%0 Journal Article %@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S} %@nexthigherunit 8JMKD3MGPCW/3ETL868 %@resumeid 8JMKD3MGP5W/3C9JGKH %@resumeid 8JMKD3MGP5W/3C9JJ3H %@archivingpolicy denypublisher denyfinaldraft24 %@usergroup administrator %@usergroup banon %@usergroup rosemary %@usergroup simone %3 gravity waves.pdf %X We have used the technique suggested by Hocking [Hocking, W. A new approach to momentum flux determinations using SKiYMET meteor radars. Ann. Geophys. 23, 2005.] to derive short period wind variances in the 80-100 km region from meteor radar data. We find that these fluctuating winds, assumed to correspond to gravity waves and turbulence, are closely correlated with the vertical shear of the horizontal tidal winds. This close correlation suggests that in situ wind shear may be a major source of gravity waves and turbulence in the MLT. If this is the case, gravity waves generated in the troposphere and propagating up to the MLT region, generally assumed to constitute an important influence on the climatology of the region, may be a less important source of energy and momentum in the 80-100 kin region than has been hitherto believed. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved. %N 9 %T Gravity waves and wind-shear in the MLT at 23 S %@secondarytype PRE PI %K Gravity waves, AERONOMY, gravity waves, MLT, winds. %@visibility shown %@group DAE-CEA-INPE-MCT-BR %@group DAE-CEA-INPE-MCT-BR %@secondarykey INPE--PRE/ %@issn 0273-1177 %2 sid.inpe.br/mtc-m17@80/2007/06.19.13.48.01 %@affiliation Instituto Nacional de Pesquisas Espaciais (INPE) %@affiliation Instituto Nacional de Pesquisas Espaciais (INPE) %B Advances in Space Research %P 1471-1476 %4 sid.inpe.br/mtc-m17@80/2007/06.19.13.48 %D 2008 %V 41 %@doi 10.1016/j.asr.2007.03.085 %A Clemesha, Barclay Robert, %A Batista, Paulo Prado, %@dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX. %@area CEA