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To: Tomas who wrote (61509)	3/5/2000 9:54:00 PM
From: Tomas	Read Replies (2) \| Respond to of 95453

Solar activity and terrestrial climate change - BBC Science, March 3 ... The Sun's show hots up An interdisciplinary study by astronomers and climatologists has found a striking correlation between structures in the Sun's "atmosphere" called coronal holes and the globally-averaged temperature of the Earth. The study suggests that the Earth's atmospheric temperature may be strongly linked to solar magnetism changes over months or years. The scientists compared the Earth's temperature with the size of coronal holes reported on the Sun during a two-decade period, starting in January 1979 and ending April 1998. Results show a clear drop in terrestrial atmospheric temperature after the Sun's magnetic field activity is most intense. "This is the first time anyone has combined these modern, reliable data sets to link solar activity and climate, and to cite several alternative mechanisms that might explain this link," Dr Eric Posmentier of Long Island University in New York explained. Coronal holes are gaps in the Sun's outer atmosphere through which the stream of hot sub-atomic particles called the solar wind pours into space to engulf the entire Solar System. The solar wind has been long suspected as a possible indirect contributor to terrestrial climate change. Dr Posmentier and colleagues think that the connection between the solar wind and climate may be more direct, suggesting that the charged particles hitting the Earth's atmosphere may affect the properties of terrestrial water clouds, particularly the percentage of clouds covering the Earth. Sun and climate news.bbc.co.uk