Two-year operation of the lidar 1200: from fine-scale tropospheric structures to lower stratospheric water vapor detection

Hélène Vérèmes (1, 2) , Guillaume Payen (1) , Philippe Keckhut (3) , Valentin Duflot (2, 1) , Jean-Luc Baray (4) , Jean-Pierre Cammas (1, 2) , Jimmy Leclair de Bellevue (2) , Françoise Posny (2) , Stéphanie Evan (2) , Jean-Marc Metzger (1) , Nicolas Marquestaut (1) , Franck Gabarrot (1) , Susanne Meier (5) , Holger Vömel (6) , Ruud Dirksen (5)

1 OSU-Réunion - Observatoire des Sciences de l'Univers de La Réunion
2 LACy - Laboratoire de l'Atmosphère et des Cyclones
3 STRATO - LATMOS
4 LaMP - Laboratoire de Météorologie Physique
5 MOL-RAO - Lindenberg Meteorological Observatory - Richard Assmann Observatory
6 EOL - Earth Observing Laboratory [Boulder]

The 2-year lidar water vapor database (November 2013 - October 2015) of the Maïdo Observatory (Reunion Island / 21°S,55.5°E) is now calibrated. The performance of the lidar to provide accurate vertical structures are shown to be good. The ability of measuring quantities of a few ppmv in the lower stratosphere is demonstrated up to 22 km (based on Cryogenic Frostpoint Hygrometer sondes/lidar profiles comparisons) for an integration time period of 48 hours and a vertical resolution of 1.3 km.

Domains: Atmospheric and Oceanic Physics [physics.ao-ph]; Ocean, Atmosphere; Meteorology

Hélène Vérèmes, Guillaume Payen, Philippe Keckhut, Valentin Duflot, Jean-Luc Baray, et al.. Two-year operation of the lidar 1200: from fine-scale tropospheric structures to lower stratospheric water vapor detection. EPJ Web of Conferences, 2018, The 28th International Laser Radar Conference (ILRC 28), Bucharest 2017, 176, pp.05015. ⟨10.1051/epjconf/201817605015⟩. ⟨insu-01569600⟩