| Issue |
EPJ Web of Conferences
Volume 119, 2016
The 27th International Laser Radar Conference (ILRC 27)
|
|
|---|---|---|
| Article Number | 15002 | |
| Number of page(s) | 4 | |
| Section | Poster Session (Lidar Applications to Boundary Layer Studies) | |
| DOI | https://doi.org/10.1051/epjconf/201611915002 | |
| Published online | 07 June 2016 | |
https://doi.org/10.1051/epjconf/201611915002
Lidar Observations of Low-level Wind Reversals over the Gulf of Lion and Characterization of Their Impact on the Water Vapour Variability
1 Scuola di Ingegneria, Università degli Studi della Basilicata, Viale dell’Ateneo Lucano n. 10, 85100 Potenza – Italy,
2 Laboratoire Atmosphères, Milieux, Observations Spatiales, UMR 8190 CNRS &UPMC &UVSQ, Paris-France
3 Dipartimento di Fisica, Università di Roma “Sapienza”, Piazzale Aldo Moro, n. 2, 00100 Roma – Italy
4 Laboratoire d’Aérologie, UMR 5560 CNRS, Université de Toulouse, Toulouse, France
5 CNRM-GAME, UMR3589 Météo-France & CNRS, Toulouse, France
* Email: digirolamo@unibas.it
Published online: 7 June 2016
Water vapour measurements from a ground-based Raman lidar and an airborne differential absorption lidar, complemented by high resolution numerical simulations from two mesoscale models (Arome-WMED and MESO-NH), are considered to investigate transition events from Mistral/Tramontane to southerly marine flow taking place over the Gulf of Lion in Southern France in the time frame September-October 2012, during the Hydrological Cycle in the Mediterranean Experiment (HyMeX) Special Observation Period 1 (SOP1). Low-level wind reversals associated with these transitions are found to have a strong impact on water vapour transport, leading to a large variability of the water vapour vertical and horizontal distribution. The high spatial and temporal resolution of the lidar data allow to monitor the time evolution of the three-dimensional water vapour field during these transitions from predominantly northerly Mistral/Tramontane flow to a predominantly southerly flow, allowing to identify the quite sharp separation between these flows, which is also quite well captured by the mesoscale models.
© Owned by the authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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