Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study
For the first time, climatology of the middle atmosphere thermal structure is presented, based on 14 years of LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) temperature measurements. The data is collected over a southern sub-tropical site, Reunion Island (20.8° S; 55.5° E), for the height...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2011-04-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/29/649/2011/angeo-29-649-2011.pdf |
| _version_ | 1819144094694244352 |
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| author | V. Sivakumar V. Sivakumar V. Sivakumar V. Sivakumar P. Vishnu Prasanth P. Vishnu Prasanth P. Kishore H. Bencherif P. Keckhut |
| author_facet | V. Sivakumar V. Sivakumar V. Sivakumar V. Sivakumar P. Vishnu Prasanth P. Vishnu Prasanth P. Kishore H. Bencherif P. Keckhut |
| author_sort | V. Sivakumar |
| collection | DOAJ |
| description | For the first time, climatology of the middle atmosphere thermal structure
is presented, based on 14 years of LIDAR and satellite (HALOE, SABER, CHAMP
and COSMIC) temperature measurements. The data is collected over a southern
sub-tropical site, Reunion Island (20.8° S; 55.5° E), for the height
range between 30 and 60 km. The overall monthly mean temperature shows a
maximum of 265–270 K at the stratopause height region from ~44–52 km
and peaks during the months of March and November. Furthermore, the
temperature profiles are compared with different satellite datasets (HALOE,
CHAMP, COSMIC and SABER) and the results are found to be in reasonable
agreement with each other, although a relative difference in temperature of
± 5 to 6 K is noticed. In comparison, LIDAR shows higher/lower
temperatures for the lower mesosphere/upper stratosphere height region. The
differences in temperature measured by the LIDAR and satellite measurements
are analogous with previous results available elsewhere. Long-term
temperature measurements are used to further study seasonal oscillations,
especially annual, semi-annual and quasi-biennial oscillations. In
comparison with SAO, the measured spectral amplitudes of AO shows dominant
amplitudes in both the upper stratosphere and lower mesosphere height
regions. Using LIDAR and the other satellite measurements, the
quasi-biennial oscillation was found to be approximately 26 months. The
spectral amplitudes are comparable to the results reported earlier by other
researchers. |
| first_indexed | 2024-12-22T12:36:40Z |
| format | Article |
| id | doaj.art-b9d8b482fd874835ad8226b2b8f6830b |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-22T12:36:40Z |
| publishDate | 2011-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-b9d8b482fd874835ad8226b2b8f6830b2022-12-21T18:25:34ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762011-04-012964966210.5194/angeo-29-649-2011Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison studyV. Sivakumar0V. Sivakumar1V. Sivakumar2V. Sivakumar3P. Vishnu Prasanth4P. Vishnu Prasanth5P. Kishore6H. Bencherif7P. Keckhut8Laboratoire de l'Atmosphère et des Cyclones (LACy), UMR 8105, INSU/CNRS, Université de La Reunion, Reunion Island, FranceNational Laser Centre (NLC), Council for Scientific and Industrial Research (CSIR), P.O. Box 395, Pretoria 0001, South AfricaDepartment of Geography, Geoinformatics and Meteorology, University of Pretoria, Lynwood Road, Pretoria 0002, South AfricaSchool of Physics, University of KwaZulu Natal, Durban 4000, South AfricaLaboratoire de l'Atmosphère et des Cyclones (LACy), UMR 8105, INSU/CNRS, Université de La Reunion, Reunion Island, FranceSree Vidyanikethan Engineering College, Sree Sainath nagar, Tirupathi – 517 102, Andhra Pradesh, IndiaDepartment of Earth System Science, University of California, Irvine, CA 92697, USALaboratoire de l'Atmosphère et des Cyclones (LACy), UMR 8105, INSU/CNRS, Université de La Reunion, Reunion Island, FranceLaboratoire Atmosphères Milieux Observations Spatiales (LATMOS), IPSL (UMR 8190), 11, Boulevard d'Alember, 78280, Guyancourt, FranceFor the first time, climatology of the middle atmosphere thermal structure is presented, based on 14 years of LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) temperature measurements. The data is collected over a southern sub-tropical site, Reunion Island (20.8° S; 55.5° E), for the height range between 30 and 60 km. The overall monthly mean temperature shows a maximum of 265–270 K at the stratopause height region from ~44–52 km and peaks during the months of March and November. Furthermore, the temperature profiles are compared with different satellite datasets (HALOE, CHAMP, COSMIC and SABER) and the results are found to be in reasonable agreement with each other, although a relative difference in temperature of ± 5 to 6 K is noticed. In comparison, LIDAR shows higher/lower temperatures for the lower mesosphere/upper stratosphere height region. The differences in temperature measured by the LIDAR and satellite measurements are analogous with previous results available elsewhere. Long-term temperature measurements are used to further study seasonal oscillations, especially annual, semi-annual and quasi-biennial oscillations. In comparison with SAO, the measured spectral amplitudes of AO shows dominant amplitudes in both the upper stratosphere and lower mesosphere height regions. Using LIDAR and the other satellite measurements, the quasi-biennial oscillation was found to be approximately 26 months. The spectral amplitudes are comparable to the results reported earlier by other researchers.https://www.ann-geophys.net/29/649/2011/angeo-29-649-2011.pdf |
| spellingShingle | V. Sivakumar V. Sivakumar V. Sivakumar V. Sivakumar P. Vishnu Prasanth P. Vishnu Prasanth P. Kishore H. Bencherif P. Keckhut Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study Annales Geophysicae |
| title | Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study |
| title_full | Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study |
| title_fullStr | Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study |
| title_full_unstemmed | Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study |
| title_short | Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study |
| title_sort | rayleigh lidar and satellite haloe saber champ and cosmic measurements of stratosphere mesosphere temperature over a southern sub tropical site reunion 20 8° s 55 5° e climatology and comparison study |
| url | https://www.ann-geophys.net/29/649/2011/angeo-29-649-2011.pdf |
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