Skip to Main content Skip to Navigation
New interface
Journal articles

Variability and evolution of the midlatitude stratospheric aerosol budget from 22 years of ground-based lidar and satellite observations

Abstract : The article presents new high-quality continuous stratospheric aerosol observations spanning 1994–2015 at the French Observatoire de Haute-Provence (OHP, 44° N, 6° E) obtained by two independent regularly-maintained lidar systems. Lidar series are compared with global-coverage observations by Stratospheric Aerosol and Gas Experiment (SAGE II), Global Ozone Monitoring by Occultation of Stars (GOMOS), Optical Spectrograph and InfraRed Imaging System (OSIRIS), Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) and Ozone Mapping Profiling Suite (OMPS) satellite instruments, altogether covering the time span of OHP lidar measurements. Local OHP and zonal-mean satellite series of stratospheric aerosol optical depth are in excellent agreement, allowing for accurate characterization of stratospheric aerosol evolution and variability at Northern mid-latitudes during the post-Pinatubo era. The combination of local and global observations is used for careful separation between volcanically-perturbed and quiescent periods. While the volcanic signatures dominate the stratospheric aerosol record, the background aerosol abundance is found to be modulated remotely by poleward transport of convectively-cleansed air from the deep tropics and aerosol-laden air from the Asian monsoon region. The annual cycle of background aerosol at mid-latitudes, featuring a minimum during late spring and a maximum during late summer, correlates with that of water vapour from Microwave Limb Sounder (MLS). Observations covering two volcanically-quiescent periods over the last two decades provide indication of a growth in the non-volcanic component of stratospheric aerosol. A statistically-significant factor of two increase of non-volcanic aerosol since 1998, seasonally restricted to late-summer and fall, is associated with the influence of the Asian monsoon and growing pollution therein.
Complete list of metadata

Cited literature [62 references]  Display  Hide  Download
Contributor : Catherine Cardon Connect in order to contact the contributor
Submitted on : Wednesday, February 8, 2017 - 9:33:52 AM
Last modification on : Friday, October 14, 2022 - 9:06:09 AM
Long-term archiving on: : Tuesday, May 9, 2017 - 12:20:21 PM


Publisher files allowed on an open archive



Sergey Khaykin, Sophie Godin-Beekmann, Philippe Keckhut, Alain Hauchecorne, Julien Jumelet, et al.. Variability and evolution of the midlatitude stratospheric aerosol budget from 22 years of ground-based lidar and satellite observations. Atmospheric Chemistry and Physics, 2017, 17 (3), pp.1829-1845. ⟨10.5194/acp-17-1829-2017⟩. ⟨insu-01373472⟩



Record views


Files downloads