Water Security is National Security

Water resources and how they are managed impact almost all aspects of society and the economy, in particular health, food production and security, domestic water supply and sanitation, energy, industry, and the functioning of ecosystems. Under present climate variability, water stress is already high, particularly in many developing countries, and climate change adds even more urgency for action. Without improved water resources management, the progress towards poverty reduction targets, the Millennium Development Goals, and sustainable development in all its economic, social and environ- mental dimensions, will be jeopardized. UN Water.Org

Showing posts with label warming. Show all posts
Showing posts with label warming. Show all posts

Tuesday, November 6, 2012

UK water resources 'left to weather's mercy'

A new report blames the government for leaving the UK's water resources at the mercy of the weather.

The document from 16 leading environmental organisations says it took the wettest ever summer to avert serious drought.

It warns that another series of dry winters would put Britain back on drought alert.

The government said its draft Water Bill would build resilience into the UK's water infrastructure.

The Blueprint for Water report measures the Government's performance against 10 steps to sustainable water by 2015.

It applauds ministers' commitment to tackle unsustainable abstraction from rivers and wetlands, extend the use of metering at a fair price and develop a catchment-based approach to managing the water environment.

But it says ministers are still failing to produce a long-term, sustainable approach which works with our natural water systems.

The groups want much more use of moors, marshes and plants to store and clean rain water, instead of allowing it to run straight into rivers and thus increase the risk of flooding. This would help tackle droughts as well as floods.

The chair of the Blueprint for Water coalition, Carrie Hume, said: "Lack of action to fix our broken water system is a false economy. We cannot continue to lurch between flooding and drought which is damaging for people, businesses and wildlife."

The Blueprint for Water was launched in November 2010. The Government is scored every two years on its progress. More

 

Tuesday, September 11, 2012

Droughts Are Pushing Trees to the Limit

ScienceDaily (Sep. 10, 2012) — Droughts in the Southwest made more severe by warming temperatures are putting plants in stressful growing conditions, a new study has found, identifying an increasingly water-thirsty atmosphere as a key force that sucks moisture from plants, leading to potentially higher stress -- especially in mid and low elevations.

As temperatures rise and droughts become more severe in the Southwest, trees are increasingly up against extremely stressful growing conditions, especially in low to middle elevations, University of Arizona researchers report in a study soon to be published in the Journal of Geophysical Research Biogeosciences.

Lead author Jeremy Weiss, a senior research specialist in the UA department of geosciences, said: "We know the climate in the Southwest is getting warmer, but we wanted to investigate how the higher temperatures might interact with the highly variable precipitation typical of the region."

Weiss' team used a growing season index computed from weather data to examine limits to plant growth during times of drought.

"The approach we took allows us to model and map potential plant responses to droughts under past, present and future conditions across the whole region," explained Julio Betancourt, a senior scientist with the U.S. Geological Survey who co-authored the study along with Jonathan Overpeck, co-director of the UA Institute of the Environment. Betancourt holds adjunct appointments in the UA department of geosciences, the UA School of Geography and Development, the UA School of Natural Resources and the Environment and the UA Laboratory of Tree-Ring Research. More

 

Tuesday, May 8, 2012

2 Facing water shortages, Indian farmers dig in

Kai Ryssdal: There are, plus or minus, 7 billion people now living on this planet. By the middle of the century, the United Nations tells us it's gonna to be 9 billion. Among the many, many questions that raises is how we're gonna feed them all. The answer is complicated -- a mix of politics, culture, science, and traditions all affecting the global food supply.

Here's part of the science. The average person drinks a couple of quarts of water every day, but it takes more than a thousand times that to produce a day's worth of food. That's a problem everywhere, but especially in India, where scientists say nearly a third of that country's underground aquifers are already in critical condition and worry that the country is headed for a full-blown water crisis.

Today on our series "Food for 9 Billion," Jon Miller went to India to meet a man who's trying to do something about it.


Jon Miller: Rajendra Singh lives in a patch of forest hours from anywhere in the dry hills of eastern Rajasthan. It's dark when I get there. We eat dinner on the ground by an open fire, then he leads me to his office, lights a candle, settles on a mattress and tells me how he came to be famous as the "water man."

Rajendra Singh: When I came here I don't know about the water management, I don't know the water engineering. My background is in the medical science.

This was the 1980s, and Singh had recently finished a degree in traditional Indian medicine. Inspired by Gandhi, he decided to move to the poorest, driest, most godforsaken place in his area and build a health clinic and a school.

Singh: After seven month, one old man told me, Rajendra, we not need medicine and education. We need water. Without water we can't survive. More