Satellite and ground-based observations of a large-scale electron precipitation event

• Published in: 2011 XXXth URSI General Assembly and Scientific Symposium
• Main Authors: Gamble, Rory J., Rodger, Craig J., Clilverd, Mark A., Thomson, Neil R., Ulich, Thomas, Parrot, Michel, Sauvaud, Jean-André, Berthelier, Jean-Jacques
• Other Authors: Department of Physics Dunedin, University of Otago Dunedin, Nouvelle-Zélande, British Antarctic Survey (BAS), Natural Environment Research Council (NERC), Sodankylä Geophysical Observatory, University of Oulu, Laboratoire de physique et chimie de l'environnement (LPCE), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, HELIOS - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2011
• Subjects: 6 Laboratoire Atmosphères; Milieux; Observations Spatiales; IPSL; CNRS; St-Maur-des-Fossés France (jean- jacques; [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]; [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]; [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]; Sodankylä
• Online Access: https://hal.archives-ouvertes.fr/hal-00652986; https://hal.archives-ouvertes.fr/hal-00652986/document; https://hal.archives-ouvertes.fr/hal-00652986/file/Parrot.pdf; https://doi.org/10.1109/URSIGASS.2011.6051151

International audience Energetic electron precipitation into the atmosphere is determined using subionospheric VLF measurements, DEMETER satellite electron spectra, and modelling techniques for a 24-hour period during the January 2005 geomagnetic storms. Large-scale observations using VLF measurements of multiple subionospheric paths to Sodankylä, Finland, are combined with detailed in situ measurements from the DEMETER satellite to determine the spatial extent, flux, and energy distribution of the precipitation. By providing a better picture of both the intensity and size of the precipitation region, we obtain a more complete picture of the net impact that such an event has on the atmosphere.