate change policies: Energy efficient technologies can also save water at the same time." ScienceDaily. www.sciencedaily.com/releases/2014/07/140703102605.htm (accessed August 28, 2014).

Share This




More Earth & Climate News

Thursday, August 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Scientists Have Figured Out Why Rocks Move In Death Valley

Scientists Have Figured Out Why Rocks Move In Death Valley

Newsy (Aug. 28, 2014) The mystery of the moving rocks in Death Valley, California, has finally been solved. Scientists are pointing to a combo of water, ice and wind. Video provided by Newsy
Powered by NewsLook.com
Big Waves, Minor Flooding from Hurricane

Big Waves, Minor Flooding from Hurricane

AP (Aug. 27, 2014) Thundering surf spawned by Hurricane Marie pounded the Southern California coast Wednesday, causing minor flooding in a low-lying beach town. High surf warnings were posted for Los Angeles County south through Orange County. (Aug. 27) Video provided by AP
Powered by NewsLook.com
Calif. Quake Underscores Need for Early Warning

Calif. Quake Underscores Need for Early Warning

AP (Aug. 26, 2014) Researchers at UC Berkeley are testing a prototype of an earthquake early warning system that California is pursuing years after places like Mexico and Japan already have them up and running. (August 26) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins