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Abstract:

Bursts of strong day-to-day variations in airglow brightness and temperature for the mesopause region that last one or a few nights have frequently been observed at El Leoncito (LEO; 31.8°S 69.2°W), since 1997. After the start of the operation of the meteor wind radar at Cachoeira Paulista (CAP; 22.7°S 45.0°W, about 2600 km further NNE) in March 1999, a number of the strongest airglow events at LEO were found to be followed, 1-3 days later, by negative (westward) zonal wind excursions of about - 30 m/s that seem to be related. Meridional wind disturbances are absent or only weak. The zonal wind perturbation at CAP closely matches the altitude range defined by the airglow emission at LEO, i.e. an OH emission event corresponds to a lower-altitude wind signature, and an O2 emission event, to one at a higher altitude. The strong differences in seasonal occurrence patterns of airglow bursts at LEO observed earlier (with O2 bursts peaking in April, and OH bursts, in June) are confirmed by the more recent data presented here. Most of the observed features of the two-site events could be explained by anticyclonic vortices (with 2000 km diameter) propagating zonally with the eastward background wind. International collaborations like the Global Airglow Transition Detection and Tracking (GATDAT) campaign are expected to provide the information required to further the understanding of these phenomena. © 2005 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
Autor:Scheer, J.; Reisin, E.R.; Batista, P.P.; Clemesha, B.R.; Takahashi, H.
Filiación:Inst. de Astron./Fis. del Espacio, CONICET, Suc. 28, 1428 Buenos Aires, Argentina
Inst. Nac. de Pesquisas Espaciais, INPE, São José dos Campos, 122201 Sao Paulo, Brazil
Palabras clave:Airglow; Atmospheric dynamics; Mesopause region; Meteor radar; Solitons; Winds; Climate change; Meteor impacts; Meteorological radar; Meteorology; Radar systems; Storms; Temperature distribution; Anticyclones; Global airglow transition detection and tracking (GATDT); Meteor wind radar; Wind perturbation; Wind effects; airglow; atmospheric dynamics; mesopause; zonal wind; Panthera
Año:2005
Volumen:67
Número:6
Página de inicio:611
Página de fin:621
DOI: http://dx.doi.org/10.1016/j.jastp.2004.12.007
Título revista:Journal of Atmospheric and Solar-Terrestrial Physics
Título revista abreviado:J. Atmos. Sol.-Terr. Phys.
ISSN:13646826
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v67_n6_p611_Scheer

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Citas:

---------- APA ----------
Scheer, J., Reisin, E.R., Batista, P.P., Clemesha, B.R. & Takahashi, H. (2005) . Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart. Journal of Atmospheric and Solar-Terrestrial Physics, 67(6), 611-621.
http://dx.doi.org/10.1016/j.jastp.2004.12.007
---------- CHICAGO ----------
Scheer, J., Reisin, E.R., Batista, P.P., Clemesha, B.R., Takahashi, H. "Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart" . Journal of Atmospheric and Solar-Terrestrial Physics 67, no. 6 (2005) : 611-621.
http://dx.doi.org/10.1016/j.jastp.2004.12.007
---------- MLA ----------
Scheer, J., Reisin, E.R., Batista, P.P., Clemesha, B.R., Takahashi, H. "Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart" . Journal of Atmospheric and Solar-Terrestrial Physics, vol. 67, no. 6, 2005, pp. 611-621.
http://dx.doi.org/10.1016/j.jastp.2004.12.007
---------- VANCOUVER ----------
Scheer, J., Reisin, E.R., Batista, P.P., Clemesha, B.R., Takahashi, H. Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart. J. Atmos. Sol.-Terr. Phys. 2005;67(6):611-621.
http://dx.doi.org/10.1016/j.jastp.2004.12.007