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Latest Water cycle Stories

Impact Of El Niño On Continental Evaporation
2014-01-22 12:05:08

ESA As global temperatures gradually increase, more water is expected to evaporate into the atmosphere. But using satellite data, scientists have discovered that El Niño-induced droughts have caused global declines in evapotranspiration despite rising temperatures. Terrestrial evaporation, or evapotranspiration, is the transfer of water from soil and vegetation into the atmosphere. It’s a critical component of the global water cycle and, in recent years, it has gained increased...

2013-07-23 11:25:32

Water scientists are using heat to measure the extent to which some of Australia’s inland rivers and streams could dry up due to over-extraction of groundwater. During the Millennium Drought a number of rivers and streams in the Murray-Darling Basin dried up partly as a result of over-extraction from the aquifers that normally keep them flowing. In a bid to understand the problem better and to help federal and state water managers secure our water supplies, researchers...

2013-04-12 15:46:28

First method to use weather station measurements to obtain daily evaporation rates Researchers at Columbia Engineering and Boston University have developed the first method to map evaporation globally using weather stations, which will help scientists evaluate water resource management, assess recent trends of evaporation throughout the globe, and validate surface hydrologic models in various conditions. The study was published in the April 1 online Early Edition of Proceedings of the...

Dirt Plays Important Part In Making Clean Water
2013-02-18 11:35:41

Brett Smith for redOrbit.com - Your Universe Online Rivers, lakes, and oceans may play a large role in the water cycle, but many people don´t realize that one of the biggest factors in keeping water clean lies just below their feet. According to Henry Lin, a professor of hydropedology and soil hydrology at Penn State, the ground plays an important role in keeping the environment clean by acting as a natural water filter and purifier. In his presentation to the annual American...

A Tree In The Sierra Nevada
2012-08-08 10:29:40

A coniferous view of the link between snowmelt and water supplies in the U.S. West The following is part two in a series on the National Science Foundation's Critical Zone Observatories (CZO). Part one describes the work of the Susquehanna Shale Hills CZO. White fir, ponderosa pine, Jeffrey pine. Sugar pine, incense cedar, red fir: These are conifers of the headwater ecosystems of California's Sierra Nevada. If trees could talk, what tales they might tell of the health of the...

2012-07-30 13:49:09

After the fall of the Soviet Union twenty years ago, water distribution in Central Asia became a source of conflict. In areas where summer precipitation is low, glaciers play an important role when considering the quantity of available water. The Tien Shan region is a prime example; mountain glaciers in this region contribute significantly to the fresh water supply in the arid zones of Kyrgyzstan, Kazakhstan, Uzbekistan, Turkmenistan, and Northwestern China. Like Switzerland, Kyrgyzstan...

Atmospheric Warming Intensifies Earth’s Water Cycle
2012-05-22 04:29:42

Australian scientists from the Lawrence Livermore National Laboratory in California and the Commonwealth Scientific and Industrial Research Organization (CSIRO) report that in the last fifty years, salinity levels in the world´s oceans have shifted and that climate change is affecting global rainfall and evaporation cycles. According to the lead author of the study, Dr. Paul Durack, researchers looked at the correlations between salinity, rainfall, and evaporation in climate models...

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2011-05-12 07:45:18

Western Europe's exceptionally dry spring is clear to see in maps generated using data from SMOS. While these maps offer an interesting view of the stark difference in soil moisture compared to a year ago, the data are also important for agricultural and hydrological applications. ESA's Soil Moisture and Ocean Salinity (SMOS) mission has been orbiting Earth for 18 months now, making global observations of the moisture held in the top layers of soil and salt in the surface waters of the...

2010-10-12 13:39:22

The soils in large areas of the Southern Hemisphere, including major portions of Australia, Africa and South America, have been drying up in the past decade, a group of researchers conclude in the first major study to ever examine "evapotranspiration" on a global basis. Most climate models have suggested that evapotranspiration, which is the movement of water from the land to the atmosphere, would increase with global warming. The new research, published online this week in the journal...

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2010-10-05 09:07:18

UCI-led team cites global warming, accelerated cycle of evaporation, precipitation Freshwater is flowing into Earth's oceans in greater amounts every year, a team of researchers has found, thanks to more frequent and extreme storms linked to global warming. All told, 18 percent more water fed into the world's oceans from rivers and melting polar ice sheets in 2006 than in 1994, with an average annual rise of 1.5 percent. "That might not sound like much "“ 1.5 percent a year "“ but...


Latest Water cycle Reference Libraries

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2009-07-06 17:58:20

The water cycle (or hydrologic cycle) describes the continuous movement of water above, below, and on the planet. Since the water cycle is in fact a "cycle", there is no beginning or end. Water exists in three states: liquid, vapor, and ice. Although the balance of water on our planet is fairly constant, individual water molecules may come and go. The water cycle is driven by the sun. The sun heats the oceans and allows water to evaporate into the air. The sun also heats snow and ice which...

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