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		<citationkey>SouzaBatiAbduCost:2015:ThNeWi</citationkey>
		<title>Thermospheric neutral wind role on the equatorial and low-latitude ionosphere during conjugate point experiment campaign</title>
		<year>2015</year>
		<secondarytype>PRE CI</secondarytype>
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		<author>Souza, Jonas Rodrigues de,</author>
		<author>Batista, Inez Staciarini,</author>
		<author>Abdu, Mangalathayil Ali,</author>
		<author>Costa, Renata Guimarães Donatelli Figueiredo,</author>
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		<group>DAE-CEA-INPE-MCTI-GOV-BR</group>
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		<group>DAE-CEA-INPE-MCTI-GOV-BR</group>
		<group>DAE-CEA-INPE-MCTI-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>jonas.souza@inpe.br</electronicmailaddress>
		<electronicmailaddress>inez.batista@inpe.br</electronicmailaddress>
		<electronicmailaddress>ma.abdu@inpe.br</electronicmailaddress>
		<conferencename>International Congress of the Brazilian Geophysical Society, 14</conferencename>
		<conferencelocation>Rio de Janeiro, RJ</conferencelocation>
		<date>3-6 Aug.</date>
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		<abstract>The thermospheric neutral wind plays important control in the temporal and spatial ionospheric plasma distribution at equatorial and low latitude sectors. For example, it is responsible for the F3 layer formation and for the asymmetry in the equatorial ionization anomaly crests. In this work, we have investigated the effects of the neutral winds on both E and F region over the Brazilian sector during one day, October 10, 2002, of Conjugate Point Experimental (COPEX) campaign. To calculate the ionospheric response to wind change the Sheffield University Plasmasphere Ionosphere Model at INPE (SUPIM-INPE) was used, in which the winds from two different versions of the Horizontal Wind Models (HWM93 and HWM07) were analyzed. As expected, the model results have not shown wind effects in the control of the plasma distribution near E region peak for equatorial and low latitude sectors. On the other hand, the F region variations due to the winds are complex and involve non-linear processes. Some changes in foF2 in response to wind are seen after ~3 hours. There is evidence that, for the day October 10, 2002, the lifetime of the equatorial ionization anomaly crests after midnight was significantly increased due to convergent winds near the conjugates points. The origin of such winds may be from the equatorial midnight temperature maximum (MTM) phenomenon. Equatorward wind contributes to increase the poleward expansion of equatorial ionization crests.</abstract>
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