Institution: | 1.Observatório Nacional, Rua General José Cristino, 77, S?o Cristóv?o, Rio de Janeiro, 20921-400, Brazil ;2.GFZ German Research Centre for Geosciences, Potsdam, Germany ;3.Faculty of Science, University of Potsdam, Potsdam, Germany ;4.Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA ;5.National Center for Environmental Information, NOAA, Boulder, CO, USA ;6.International Center for Space Weather Science and Education ICSWSE, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395, Japan ;7.Kyushu Institute of Technology, 680-4, Kawazu, Iizuka, Fukuoka, 820-8502, Japan ;8.Indian Institute of Geomagnetism, Navi Mumbai, India ; |