dc.contributor.author |
Mbatha, N
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dc.contributor.author |
Sivakumar, V
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dc.contributor.author |
Malinga, SB
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dc.contributor.author |
Bencherif, H
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dc.contributor.author |
Pillay, SR
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dc.date.accessioned |
2009-11-17T09:54:38Z |
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dc.date.available |
2009-11-17T09:54:38Z |
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dc.date.issued |
2010 |
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dc.identifier.citation |
Mbatha, N, Venkataraman, S, Malinga, SB et al. 2010. Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar measurements. Atmospheric Chemistry and Physics Duscussions, Vol. 10, pp 3397–3404 |
en |
dc.identifier.uri |
http://hdl.handle.net/10204/3737
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dc.identifier.uri |
http://www.atmos-chem-phys.net/10/3397/2010/acp-10-3397-2010.pdf
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en |
dc.description |
This work is distributed under
the Creative Commons Attribution 3.0 License. |
en |
dc.description.abstract |
The occurrence of sudden stratospheric warming (SSW) excites disturbances in the mesosphere-lower thermospheric (MLT) wind and temperature. Here, researchers have examined the high frequency (HF) radar wind data from the South African National Antarctic Expedition, SANAE (72° S, 5 3° W), a radar which is part of the Super Dual Auroral Radar Network (SuperDARN). Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) on board the Thermosphere-Ionosphere-Mesosphere-Energetics and Dynamics (TIMED) satellite temperature data and National Centre for Environmental Prediction (NCEP) temperature and wind data were use to investigate the dynamical 10 effects of the unprecedented September 2002 SSW in the Antarctica stratosphere and MLT. The mean zonal wind (from SANAE HF radar) at the MLT shows reversal in approximately 7 days before the reversal at 10 hPa (from NCEP). This indicates that there was a downwards propagation of circulation disturbance. Westerly zonal winds dominate the winter MLT, but during the 2002 winter there were many periods of westward 15 winds observed compared to other years. The dynamic spectrums of both meridional and zonal winds show presence of planetary waves (of ~14-day period) before the occurrence of the SSW. The SABER vertical temperature profiles indicated the cooling of the MLT region before the SSW event. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Copernicus Publications & European Geosciences Union |
en |
dc.subject |
Stratosphere warming |
en |
dc.subject |
Mesosphere |
en |
dc.subject |
Thermosphere |
en |
dc.subject |
High frequency radar |
en |
dc.subject |
Satellite measurements |
en |
dc.subject |
Mesosphere-lower thermospheric |
en |
dc.subject |
Temperature |
en |
dc.subject |
Atmospheric chemistry |
en |
dc.subject |
Physics |
en |
dc.subject |
Super dual auroral radar network |
en |
dc.subject |
South African National Antarctic Expedition |
en |
dc.subject |
Broadband Emission Radiometry |
en |
dc.subject |
SABER |
en |
dc.title |
Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar - [Article] |
en |
dc.type |
Article |
en |
dc.identifier.apacitation |
Mbatha, N., Sivakumar, V., Malinga, S., Bencherif, H., & Pillay, S. (2010). Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar - [Article]. http://hdl.handle.net/10204/3737 |
en_ZA |
dc.identifier.chicagocitation |
Mbatha, N, V Sivakumar, SB Malinga, H Bencherif, and SR Pillay "Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar - [Article]." (2010) http://hdl.handle.net/10204/3737 |
en_ZA |
dc.identifier.vancouvercitation |
Mbatha N, Sivakumar V, Malinga S, Bencherif H, Pillay S. Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar - [Article]. 2010; http://hdl.handle.net/10204/3737. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Mbatha, N
AU - Sivakumar, V
AU - Malinga, SB
AU - Bencherif, H
AU - Pillay, SR
AB - The occurrence of sudden stratospheric warming (SSW) excites disturbances in the mesosphere-lower thermospheric (MLT) wind and temperature. Here, researchers have examined the high frequency (HF) radar wind data from the South African National Antarctic Expedition, SANAE (72° S, 5 3° W), a radar which is part of the Super Dual Auroral Radar Network (SuperDARN). Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) on board the Thermosphere-Ionosphere-Mesosphere-Energetics and Dynamics (TIMED) satellite temperature data and National Centre for Environmental Prediction (NCEP) temperature and wind data were use to investigate the dynamical 10 effects of the unprecedented September 2002 SSW in the Antarctica stratosphere and MLT. The mean zonal wind (from SANAE HF radar) at the MLT shows reversal in approximately 7 days before the reversal at 10 hPa (from NCEP). This indicates that there was a downwards propagation of circulation disturbance. Westerly zonal winds dominate the winter MLT, but during the 2002 winter there were many periods of westward 15 winds observed compared to other years. The dynamic spectrums of both meridional and zonal winds show presence of planetary waves (of ~14-day period) before the occurrence of the SSW. The SABER vertical temperature profiles indicated the cooling of the MLT region before the SSW event.
DA - 2010
DB - ResearchSpace
DP - CSIR
KW - Stratosphere warming
KW - Mesosphere
KW - Thermosphere
KW - High frequency radar
KW - Satellite measurements
KW - Mesosphere-lower thermospheric
KW - Temperature
KW - Atmospheric chemistry
KW - Physics
KW - Super dual auroral radar network
KW - South African National Antarctic Expedition
KW - Broadband Emission Radiometry
KW - SABER
LK - https://researchspace.csir.co.za
PY - 2010
T1 - Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar - [Article]
TI - Study on the impact of sudden stratosphere warming in the upper mesosphere-lower thermosphere regions using satellite and HF radar - [Article]
UR - http://hdl.handle.net/10204/3737
ER -
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en_ZA |