July 16, 2009
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Soil & Groundwater Newsletter July 16, 2009 |
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| This Week´s Featured News Stories |
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Soil climate monitoring in Antarctica
Antarctica, the coldest place on earth, has an area of about 14 million sq. km. About 98% of the continent is covered by ice, which averages about 2100 m thick. This vast ice sheet contains the earth’s largest fresh water reserve. Of the ice-free ground, only 0.3% is available for soils to form. Currently there are seven soil climate stations in Antarctica, which monitor a range of ambient atmospheric parameters, and soil moisture and temperature. A group of researchers with USDA-NRCS and other organizations describe in the latest issue of Soil Survey Horizons how the Natural Resources ... |
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Ozone, nitrogen change the way rising carbon dioxide affects earth`s water
Through a recent modeling experiment, a team of NASA-funded researchers have found that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways. The researchers concluded that models of climate change may be underestimating how much water is likely to run off the land and back into the sea as atmospheric chemistry changes. Runoff may be as much as 17 percent higher in forests of the eastern United States when models account for changes in soil nitrogen ... |
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