Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart

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....

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Autores principales: Scheer, J., Reisin, E.R., Batista, P.P., Clemesha, B.R., Takahashi, H.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13646826_v67_n6_p611_Scheer
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_13646826_v67_n6_p611_Scheer2023-10-03T16:11:12Z Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart Scheer, J. Reisin, E.R. Batista, P.P. Clemesha, B.R. Takahashi, H. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13646826_v67_n6_p611_Scheer
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
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
topic_facet 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
description 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.
format JOUR
author Scheer, J.
Reisin, E.R.
Batista, P.P.
Clemesha, B.R.
Takahashi, H.
author_facet Scheer, J.
Reisin, E.R.
Batista, P.P.
Clemesha, B.R.
Takahashi, H.
author_sort Scheer, J.
title Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
title_short Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
title_full Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
title_fullStr Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
title_full_unstemmed Detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
title_sort detection of meteor radar wind signatures related to strong short-duration day-to-day airglow transitions at sites 2600 km apart
url http://hdl.handle.net/20.500.12110/paper_13646826_v67_n6_p611_Scheer
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