Dot Earth Blog: Satellite Tracking of Middle East Aquifers Points to End of 'Data Denial'

Jay Famiglietti, one of the authors of an important new study on the rapid depletion of aquifers under the Tigris and Euphrates river basins, has?posted an excellent overview of the work and its context for policy, and noted that he and other authors are preparing for a two-week ?water diplomacy? tour to discuss their findings in the affected region.

The project shows how improving systems for observing and analyzing environmental trends are brightening prospects for better management of resources and risks in struggling regions ? even when governments might not want the information revealed. This is as true for forests as it is here for water supplies.

Here are some notable excerpts from Famiglietti?s post, which is particularly notable given President Obama?s planned visit to the Middle East this spring:

Worse to come:

Our team?s expectation is that the water situation in the Middle East will only degrade with time, primarily due to climate change. The best available science indicates that the arid and semi-arid regions of the world will become even more so: the dry areas of the world will become drier (while conversely, the wet areas will become wetter). Consequences for the Middle East include more prolonged drought, which means that the underground aquifers that store the region?s groundwater will not be replenished during our lifetimes, nor during those of future generations.

Management and transparency:

We cannot reverse climate change and its impact on water availability, but we can and must do a far better job with water management, including the modernization of national and international water policy.? Our research and its implications point to the following critical needs, not only for the Middle East, but in all regions of the world where groundwater resources are in decline.

First, it?s high time for groundwater to be included under the water management umbrella. In most of the world, groundwater pumping is unmonitored and unregulated.? It is as true in much of the U. S. as it is in the Middle East.? That?s no different than making withdrawals from a savings account without keeping track of the amount or the remaining balance:? irresponsible without question, and a recipe for disaster when multiple account holders are acting independently.

Second, since nearly 80% of the world?s water resources are used to support agriculture, continued improvements in agricultural and irrigation conservation and efficiency should be an important focus for research, development, investment and cooperation.? In the Middle East, some countries, notably Israel, are pioneers of efficiency, while others are less advanced. ?Much of the technology is in place. It just needs to be disseminated and embraced across the entire region.

Third, our report and others that have preceded it clearly demonstrate that satellite technology has advanced to the point where a reliable assessment of regional hydrology can be produced with little access to observations on the ground. Our?2009 study of groundwater depletion in India?is yet another example of current capabilities. My point is that data denial policies amongst nations will ultimately be rendered obsolete.? It will be far better to share key measurements now, to enhance and fully utilize the satellite picture for mutually beneficial water management in the long term.

For more on efficient water use in agriculture in dry regions, click back to my post on the pioneering work on drip irrigation by Daniel Hillel and read about how solar-powered pumping systems and drip irrigation are improving incomes and lives in sub-Saharan Africa.

Another relevant resource is this 2009 World Bank publication: ?Water in the Arab World: Management Perspectives and Innovations.?

Source: http://dotearth.blogs.nytimes.com/2013/02/23/satellite-tracking-of-middle-east-aquifers-points-to-end-of-data-denial/?partner=rss&emc=rss

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