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		<doi>10.5194/npg-2017-42</doi>
		<issn>1023-5809</issn>
		<citationkey>GuarnieriTsViHaEcMaGo:2017:CoStRe</citationkey>
		<title>A correlation study regarding the AE index and ACE solar wind data for Alfvénic intervals using wavelet decomposition and reconstruction</title>
		<year>2017</year>
		<month>Aug.</month>
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		<author>Guarnieri, Fernando L.,</author>
		<author>Tsurutani, Bruce T.,</author>
		<author>Vieira, Luis Eduardo Antunes,</author>
		<author>Hajra, Rajkumar,</author>
		<author>Echer, Ezequiel,</author>
		<author>Mannucci, Antony J.,</author>
		<author>Gonzalez Alarcon, Walter Demetrio,</author>
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		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Jet Propulsion Laboratory, California Institute of Technology</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Laboratoire de Physique et Chimie de l'Environement et de l'Espace</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Jet Propulsion Laboratory, California Institute of Technology</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>Fernando.Guarnieri@gmail.com</electronicmailaddress>
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		<electronicmailaddress>luis.vieira@inpe.br</electronicmailaddress>
		<electronicmailaddress></electronicmailaddress>
		<electronicmailaddress>ezequiel.echer@inpe.br</electronicmailaddress>
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		<electronicmailaddress>walter.gonzalez@inpe.br</electronicmailaddress>
		<journal>Nonlinear Processes in Geophysics Discussions</journal>
		<volume>42</volume>
		<pages>1-16</pages>
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		<abstract>The purpose of this study is to present a wavelet interactive filtering and reconstruction technique and apply this to the solar wind magnetic field components detected at the L1 Lagrange point ~0.01 AU upstream of the Earth. This filtered interplanetary magnetic field (IMF) data is fed into a model to calculate a time series which we call AE*. This model was adjusted assuming that magnetic reconnection associated with southward directed IMF Bz is the main mechanism transferring energy into the magnetosphere. The calculated AE* was compared to the observed AE index using cross correlation analysis. The results show correlations as high as 0.90. Empirical removal of the high-frequency, shortwavelength Alfvénic component in the IMF by wavelet decomposition is shown to dramatically improve the correlation between AE* and the observed AE index. It is envisioned that this AE* can be used as the main input for a model to forecast relativistic electrons in the Earth's outer radiation belts, which are delayed by ~1 to 2 days from intense AE events.</abstract>
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		<language>en</language>
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