caa a22 4500 445347058 CHVBK 20180317142832.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s11207-011-9845-z doi (NATIONALLICENCE)springer-10.1007/s11207-011-9845-z Grad-Shafranov Reconstruction of Magnetic Clouds: Overview and Improvements [Elektronische Daten] [A. Isavnin, E. Kilpua, H. Koskinen] The Grad-Shafranov reconstruction is a method of estimating the orientation (invariant axis) and cross section of magnetic flux ropes using the data from a single spacecraft. It can be applied to various magnetic structures such as magnetic clouds (MCs) and flux ropes embedded in the magnetopause and in the solar wind. We develop a number of improvements of this technique and show some examples of the reconstruction procedure of interplanetary coronal mass ejections (ICMEs) observed at 1AU by the STEREO, Wind, and ACE spacecraft during the minimum following Solar Cycle 23. The analysis is conducted not only for ideal localized ICME events but also for non-trivial cases of magnetic clouds in fast solar wind. The Grad-Shafranov reconstruction gives reasonable results for the sample events, although it possesses certain limitations, which need to be taken into account during the interpretation of the model results. Springer Science+Business Media B.V., 2011 Coronal mass ejections, interplanetary nationallicence Magnetic fields, interplanetary nationallicence Magnetic fields, models nationallicence Isavnin A. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland aut Kilpua E. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland aut Koskinen H. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland aut Solar Physics Springer Netherlands 273/1(2011-10-01), 205-219 0038-0938 273:1<205 2011 273 11207 https://doi.org/10.1007/s11207-011-9845-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9845-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Isavnin A. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland aut NATIONALLICENCE 700 1- Kilpua E. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland aut NATIONALLICENCE 700 1- Koskinen H. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 273/1(2011-10-01), 205-219 0038-0938 273:1<205 2011 273 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer