An investigation into the correlation of geomagnetic storms with tropospheric parameters over South Pole

Details An investigation into the correlation of geomagnetic storms with tropospheric parameters over South Pole An investigation into the correlation of geomagnetic storms with tropospheric parameters over South Pole

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....1745l&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #1745

Computer Science

Scientific paper

We test the proposal that the Sun's magnetic activity, communicated via the solar wind, provides a link between solar variability and the Earth's climate in the Antarctic troposphere. The strength of a geomagnetic storm is one indicator of the state of the solar wind, therefore we use the dates of 51 moderate to strong winter geomagnetic storms from the period 1961-1990 to conduct a series of superposed epoch analyses of the winter South Pole isobaric height and temperature, at pressures of between 100-500 mbar. Using Student's t-test to compare the mean value of the pre and post-storm datasets, we find no evidence to support the hypothesis that there is a statistically-significant correlation between the onset of a geomagnetic storm and changes in the isobaric temperature or height of the troposphere and lower stratopshere over South Pole during winter months. This concurs with a similar study of the variability of the troposphere and lower stratosphere over South Pole (Lam and Rodger, 2002) which uses drops in the level of observed galactic cosmic ray intensity, known as Forbush decreases, as a proxy for solar magnetic activity instead of geomagnetic storms.

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