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STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 New Observational Windows on Flares and CMEs --- On Chinese Spectral Radioheliograph in cm-dm Wavelength Range Yan Yihua Key Lab of Solar Activity, National Astronomicla Observatories, Chinese Academy of Sciences The radio observations with high temporal, spatial and spectral resolutions simultaneously will open new windows on flares and CMEs. The FASR and Chinese Spectral Radioheliograph (CSRH) aim at these goals and will provide first images of solar flares over an extended spectral range. The CSRH dm-wave and cm-wave arrays I and II are under construction and due to operate in 2011 and 2013 respectively. We discuss the scientific objectives of CSRH.
STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Range Imaging Results from Polar Mesosphere Summer Echoes Zecha Marius 1 , Hoffmann Peter 1 , Rapp Markus 1 , Chen Jenn-Shyong 2 1 Leibniz Institute of Atmospheric Physics at the Rostock University, Kühlungsborn, 2 Department of Computer and Communication Engineering, Chienkuo Technology University, Taiwan The range resolution of pulsed radars is usually limited by the transmitting pulse length and the sampling time. The so-called range imaging (RIM) has been developed to reduce these limitations. To apply this method the radar operates alternately over a set of distinct frequencies. Then the phase differences of the receiving signals can be used for optimization methods to generate high-resolution maps of reflections as function of range insight the pulse length. The technique has been implemented on the ALWIN VHF radar in Andenes (69°) and the OSWIN VHF radar in Kühlungsborn (54°N). Here we present results of the RIM method from measurements in polar mesosphere summer echoes – PMSE. These strong radar echoes are linked to ice particle clouds in the mesopause region. The dynamic of the PMSE can be reflected very well by RIM. The movement of PMSE and the edges of the extension can be tracked with a high altitude resolution. Comparisons between simultaneous measurements by RIM and by standard radar techniques demonstrate the advantages of RIM. Wave structures can be identified with RIM whereas they are not detectable with the lesser resolution of the standard measurements. Gravity wave parameter associated with these echo variations are estimated using the simultaneous measured velocity field.
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scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

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