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EP: Fachverband Extraterrestrische Physik

EP 7: Poster Session Extraterrestrics

EP 7.7: Poster

Tuesday, March 31, 2009, 17:30–19:00, Foyer der Zahnklinik

A search for long-term variations of the F layer using EISCAT — •Renate Scherer¹, Mike Rietveld², Klaus Scherer³, Bernd Heber⁴, and Horst Fichtner³ — ¹EISCAT-CAWSES-Copernicus, 37191 Katlenburg-Lindau, Germany — ²EISCAT, Tromsø, Norway — ³Theoretische Physik Lehrstuhl IV, RUB, 44780 Bochum — ⁴Institut für Experimentelle und Angewandte Physik, CAU, 24118 Kiel

Some theoretical as well as experimental studies based on ionosonde data suggest that climate change can also affect the upper layer of the ionosphere. Unfortunately, thee are several problems and uncertainties in determining the layer heights from ionosonde data, such that a precise determination of the F-layer height is difficult. With the EISCAT radar the range s measured directly so that the height of the F-layer is obtained with much better precision. Because almost 20 years of observations exist, we will analyse the long-term behavior of the F-layer based on EISCAT data. We present here our first results based on the EISCAT observations during 2006.