Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights
Observations made with the co-located Rayleigh lidar and MST radar systems at Aberystwyth (52.4°N, 4.1°W) in Wales and radiosondes from Valentia (51.9°N, 10.2°W) in Eire are used to investigate the changes in the vertical propagation of gravity waves during periods of 4 days in June 1995 and Feb...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1998-02-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/16/229/1998/angeo-16-229-1998.pdf |
| _version_ | 1818024217005785088 |
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| author | A. J. McDonald L. Thomas D. P. Wareing |
| author_facet | A. J. McDonald L. Thomas D. P. Wareing |
| author_sort | A. J. McDonald |
| collection | DOAJ |
| description | Observations made with the co-located
Rayleigh lidar and MST radar systems at Aberystwyth (52.4°N, 4.1°W) in Wales
and radiosondes from Valentia (51.9°N, 10.2°W) in Eire are used to investigate
the changes in the vertical propagation of gravity waves during periods of 4
days in June 1995 and February 1993. In each month, the lidar observations show
that the wave activity in the upper stratosphere and lower mesosphere changes
between two pairs of days. The radar and radiosonde measurements indicate that
mountain waves make no contribution to the changes in intensity. Instead, the
changes seem to arise largely from the presence or absence of long-period waves
with vertical wavelengths near 8 and 10 km in June and February, respectively.
The influence of such waves on the vertical wavenumber spectra is examined and
related to the evidence for convective instabilities provided by the temperature
profiles.<br><br><b>Key words. </b>Rayleigh lidar · MST radar systems ·
Radiosondes · Gravity waves |
| first_indexed | 2024-12-10T03:56:42Z |
| format | Article |
| id | doaj.art-3acd6668f6b04c15a71d23e9ca4f0628 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-10T03:56:42Z |
| publishDate | 1998-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-3acd6668f6b04c15a71d23e9ca4f06282022-12-22T02:03:05ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761998-02-011622923710.1007/s00585-998-0229-0Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heightsA. J. McDonald0L. Thomas1D. P. Wareing2Department of Physics, The University of Wales, Aberystwyth, Ceredigion, SY23 3BZ, UKDepartment of Physics, The University of Wales, Aberystwyth, Ceredigion, SY23 3BZ, UKDepartment of Physics, The University of Wales, Aberystwyth, Ceredigion, SY23 3BZ, UKObservations made with the co-located Rayleigh lidar and MST radar systems at Aberystwyth (52.4°N, 4.1°W) in Wales and radiosondes from Valentia (51.9°N, 10.2°W) in Eire are used to investigate the changes in the vertical propagation of gravity waves during periods of 4 days in June 1995 and February 1993. In each month, the lidar observations show that the wave activity in the upper stratosphere and lower mesosphere changes between two pairs of days. The radar and radiosonde measurements indicate that mountain waves make no contribution to the changes in intensity. Instead, the changes seem to arise largely from the presence or absence of long-period waves with vertical wavelengths near 8 and 10 km in June and February, respectively. The influence of such waves on the vertical wavenumber spectra is examined and related to the evidence for convective instabilities provided by the temperature profiles.<br><br><b>Key words. </b>Rayleigh lidar · MST radar systems · Radiosondes · Gravity waveshttps://www.ann-geophys.net/16/229/1998/angeo-16-229-1998.pdf |
| spellingShingle | A. J. McDonald L. Thomas D. P. Wareing Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights Annales Geophysicae |
| title | Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights |
| title_full | Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights |
| title_fullStr | Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights |
| title_full_unstemmed | Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights |
| title_short | Night-to-night changes in the characteristics of gravity waves at stratospheric and lower-mesospheric heights |
| title_sort | night to night changes in the characteristics of gravity waves at stratospheric and lower mesospheric heights |
| url | https://www.ann-geophys.net/16/229/1998/angeo-16-229-1998.pdf |
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