A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system
A ground-based Rayleigh lidar has provided continuous observations of tropospheric water vapour profiles and cirrus cloud using a preliminary Raman channels setup on an existing Rayleigh lidar above La Reunion over the period 2002–2005. With this instrument, we performed a first measurement campaign...
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Copernicus Publications
2012-06-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | http://www.atmos-meas-tech.net/5/1333/2012/amt-5-1333-2012.pdf |
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doaj-27a07345b2b444618fd9daf4f76bdd7d2020-11-25T00:11:07ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482012-06-01561333134810.5194/amt-5-1333-2012A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future systemC. HoareauP. KeckhutJ.-L. BarayL. RobertY. CourcouxJ. PorteneuveH. VömelB. MorelA ground-based Rayleigh lidar has provided continuous observations of tropospheric water vapour profiles and cirrus cloud using a preliminary Raman channels setup on an existing Rayleigh lidar above La Reunion over the period 2002–2005. With this instrument, we performed a first measurement campaign of 350 independent water vapour profiles. A statistical study of the distribution of water vapour profiles is presented and some investigations concerning the calibration are discussed. Analysis regarding the cirrus clouds is presented and a classification has been performed showing 3 distinct classes. Based on these results, the characteristics and the design of a future lidar system, to be implemented at the new Reunion Island altitude observatory (2200 m) for long-term monitoring, is presented and numerical simulations of system performance have been realised to compare both instruments.http://www.atmos-meas-tech.net/5/1333/2012/amt-5-1333-2012.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
C. Hoareau P. Keckhut J.-L. Baray L. Robert Y. Courcoux J. Porteneuve H. Vömel B. Morel |
| spellingShingle |
C. Hoareau P. Keckhut J.-L. Baray L. Robert Y. Courcoux J. Porteneuve H. Vömel B. Morel A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system Atmospheric Measurement Techniques |
| author_facet |
C. Hoareau P. Keckhut J.-L. Baray L. Robert Y. Courcoux J. Porteneuve H. Vömel B. Morel |
| author_sort |
C. Hoareau |
| title |
A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system |
| title_short |
A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system |
| title_full |
A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system |
| title_fullStr |
A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system |
| title_full_unstemmed |
A Raman lidar at La Reunion (20.8° S, 55.5° E) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system |
| title_sort |
raman lidar at la reunion (20.8° s, 55.5° e) for monitoring water vapour and cirrus distributions in the subtropical upper troposphere: preliminary analyses and description of a future system |
| publisher |
Copernicus Publications |
| series |
Atmospheric Measurement Techniques |
| issn |
1867-1381 1867-8548 |
| publishDate |
2012-06-01 |
| description |
A ground-based Rayleigh lidar has provided continuous observations of tropospheric water vapour profiles and cirrus cloud using a preliminary Raman channels setup on an existing Rayleigh lidar above La Reunion over the period 2002–2005. With this instrument, we performed a first measurement campaign of 350 independent water vapour profiles. A statistical study of the distribution of water vapour profiles is presented and some investigations concerning the calibration are discussed. Analysis regarding the cirrus clouds is presented and a classification has been performed showing 3 distinct classes. Based on these results, the characteristics and the design of a future lidar system, to be implemented at the new Reunion Island altitude observatory (2200 m) for long-term monitoring, is presented and numerical simulations of system performance have been realised to compare both instruments. |
| url |
http://www.atmos-meas-tech.net/5/1333/2012/amt-5-1333-2012.pdf |
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