An effect of the 27 days solar rotation period on the electron density in the upper and topside ionosphere

Details An effect of the 27 days solar rotation period on the electron density in the upper and topside ionosphere An effect of the 27 days solar rotation period on the electron density in the upper and topside ionosphere

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eguga..1111708b&link_type=abstract

"EGU General Assembly 2009, held 19-24 April, 2009 in Vienna, Austria http://meetings.copernicus.org/egu2009, p.11708"

Physics

Scientific paper

We have analyzed the correlation between the 27 days solar rotation as seen in F10.7 observations and in F peak electron density measurements. Using data (foF2) from ionosonde stations from years 1966-1991 in the northern and southern hemisphere (North hemisphere- Boulder, Millstone Hill, Juliusruh, Pruhonice, Irkutsk, Tokyo; South hemisphere - Argentine Island, Grahamstown, Cape Town, Canberra, Auckland, Tahiti) we have found that a delay between F107 measured at Ottawa and a particular ionosonde station increases almost linearly from the west to the east from appx. 0 to appx. 4 days. A north-south asymetry in the delay was found. We investigate this effect using numerical simulations by the FLIP model.

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