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STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Reconstruction of solar photospheric and heliospheric magnetic field since 1700 with a physical model Jiang Jie , Cameron Robert , Schmitt Dieter , Schuessler Manfred Max Planck Institute for Solar System Research Based upon the group sunspot number and the previous studies about the features of the sunspot emergence including the area, latitude, longitude and tilt angle, we reconstruct the solar photospheric and heliospheric magnetic field since 1700 with the coupled solar surface flux transport model and current sheet source surface extrapolation. The open flux results from our model agree well with geomagnetic-based reconstruction. We also get the temporal evolution of the heliospheric current sheet tilt angle, which is important for cosmic ray modulation.
STP12 Abstracts Berlin, 12 - 16 July 2010 SCOSTEP Symposium 2010 Comparative observations of gravity waves in MLT region using the Kunming MF radar and Meteor radar Jinsong Chen 1 , Jiyao xu 2 , Jian wu 3 1 Graduate University of Chinese Academy of Sciences, Beijing, China, 2 Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing, China, 3 China Research Institute of Radiowave Propagation, Qingdao, China An all-sky meteor radar and a MF radar had been installed at Kunming station (25.1°N, 102.7°E) since July 2008, and begun routine observations subsequently after a short test operation. The data from these two radars in November and December 2009 have been used to analyze gravity wave activities in mesosphere and lower thermosphere (MLT) over Kunming. For MF radar the wind variances of gravity waves during 12-180-min periods between 80-100 km are used to calculate frequency spectra of wind velocity, then estimate variances , and
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scostep 2010 (stp12) - Leibniz-Institut für Atmosphärenphysik an der ...

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