News tagged with solar irradiance
Nutrient supply after algal bloom determines the succession of the bacterial population
Algal blooms can considerably interfere with summer holidays by the sea. In the coastal zone of temperate regions a spring algal bloom is not a sign of excessive nutrient input, but most of all a consequence ...
May 04, 2012 |
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Earth's energy budget remained out of balance despite unusually low solar activity
(PhysOrg.com) -- A new NASA study underscores the fact that greenhouse gases generated by human activity -- not changes in solar activity -- are the primary force driving global warming.
Space & Earth / Earth Sciences
Jan 30, 2012 |
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Explaining the mystery of the missing sunspots
Sunspots have been observed for about four centuries, since they were first reported by Galileo. Appearing in roughly eleven-year cycles of activity, sunspots are regions of strong and complex magnetic fields ...
Space & Earth / Space Exploration
Apr 05, 2011 |
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Improved measurements of sun to advance understanding of climate change
Scientists have taken a major step toward accurately determining the amount of energy that the sun provides to Earth, and how variations in that energy may contribute to climate change.
Space & Earth / Earth Sciences
Jan 14, 2011 |
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Gold nanoparticles create visible-light catalysis in nanowires
(PhysOrg.com) -- A scientist at the Argonne National Laboratory has created visible-light catalysis, using silver chloride nanowires decorated with gold nanoparticles, that may decompose organic molecules ...
Jun 15, 2010 |
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Clouds and the Alternative Energy Grid
California's goal of generating 33 percent of its power from renewable energy sources by 2020 will be challenging on days when clouds shade acres of solar photovoltaic panels or when thousands of wind turbines ...
Technology / Energy & Green Tech
Mar 16, 2010 |
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More efficient solar power with space technology
(PhysOrg.com) -- A new system from an Italian company uses weather satellite data to estimate the potential of solar cell power plants and monitor their performance. The approach helps to give a faster return ...
Technology / Energy & Green Tech
Oct 16, 2009 |
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New Sun-Watching Instrument to Monitor Sunlight Fluctuations
(PhysOrg.com) -- During the Maunder Minimum, a period of diminished solar activity between 1645 and 1715, sunspots were rare on the face of the sun, sometimes disappearing entirely for months to years. At ...
Space & Earth / Space Exploration
Mar 23, 2009 |
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2008 Was Earth's Coolest Year Since 2000
(PhysOrg.com) -- Climatologists at the NASA Goddard Institute for Space Studies (GISS) in New York City have found that 2008 was the coolest year since 2000. The GISS analysis also showed that 2008 is the ...
Feb 23, 2009 |
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